Selections from Kreigh Tomaszewski's
Rock and Mineral Collection
in Numerical Order
4250 - 4499

Selections from Kreigh Tomaszewski's
Rock and Mineral Collection

Yes, there are specimens hidden in this list, but you may have to scroll down to find them.
Principal Mineral(s) Formula Locality When Collected Matrix Secondary Mineral(s) Comments Reference # Hardness Streak Specific Gravity Crystal Form(s)

Yingjiangite Formula /Images/picture.jpg Kladska, Marianske Lazne, Cheb District, Karlovy Vary Region, Czech Republic acquired 2025 Matrix Torbernite From the collection of Tony Nickischer (Excalibur Minerals).
This exceptionally rare uranium phosphate occurs as minute golden yellow aggregates sparsely scattered on matrix, some with minor torbernite. Weakly fluorescent and XRD-confirmed material, this from the second world occurrence for the species. Only a few available, small fragment in a capsule, matrix specimens from 0.8cm to 2.4cm, and one 7x5cm sample. Rare stuff!
4250 Hardness Streak Specific Gravity Crystal Form(s)

Schulenbergite Formula /Images/picture.jpg La Platosa Mine (Mina Platosa), Bermejillo, Mapimí Municipality, Durango, Mexico acquired 2025 Matrix Anglesite From the collection of Tony Nickischer (Excalibur Minerals).
From the 2001 discovery, superb, pale blue micro balls of schulenbergite well-scattered on matrix, many with minor admixed serpierite, glassy anglesite and possibly other phases. Attractive material with good micro potential, specimens from about 3cm to 6cm across.
4251 Hardness Streak Specific Gravity Crystal Form(s)

Mascagnite Formula /Images/picture.jpg Ravat village, Yagnob River, Zeravshan Range, Sughd, Tajikistan acquired 2025 Matrix Secondary Mineral(s) From the collection of Tony Nickischer (Excalibur Minerals).
A very fine crystal "worm" of mascagnite without matrix. This silky white 3.5cm long crystal is tightly curved and somewhat chatoyant. Amazingly well formed for the species. Only three on hand. Very neat stuff and quite unique! Russian label list locality as Tian-Shan, Tajikistan<, USSR.
4252 Hardness Streak Specific Gravity Crystal Form(s)

Corderoite Formula /Images/picture.jpg McDermitt Mine (Cordero Mine), Opalite Mining District, Humboldt County, Nevada acquired 2025 Opal Montmorillonite, Cinnabar A Type Locality specimen for Corderoite. From the collection of Tony Nickischer (Excalibur Minerals).
Pale pinkish orange inclusions of corderoite in opalite and occasionally as masses lightly scattered in crusty aggregates with montmorillonite and possibly minor cinnabar. Type locality material but rather impure, admixed specimens, sizes from 2.5cm to 6cm. Ex-Cureton from Dr. Gene Foord, the senior author for the species.
4253 Hardness Streak Specific Gravity Crystal Form(s)

Halite Formula /Images/picture.jpg Southeast Michigan Gifted 2025 Matrix Secondary Mineral(s) From the collection of Joan Stoker. 4254 Hardness Streak Specific Gravity Crystal Form(s)

Celestine Formula /Images/picture.jpg Utah Gifted 2025 Matrix Secondary Mineral(s) From the collection of Joan Stoker. 4255 Hardness Streak Specific Gravity Crystal Form(s)

Bariopyrochlore == Zero valent dominant member of Pyrochlore Group Formula /Images/picture.jpg Kukisvumchorr Mt, Khibiny Massif, Murmansk Oblast, Russia acquired 2025 feldspar/td> arfvedsonite From the collection of Tony Nickischer (Excalibur Minerals).
This rare member of the pyrochlore group was renamed to "Zero valent dominant member of pyrochlore group" when the pyrochlore group was redefined in 2010, and it was once called "pandaite", that name abandoned in 1977. Regardless of its rather long, latest name, it occurs here as small, dark brownish micro crystals and aggregates sparsely scattered in seams in splintery black arfvedsonite and massive feldspar matrix. Well sized specimens, all with arrows, ranging from about 3cm to 5.5cm. Rare!
4256 Hardness Streak Specific Gravity Crystal Form(s)

Baiamareite Formula /Images/picture.jpg Sasar Mine, Sasar-Valea Roșie mining area, Baia Mare, Maramureș County, Romania, Carpathian Mountains, Europe acquired 2025 Matrix Secondary Mineral(s) Type Locality specimen for Baiamareite. From the collection of Tony Nickischer (Excalibur Minerals).
This relatively new species occurs as thin, metallic needle-like aggregates, offered here as tiny slivers without matrix. Formula: Ag4Pb12Fe4Sb20S48, monoclinic, IMA # 2023-044, type locality and author's material as well. the Fe-analogue of uchucchacuaite. Tiny needle in capped vial.
4257 Hardness Streak Specific Gravity Crystal Form(s)

CELESTINE with CALCITE Formula /Images/picture.jpg Gordonsville Mine, Carthage, Smith County, Tennessee Collected 1991, acquired 2025 Matrix Secondary Mineral(s) From the collection of Tony Nickischer (Excalibur Minerals).
These highly unusual, pure celestine (no Sr) crystals were collected from the haulage level about 80 feet below the main level some 300-400 feet east of the shaft on the Gordonsville Mine in 1991. The material was SEM-confirmed a few years later but never offered, and we just uncovered A few attractive TN-minatures in our warehouse. The celestine is transparent, pale yellow and bladed (see our image in Mindat), and some are associated with small, transparent, water-clear calcites. Rare at the locality (with very precise pinpointing of the occurrence). Sizes range from 2.5cm to 4cm. List alternates!
4258 Hardness Streak Specific Gravity Crystal Form(s)

Zvyaginite Formula /Images/picture.jpg Pegmatite No. 71, Malyi Punkaruaiv Mountain, Lovozersky District, Murmansk Oblast, Russia acquired 2025 ussingite/microclien Secondary Mineral(s) Type Locality specimen for Zvyaginite. From the collection of Tony Nickischer (Excalibur Minerals), #10.
Another rare Lovozero species, here as colorless, pearly white to pale brown lamellae to several millimeters, likely as pseudomorphs after crystals of vuonnemite or epistolite, all embedded in ussingite/microclien matrix. Formula:NaZnNb2Ti[Si2O7]2O(OH,F03(H2O)4+x (x<1), triclinic, IMA #2013-071. Author's material, named for Russian crystallographer and chemist Professor Boris Borisovich Zvyagin (1921-2002) who was a pioneer in the field of electron diffraction studies of minerals with layered structures. A new member of the epistolite group, all specimens with arrows and ranging 1.5-2cm across. List alternates!
4259 Hardness Streak Specific Gravity Crystal Form(s)

Wolsendorfite Formula /Images/picture.jpg Wolsendorf, Schwarzach bei Nabburg, Schwandorf District, Wölsendorf fluorite mining district, Upper Palatinate, Bavaria, Germany acquired 2025 Uraninite/td> Secondary Mineral(s) Type Locality specimen for Wolsendorfite. From the collection of Tony Nickischer (Excalibur Minerals).
Dark orange-red masses of this unusual uranium mineral richly scattered on matrix, often associated with uraninite and possibly fourmarierite and other species. Classic, type locality material, TN sizes to 1.2cm.
4260 Hardness Streak Specific Gravity Crystal Form(s)

Cornwallite Formula /Images/picture.jpg Rhyolite Pass, Luning, Fitting Mining District, Mineral County, Nevada acquired 2025 Matrix Gilmarite From the collection of Tony Nickischer (Excalibur Minerals).
Tiny green balls of cornwallite sparsely scattered in vugs, typically sitting among micro quartz crystals. The rhyolitic matrix has numerous vugs present, and these could be trimmed further to potentially reveal other micro species. Small TNs averaging about 2cm.
4261 Hardness Streak Specific Gravity Crystal Form(s)

Cornwallite Formula /Images/picture.jpg Rhyolite Pass, Luning, Fitting Mining District, Mineral County, Nevada acquired 2025 Matrix Secondary Mineral(s) From the collection of Tony Nickischer (Excalibur Minerals).
Tiny green balls of cornwallite sparsely scattered in vugs, typically sitting among micro quartz crystals. The rhyolitic matrix has numerous vugs present, and these could be trimmed further to potentially reveal other micro species. Small TNs averaging about 2cm.
4262 Hardness Streak Specific Gravity Crystal Form(s)

GYPSUM with COPPER inclusions Formula /Images/picture.jpg Mission Mine (Mission underground mine), Mission complex, San Xavier, Pima Mining District, Sierrita Mountains, Pima County, Arizona acquired 2025 Matrix Secondary Mineral(s) From the collection of Tony Nickischer (Excalibur Minerals).
Old material recently uncovered in our warehouse, these are clear "selenite" variety gypsum showing metallic, arborescent metallic copper branches scattered throughout the gypsum, making for very interesting and unusual inclusion specimens! The best way to expose the elaborate, included copper dendrites is to carefully split the gypsum along a cleavage plane. Only a couple dozen specimens on hand, most in the 2cm to 5cm size range. Nice!
4263 Hardness Streak Specific Gravity Crystal Form(s)

Isoferroplatinum Formula Uryu River, Hokkaido, Japan acquired 2025 Matrix Secondary Mineral(s) From the collection of Tony Nickischer (Excalibur Minerals).
Extremely small, analyzed silvery metallic alluvial grains of isoferroplatinum without matrix, here offered as single tiny specks in a glass capillary tube and accompanied by our chemical analysis! From rarely offered locality material.
4264 Hardness Streak Specific Gravity Crystal Form(s)

GYPSUM with COPPER inclusions Formula /Images/picture.jpg Mission Mine (Mission underground mine), Mission complex, San Xavier, Pima Mining District, Sierrita Mountains, Pima County, Arizona acquired 2025 Matrix Secondary Mineral(s) From the collection of Tony Nickischer (Excalibur Minerals).
Old material recently uncovered in our warehouse, these are clear "selenite" variety gypsum showing metallic, arborescent metallic copper branches scattered throughout the gypsum, making for very interesting and unusual inclusion specimens! The best way to expose the elaborate, included copper dendrites is to carefully split the gypsum along a cleavage plane. Only a couple dozen specimens on hand, most in the 2cm to 5cm size range. Nice!
4265 Hardness Streak Specific Gravity Crystal Form(s)

Pyrite Formula /Images/picture.jpg Peru acquired 2025 Matrix Secondary Mineral(s) From the collection of Matthew Osman. From the collection of Joel Vicary. 4266 Hardness Streak Specific Gravity Crystal Form(s)

Colemanite Formula /Images/picture.jpg Boron, Kern County, California acquired 2025 Limestone Secondary Mineral(s) From the collection of Matthew Osman. From the collection of Joel Vicary. 4267 Hardness Streak Specific Gravity Crystal Form(s)

Titanite Formula /Images/picture.jpg Ontario, Canada gifted 2025 Matrix Secondary Mineral(s) From the collection of Bob Sinke. 4268 Hardness Streak Specific Gravity Crystal Form(s)

Titanite Formula /Images/picture.jpg Ontario, Canada gifted 2025 Matrix Secondary Mineral(s) From the collection of Bob Sinke. 4269 Hardness Streak Specific Gravity Crystal Form(s)

Vitimite Formula /Images/picture.jpg Solongo B deposit, Ozernoe ore cluster, Yeravninsky District, Buryatia, Russia acquired 2025 Matrix Secondary Mineral(s) A Type Locality specimen for Vitimite. From the collection of Tony Nickischer (Excalibur Minerals).
This rare mineral, first offered by us in 2002, occurs as white, somewhat sectile masses in veinlets in calcite with other species, here as relatively pure extracted masses with minor matrix. Formula: Ca6B14O19[SO4](OH)14*5H2O - monoclinic. Type locality material and from the co-type specimen drill core, IMA #2001-057, only a few small (<1mm) pure samples. Rare stuff!
4270 Hardness Streak Specific Gravity Crystal Form(s)

Riversideite Formula /Images/picture.jpg Crestmore quarries, Crestmore, Jurupa Valley, Riverside County, California acquired 2025 Vesuvianite Secondary Mineral(s) A Type Locality specimen for Riversideite. From the collection of Tony Nickischer (Excalibur Minerals).
Another mineral first found at this prolific locality, riversideite occurs as opaque white fibrous masses and veinlets running through pale green vesuvianite rock, possibly associated with other calcium silicates. Typical representative material, and fairly rich, in sizes from 2cm to 8cm.
4271 Hardness Streak Specific Gravity Crystal Form(s)

Warwickite Formula /Images/picture.jpg Warwick, Town of Warwick, Orange County, New York gifted 2025 white Franklin Marble Secondary Mineral(s) This is a Type Locality specimen for Warwickite. From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske (#913). From the collection of Dr. Petr Cerny. 4272 Hardness Streak Specific Gravity Crystal Form(s)

Wodginite Formula /Images/picture.jpg Tanco Mine (Tanco Pegmatite), Bernic Lake, Lac-du-Bonnet area, Manitoba, Canada gifted 2025 Quartz Lithian Muscovite From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske (#913). From the collection of Dr. Paul B. Moore. 4273 Hardness Streak Specific Gravity Crystal Form(s)

Chondrodite Formula /Images/picture.jpg Cotopaxi, Cotopaxi Mining District, Fremont County, Colorado gifted 2025 Matrix Galena From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske (#Eh149). 4274 Hardness Streak Specific Gravity Crystal Form(s)

Prosopite (bladed) Formula /Images/picture.jpg Goldie carbonatite, Fremont County, Colorado gifted 2025 Matrix Pachnolite (white), Weberite (reddish), Calcite From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske. 4275 Hardness Streak Specific Gravity Crystal Form(s)

Collinsite Formula /Images/picture.jpg Francois Lake, Omineca Mining Division, British Columbia, Canada gifted 2025 Matrix Petroleum var. Bitumen This is a Type Locality specimen for Collinsite. From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske (#988). Collected by Hart Bichler. 4276 Hardness Streak Specific Gravity Crystal Form(s)

Muscovite Formula /Images/picture.jpg Black Hills, SD Collected 2025, Gifted 2025 Matrix Secondary Mineral(s) Collected by David Lehker. 4277 Hardness Streak Specific Gravity Crystal Form(s)

Babingtonite Formula /Images/picture.jpg Deerfield, Franklin County, Massachusetts Gifted 2025 Matrix Baryte, Calcite From the collection of David Lehker. Collected by Steve Garza. 4278 Hardness Streak Specific Gravity Crystal Form(s)

Vauquelinite Pb₂Cu(PO₄)(CrO₄)(OH) /Images/picture.jpg Le Cantonnier Vein, Nontron Dordogne, Aquitaine, France acquired 2008 Quartz Secondary Mineral(s) From the collection of Wild About Rocks, #112522. Fragment from #2571 after it was dropped. 4279 Hardness Streak Specific Gravity Crystal Form(s)

Vauquelinite Pb₂Cu(PO₄)(CrO₄)(OH) /Images/picture.jpg Le Cantonnier Vein, Nontron Dordogne, Aquitaine, France acquired 2008 Quartz Secondary Mineral(s) From the collection of Wild About Rocks, #112522. Fragment from #2571 after it was dropped. 4280 Hardness Streak Specific Gravity Crystal Form(s)

Dundasite Formula /Images/picture.jpg Tip Top Tunnel, Magdalena Mining District, Socorro County, New Mexico acquired 2020 Matrix Secondary Mineral(s) From the collection of Jim Daly (Sauktown Sales, #4737). 4281 Hardness Streak Specific Gravity Crystal Form(s)

Sorbyite Formula /Images/picture.jpg Candelaria Mining District, Mineral County, Nevada Collected before 2006, acquired 2025 Quartz Secondary Mineral(s) probable From the collection of Tony Nickischer (Excalibur Minerals). From the collection of Dr. Sidney Williams.
SORBYITE- Candelaria, Mineral Co., Nevada
Grey metallic masses of sorbyite disseminated in greyish white quartz matrix, these from X-rayed material by Dr. Sidney Williams. Probe work has found much of this material to be a complex mixture containing other sulfides, confirmed by the complex XRD results as well. Moderately rare and well represented in these old specimens from 2cm to 6cm and one large 9x7cm specimen.
4282 Hardness Streak Specific Gravity Crystal Form(s)

Ashcroftine-(Y) Formula /Images/picture.jpg Narssarssuk pegmatite, Narsaarsuk Plateau, Igaliku, Kujalleq, Greenland acquired 2025 Aegirine Secondary Mineral(s) not identified A Type Locality specimen for Ashcroftine-(Y). From the collection of Tony Nickischer (Excalibur Minerals).
ASHCROFTINE-(Y)- Narsaarsuk, Igaliku, Kujalleq, Greenland
From the type locality for the species, ashcroftine-(Y) presents as tiny white to pale pinkish silky masses sparsely scattered on dark, aegirine-rich matrix. This classic locality offers over 65 different species (13 type localities), and specimens of the mineral are rare here. Only three TNs available, sizes average 2.5cm.
4283 Hardness Streak Specific Gravity Crystal Form(s)

Cyrilovite Formula /Images/picture.jpg Eduardo claim, Barra do Cuieté, Conselheiro Pena, Minas Gerais, Brazil acquired 2025 Albite Variscite, unidentified Secondary Mineral(s) present From the collection of Tony Nickischer (Excalibur Minerals).
CYRILOVITE pseudo @ WHITEITE- Lavra do Eduardo, Galileia, M.G., Brazil
> Exceptional micros of bright yellow cyrilovite richly scattered on matrix, forming sharp pseudomorphs after tabular whiteite crystals! Some specimens associated with bright pinkish ferrian variscite, occasionally with other species as well on albite matrix. Excellent phosphate assemblage specimens and unusual pseudomorphs with fine micro potential, all mounted in standard TN boxes and ranging from about 2cm to 2.5cm.

The Eduardo pegmatite mine (“Lavra do Eduardo,” in Portuguese), listed in the literture as near Boa Vista creek, in the Conselheiro Pena municipality, appears to be the Eduardo claim, Barra do Cuieté, Conselheiro Pena, Minas Gerais, Brazil on MinDat; Galileia, M.G., Brazil is North of this locality within Conselheiro Pena. Before being known as the Eduardo claim, it was called the Córrego Boa Vista mine. 4284 Hardness Streak Specific Gravity Crystal Form(s)

Gadolinite-(Y) Formula Hidra (Hittero), Flekkefjord, Agder, Norway acquired 2025 Matrix Muscovite From the collection of Tony Nickischer (Excalibur Minerals). From the collection of Wards Natural Science.
GADOLINITE-(Y)- Hidra (Hittero), Flekkefjord, Agder, Norway
Old material originally collected for Wards Natural Science, this material is dark, brownish black, glassy masses of analyzed gadolinite-(Y) largely comprising matrix. Submicroscopic intergrowths of other REE minerals is likely in this older material, specimen sizes ranging from 2cm to 4cm, a few in the 5cm-6cm size range, supplied with copy of our EDS spectra.
4285 Hardness Streak Specific Gravity Crystal Form(s)

Fluor-Uvite Formula Brumado Mine, Bahia, Brazil Collected before 1994, acquired 2025 Matrix Secondary Mineral(s) From the collection of Tony Nickischer (Excalibur Minerals). From the collection of Dr. Richard V. Gaines.
FLUOR-UVITE- Brumado Mine, Bahia, Brazil
Frosted pale green to glassy, deep green single crystals of this tourmaline group mineral, all matrix-free. Most of these are somewhat flattened, hexagonal-outlined floater crystals. Both the F-dominant and OH- dominant species (the "oxy-uvite" not yet approved) occur here, and analyses are needed to differentiate between them. Neat specimens, originally obtained from Dr. Richard Gaines, then expected to be the (OH) species (someday), but those we have analyzed are definitely fluorine-rich. Sizes from 1 cm to 1.5cm. accompanied by a copy of our analytical work.
4286 Hardness Streak Specific Gravity Crystal Form(s)

Fluorapophyllite-(K) Formula /Images/picture.jpg Laurel Hill (Snake Hill), Secaucus, Hudson County, New Jersey Collected before 1975, acquired 2025 greenish black Clinochlore var. Diabantite Gmelinite, Stilbite-(Ca) From the collection of Tony Nickischer (Excalibur Minerals). From the collection of Ken Wallings (Wallings Collection).
FLUORAPOPHYLLITE-(K), DIABANTITE- Snake Hill, Secaucus, Hudson Co., New Jers
Commonly known as "Laurel Hill", this locality has been obliterated and reclaimed, but in its heyday produced excellent zeolites and is also the type locality for petersite-(Y). This large, flat, triangular specimen shows one side richly covered with small (5mm) fluorapophyllite-(K) crystals with rarely interspersed, transparent gmelinite crsytals (needs scope), all overlaying dark greenish black clinochlore var: diabantite. The other side of this thin vein specimen is also fully covered, this side by stilbite-(Ca) crystals and druses. Ex-Wallings collection, collected over 50 years ago, size about 17x7x2 cm. One only!
4287 Hardness Streak Specific Gravity Crystal Form(s)

Sphalerite Formula /Images/picture.jpg Dundas mineral field, Zeehan mining district, West Coast municipality, Tasmania, Australia gifted 2025 Dolostone Secondary Mineral(s) From the collection of Matthew Osman. From the collection of Joel Vicary. See #4319 for the other half of this specimen. 4288 Hardness Streak Specific Gravity Crystal Form(s)

Palermoite Formula /Images/picture.jpg Palermo No. 1 Mine, Groton, Grafton County, New Hampshire gifted 2025 Matrix Samuelsonite, Goyazite, Goedkenite (Goedkinite per label) This is a Type Locality specimen for Palermoite, Samuelsonite, and Goedkenite. From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske. 4289 Hardness Streak Specific Gravity Crystal Form(s)

Triplite Formula /Images/picture.jpg Mica Lode Mine (Mica Hill Mine), Eight Mile Park Pegmatite Mining District, Fremont County, Colorado per MinDat
Mica Lode, 8 Mile Park, Colorado per Garske gifted 2025 Matrix Muscovite From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske (#EH52). 4290 Hardness Streak Specific Gravity Crystal Form(s)

Citrine Formula /Images/picture.jpg Fraser Quarry, Glamorgan Township, Highlands East Township, Haliburton County, Ontario, Canada per MinDat
Frazer Nepheline Quarry, Bancroft per Vicary. gifted 2025 nepheline pegmatite Zircon From the collection of Matthew Osman. From the collection of Joel Vicary. 4291 Hardness Streak Specific Gravity Crystal Form(s)

Copiapite Formula /Images/picture.jpg Dexter No. 7 Mine, Calf Mesa Mining District, Emery County, Utah per MinDat
Dexter No. 7 Mine, San Rafael, Swell, Utah per Garske gifted 2025 Matrix Secondary Mineral(s) From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske (#305). 4292 Hardness Streak Specific Gravity Crystal Form(s)

Sarcopside Formula /Images/picture.jpg Bull Moose Mine, Custer, Custer Mining District, Custer County, South Dakota gifted 2025 Matrix Secondary Mineral(s) From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske (#753). 4293 Hardness Streak Specific Gravity Crystal Form(s)

Mitridatite (green) Formula /Images/picture.jpg Tip Top Mine, Fourmile, Custer Mining District, Custer County, South Dakota perMinDat
Tip Top Mine, Custer Co., South Dakota per Garske gifted 2025 Matrix Rockbridgeite (fiberous) From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske. 4294 Hardness Streak Specific Gravity Crystal Form(s)

Hidalgoite Formula /Images/picture.jpg Gold Hill Mine, Gold Hill, Gold Hill Mining District (Clifton Mining District), Tooele County, Utah gifted 2025< Matrix unidentified Secondary Mineral(s) unidentified From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske (#419). From the collection of Dr. John Clarkson. 4295 Hardness Streak Specific Gravity Crystal Form(s)

Eucryptite Formula /Images/picture.jpg Bikita pegmatite, Bikita District, Masvingo, Zimbabwe per MinDat
Bikita, Rhodesia per Garske gifted 2025 Matrix Secondary Mineral(s) From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske (#EH33). 4296 Hardness Streak Specific Gravity Crystal Form(s)

Petalite Formula /Images/picture.jpg Bikita pegmatite, Bikita District, Masvingo, Zimbabwe per MinDat
Bikita, Rhodesia per Garske gifted 2025 Matrix Lepidolite From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske (#EH17 per label, #68 on specimen). 4297 Hardness Streak Specific Gravity Crystal Form(s)

Spurrite Formula /Images/picture.jpg La Encantada mining district, Múzquiz Municipality, Coahuila, Mexico per MinDat
Encantada dist., Coahuila, Mexico per Garske
MinDat has to go to Coahuila, Mexico before Spurrite appears in the mineral list gifted 2025 Matrix Secondary Mineral(s) From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske (#EH16 per label, #2A on specimen). 4298 Hardness Streak Specific Gravity Crystal Form(s)

Bikitaite Formula /Images/picture.jpg Bikita pegmatite, Bikita District, Masvingo, ZimbabweperMinDat
Bikita, Rhodesia per Garske gifted 2025 Matrix Secondary Mineral(s) From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske (#EH7). 4299 Hardness Streak Specific Gravity Crystal Form(s)

Valleriite Formula /Images/picture.jpg Loolekop pipe, Palabora Mine, Phalaborwa, Ba-Phalaborwa Local Municipality, Mopani District Municipality, Limpopo, South Africa per MinDat
Palabora carbonatite, Loolekop, South Africa per Garske gifted 2025 Calcite Secondary Mineral(s) From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske. 4300 Hardness Streak Specific Gravity Crystal Form(s)

Haggite Formula /Images/picture.jpg Runge Mine, Edgemont Uranium Mining District, Fall River County, South Dakota gifted 2025 Sandstone/td> Paramontroseite From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske. 4301 Hardness Streak Specific Gravity Crystal Form(s)

Whitlockite Formula /Images/picture.jpg Palermo No. 1 Mine, Groton, Grafton County, New Hampshire per MinDat
Palermo No. 1 Mine, North Groton, New Hampshire per Garske gifted 2025 Matrix Secondary Mineral(s) This is a Type Locality specimen for Whitlockite. From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske (#486). From the collection of Dr. Paul B. Moore. 4302 Hardness Streak Specific Gravity Crystal Form(s)

Graftonite Formula /Images/picture.jpg Bull Moose Mine, Custer, Custer Mining District, Custer County, South Dakota gifted 2025 Matrix Quartz From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske. 4303 Hardness Streak Specific Gravity Crystal Form(s)

Pyrolusite Formula /Images/picture.jpg Taylor Mine, Alberta, Baraga County, Michigan Collected before 2013, acquired 2026 Matrix Secondary Mineral(s) From the collection of Tony Nickischer (Excalibur Minerals). From the collection of Dr. George Robinson.
PYROLUSITE- Taylor Mine, Alberta, Baraga Co., Michigan
> Excellent, silvery grey sprays of radiating pyrolusite crystals richly scattered on and protruding from seams in matrix, these rivaling the old Moroccan material of the 1970s. Obtained from the late Dr. George Robinson at the A.E. Seaman Museum, these are rather attractive for a typically ugly species, some are also rich examples with much micro potential, varying in size from about 3cm to large 9cm groups. Nice!
4304 Hardness Streak Specific Gravity Crystal Form(s)

Silver Ore Formula /Images/picture.jpg Silver Cliff Mine, Coleman Township, Cobalt area, Cobalt-Gowganda region, Timiskaming District, Ontario, Canada Collected 1981, acquired 2026 Matrix Calcite, Safflorite From the collection of Tony Nickischer (Excalibur Minerals).
Silver Ore- Silver Cliff Mine, Cobalt, Ontario, Canada
> Some ugly ore samples from a locality closed in the early 1950s, the Silver Cliff Mine sported just a handful of species that included native silver, pyrargyrite, safflorite etc that produced over half a million ounces of silver during its short lifetime. While some of these minerals mat be present in these mine-run samples, we promise only dark greyish matrix with veins of calcite, tiny pyrite, chalcopyrite and likely safllorite when viewed under the 'scope. Collected off the dumps in 1981, these samples might show more when broken down and viewed under magnification, hence the inexpensive offer of 3cm to 8cm specimens.
4305 Hardness Streak Specific Gravity Crystal Form(s)

Ailsa Craig Granite Drink Cube Formula Ailsa Craig, South Ayrshire, Scotland, UK acquired 2026 Matrix Secondary Mineral(s) Acquired from Kays Curling. This giftware has been hand crafted in Scotland using the same type of granite that makes up the curling stones used in Milano Cortina 2026. NOTE: THIS GIFTWARE HAS NOT BEEN MADE FROM THE ACTUAL STONES USED AT MILANO CORTINA 2026. The granite is approximately 60 million years old and is sourced from the remote Scottish island, Ailsa Craig located 10 miles off the Ayrshire coast.
Island is built mainly of arfvedsonite-aegirine microgranite, which is intruded by basic dikes. The island is famous for production of curling stones because microgranites are particularly tough and take a high polish. The stones were produced and exported from the quarry during 1890s, then closed and reopened in 1961. It proved to be uneconomic and closed again in 1973. Material is now taken occasionally to fulfil orders.
Two Milano Cortina 2026 Granite Coasters and Four Drink Chill Cubes (Not made with the Olympic Curling Stones); half the order was donated to the Grand Rapids Public Museum. 4306 Hardness Streak Specific Gravity Crystal Form(s)

Ailsa Craig Granite Drink Cube Formula Ailsa Craig, South Ayrshire, Scotland, UK acquired 2026 Matrix Secondary Mineral(s) Acquired from Kays Curling. This giftware has been hand crafted in Scotland using the same type of granite that makes up the curling stones used in Milano Cortina 2026. NOTE: THIS GIFTWARE HAS NOT BEEN MADE FROM THE ACTUAL STONES USED AT MILANO CORTINA 2026. The granite is approximately 60 million years old and is sourced from the remote Scottish island, Ailsa Craig located 10 miles off the Ayrshire coast.
Island is built mainly of arfvedsonite-aegirine microgranite, which is intruded by basic dikes. The island is famous for production of curling stones because microgranites are particularly tough and take a high polish. The stones were produced and exported from the quarry during 1890s, then closed and reopened in 1961. It proved to be uneconomic and closed again in 1973. Material is now taken occasionally to fulfil orders.
Two Milano Cortina 2026 Granite Coasters and Four Drink Chill Cubes (Not made with the Olympic Curling Stones); half the order was donated to the Grand Rapids Public Museum. 4307 Hardness Streak Specific Gravity Crystal Form(s)

Ailsa Craig Granite Coaster Formula Ailsa Craig, South Ayrshire, Scotland, UK acquired 2026 Matrix Secondary Mineral(s) Acquired from Kays Curling. This giftware has been hand crafted in Scotland using the same type of granite that makes up the curling stones used in Milano Cortina 2026. NOTE: THIS GIFTWARE HAS NOT BEEN MADE FROM THE ACTUAL STONES USED AT MILANO CORTINA 2026. The granite is approximately 60 million years old and is sourced from the remote Scottish island, Ailsa Craig located 10 miles off the Ayrshire coast.
Island is built mainly of arfvedsonite-aegirine microgranite, which is intruded by basic dikes. The island is famous for production of curling stones because microgranites are particularly tough and take a high polish. The stones were produced and exported from the quarry during 1890s, then closed and reopened in 1961. It proved to be uneconomic and closed again in 1973. Material is now taken occasionally to fulfil orders.
Two Milano Cortina 2026 Granite Coasters and Four Drink Chill Cubes (Not made with the Olympic Curling Stones); half the order was donated to the Grand Rapids Public Museum. 4308 Hardness Streak Specific Gravity Crystal Form(s)

Quartzite Formula /Images/picture.jpg Plyground at IHM School, Grand Rapids, Michigan Collected November 2025 Matrix Secondary Mineral(s) Collected by Alyssa Webb. 4309 Hardness Streak Specific Gravity Crystal Form(s)

Crepidula aculeata (Gmelin, 1791) Formula /Images/picture.jpg Hampton, VA gifted 2025 Matrix Secondary Mineral(s) From the collection of Matthew Osman. From the collection of Joel Vicary. Label notes "Mio. Yorktown Fm.". spiny slippersnail In English, Synonym of Bostrycapulus aculeatus (Gmelin, 1791) 4310 Hardness Streak Specific Gravity Crystal Form(s)

Melanterite Formula /Images/picture.jpg Runge Mine, Edgemont Uranium Mining District, Fall River County, South Dakota gifted 2025 Matrix Secondary Mineral(s) From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske (#785). 4311 Hardness Streak Specific Gravity Crystal Form(s)

Pollucite Formula /Images/picture.jpg Bikita pegmatite, Bikita District, Masvingo, Zimbabwe per MinDat
Bikita, Rhodesia per Vicary gifted 2025 Matrix Secondary Mineral(s) From the collection of Matthew Osman. From the collection of Joel Vicary. Specimen was numbered "97.". 4312 Hardness Streak Specific Gravity Crystal Form(s)

Alluaudite Formula /Images/picture.jpg Pleasant Valley Pegmatite, Fourmile, Custer Mining District, Custer County, South Dakota per MinDat
Pleasant Valley Mine, Custer Co., South Dakota per Garske gifted 2025 Matrix Secondary Mineral(s) From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske (#418). 4313 Hardness Streak Specific Gravity Crystal Form(s)

Coffinite Formula /Images/picture.jpg Waterson Mine, San Rafael River Mining District, Emery County, Utah per MinDat
Waterson Shaft, Vanura Claim, Emery Co., Utah per Garske gifted 2025 Sandstone Uraninite From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske. 4314 Hardness Streak Specific Gravity Crystal Form(s)

Albite var. Clevelandite Formula /Images/picture.jpg Harding Mine, Picuris District, Taos County, New Mexico per MinDat
Harding Mine, Dixon, New Mexico per Vicary gifted 2025 Dolostone Secondary Mineral(s) From the collection of Matthew Osman. From the collection of Joel Vicary. 4315 Hardness Streak Specific Gravity Crystal Form(s)

Corkite Formula /Images/picture.jpg Silver Queen Mine (New Silver Queen Mine), Deadwood, Galena Mining District, Lawrence County, South Dakota per MinDat
Silver Queen Mine, Galena, South Dakota per Garske gifted 2025 Matrix Secondary Mineral(s) From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske. See #4317 for the other half of this specimen. 4316 Hardness Streak Specific Gravity Crystal Form(s)

Corkite Formula /Images/picture.jpg Silver Queen Mine (New Silver Queen Mine), Deadwood, Galena Mining District, Lawrence County, South Dakota per MinDat
Silver Queen Mine, Galena, South Dakota per Garske gifted 2025 Matrix Secondary Mineral(s) From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske. See #4316 for the other half of this specimen. 4317 Hardness Streak Specific Gravity Crystal Form(s)

Galena Formula /Images/picture.jpg Gilman, Gilman Mining District (Battle Mountain Mining District; Red Cliff Mining District), Eagle County, Colorado gifted 2025 Quart Sphalerite var. Marmatite From the collection of Matthew Osman. From the collection of Joel Vicary. 4318 Hardness Streak Specific Gravity Crystal Form(s)

Sphalerite Formula /Images/picture.jpg Dundas mineral field, Zeehan mining district, West Coast municipality, Tasmania, Australia gifted 2025 Dolostone Secondary Mineral(s) From the collection of Matthew Osman. From the collection of Joel Vicary. See #4288 for the other half of this specimen. 4319 Hardness Streak Specific Gravity Crystal Form(s)

Principal Mineral(s) Formula /Images/picture.jpg Locality When Collected Matrix Secondary Mineral(s) Comments 4320 Hardness Streak Specific Gravity Crystal Form(s)

Principal Mineral(s) Formula /Images/picture.jpg Locality When Collected Matrix Secondary Mineral(s) Comments 4321 Hardness Streak Specific Gravity Crystal Form(s)

Principal Mineral(s) Formula /Images/picture.jpg Locality When Collected Matrix Secondary Mineral(s) Comments 4322 Hardness Streak Specific Gravity Crystal Form(s)

Principal Mineral(s) Formula /Images/picture.jpg Locality When Collected Matrix Secondary Mineral(s) Comments 4323 Hardness Streak Specific Gravity Crystal Form(s)

Principal Mineral(s) Formula /Images/picture.jpg Locality When Collected Matrix Secondary Mineral(s) Comments 4324 Hardness Streak Specific Gravity Crystal Form(s)

Principal Mineral(s) Formula /Images/picture.jpg Locality When Collected Matrix Secondary Mineral(s) Comments 4325 Hardness Streak Specific Gravity Crystal Form(s)

Principal Mineral(s) Formula /Images/picture.jpg Locality When Collected Matrix Secondary Mineral(s) Comments 4326 Hardness Streak Specific Gravity Crystal Form(s)

Principal Mineral(s) Formula /Images/picture.jpg Locality When Collected Matrix Secondary Mineral(s) Comments 4327 Hardness Streak Specific Gravity Crystal Form(s)

Becquerelite Formula /Images/picture.jpg Mi Vida Mine, Lisbon Valley Mining District, San Juan County, Utah acquired 2026 Matrix not identified Bayleyite, other Secondary Mineral(s) not identiofied From the collection of Tony Nickischer (Excalibur Minerals).
BECQUERELITE w/ BAILEYITE- Mi Vida Mine, San Juan Co., Utah
Lightly scattered bright yellow druses of this moderately hot mineral on matrix. The locality was made famous by Charlie Steen in the early 1950s uranium boom. An excellent set of articles were written by the late Bob Werner and published in Mineral News in 2015 (Vol. 31 Nos. 10 and 11) about Steen and the mad uranium rush of the day in Utah and the Mi Vida Mine. The specimen is fairly hot, and the purported becquerelite (not analyzed by us) occurs as yellow crusts scattered on matrix with fluorescent bayleite and several unknowns, the piece measuring about 7x5x3 cm. One only!

Mindat documents Becquerelite in the Lisbon Valley Mining District, but not from Mi Vida Mine. Label on specimen says Yel Flro EDS. 4328 Hardness Streak Specific Gravity Crystal Form(s)

Turanite Formula /Images/picture.jpg The Fish, Gibellini Mining District, Eureka County, Nevada acquired 2026 Matrix Secondary Mineral(s) From the collection of Tony Nickischer (Excalibur Minerals).
TURANITE- The Fish, Eureka Co., Nevada
Minute yellow-green platy aggregates and crusts of turanite sparsely scattered over rock matrix, some occasionally with minor volborthite. Interesting and rarely offered, some with mediocre micro potential, matrix sizes from 2cm to 6cm.

Mindat documents Turanite in Eureka County, in the Gibellini Mining District with a question mark, and not from The Fish. 4329 Hardness Streak Specific Gravity Crystal Form(s)

Diamond Formula /Images/picture.jpg Sao Luis river alluvials, Juína, Mato Grosso, Brazil acquired 2026 Matrix possible jeffbenite, breyerite and/or deltanitrogen From the collection of Tony Nickischer (Excalibur Minerals).
DIAMOND- San Luis River, Juina, Mato Grosso, Brazil
The Sao Luis river alluvial placers produced diamonds with submicroscopic inclusions of three new minerals: jeffbenite, breyerite and deltanitrogen. All have been IMA-approved but are virtually impossible to confirm with sophisticated analytical techniques beyond our capabilities. We secured over a dozen included diamonds from this alluvial deposit, and all show inclusions at 20x or more, but we can only offer them as "just super-deep diamonds" as potential hosts for all (or none) of the new species. Colors range from colorless to slightly yellowish, weighing from 0.10 carats to over 0.60 carats. List alternates!
4330 Hardness Streak Specific Gravity Crystal Form(s)

Westerveldite Formula Ilimaussaq complex, Kujalleq, Greenland Collected 1977, acquired 2026 Matrix Secondary Mineral(s) From the collection of Tony Nickischer (Excalibur Minerals). From the collection of the Copenhagen University Mineral Museum.
WESTERVELDITE- Ilimaussaq, Kujalleq, Greenland
This uncommon mineral occurs here as small greyish black metallic grains sparsely scattered in rock matrix, from one of the few well known localities for the species. These were originally obtained in the late 1970's via exchange with Ole Petersen at the Copenhagen University mineral museum, specimens ranging in size from about 1.5cm, with a few larger to 5cm, all with copies of two exchange labels.
4331 Hardness Streak Specific Gravity Crystal Form(s)

Tiemannite Formula /Images/picture.jpg Deer Trail Mine, Mount Baldy-Ohio Mining District, Piute County, Utah acquired 2026 Sandstone Calcite From the collection of Tony Nickischer (Excalibur Minerals).
TIEMANNITE- Deer Trail Mine, nr. Marysvale, Utah
This unusual mercury-selenide occus as greyish to black metallic masses sparsely scattered on calcite in pale greyish rock matrix, occasionally with other unidentified and included phases. Old material from this prolific Piute County area; sizes from 1.5cm to 5cm, depending on size and coverage.

Mindat documents Tiemannite in the Mount Baldy-Ohio Mining District, but not at the Deer Trail Mine. 4332 Hardness Streak Specific Gravity Crystal Form(s)

Wermlandite Formula /Images/picture.jpg 220 m Level, Langban Mine, Langban Ore District, Filipstad, Varmland County, Sweden When Collected Calcite Secondary Mineral unidentified From the collection of Tony Nickischer (Excalibur Minerals).
WERMLANDITE- 220 m Level, Langban, Varmland, Sweden
Several exposed vugs in massive white calcite show tiny, greyish-green platelets of wermlandite crystals scattered about. From the type locality, it is unusual to have precise mine level data on Langban material, and these are available as small fragments in a vial, TNs, and a few slightly larger matrix specimens.

This is a Type Locality specimen for Wermlandite. 4333 Hardness Streak Specific Gravity Crystal Form(s)

Erythrosiderite Formula /Images/picture.jpg Kopeysk, Chelyabinsk Oblast, Russia Collected before 2001, acquired 2026 Matrix Secondary Mineral(s) From the collection of Tony Nickischer (Excalibur Minerals). From the collection of Forrest "Boots" Cureton.
ERYTHROSIDERITE- Kopeysk, Chelyabinsk Oblast, Urals, Russia
Deep orange to reddish crusty aggregates of this rare mineral scattered on matrix or as small amounts of relatively pure masses in a glass vial. Old Cureton stock from 2001, horrible stuff that eats your white cardboard boxes, small masses in 3cm glass vials; matrix samples from about 1cm to 2cm.

4334 Hardness Streak Specific Gravity Crystal Form(s)

Chapmanite Formula Smilkov, Benešov District, Central Bohemian Region, Czech Republic acquired 2026 Matrix Secondary Mineral(s) From the collection of Tony Nickischer (Excalibur Minerals).
CHAPMANITE- Smilkov, nr. Votice, Bohemia, Czech Republic
Light olive to yellow green films of chapmanite richly coating one surface of the matrix from this famous locality but small. Perhaps its only claim to mineralogical fame, this small village of about 300 inhabitants lies due south of Prague and was widely collected by Czech geologists and mineralogists. Specimen size is a generous but thin 6x4cm, with Czech National Museum label! One only.

Specimen was numbered 724 with a cloth tape label. 4335 Hardness Streak Specific Gravity Crystal Form(s)

Principal Mineral(s) Formula /Images/picture.jpg Locality When Collected Matrix Secondary Mineral(s) Comments 4336 Hardness Streak Specific Gravity Crystal Form(s)

Principal Mineral(s) Formula /Images/picture.jpg Locality When Collected Matrix Secondary Mineral(s) Comments 4337 Hardness Streak Specific Gravity Crystal Form(s)

Principal Mineral(s) Formula /Images/picture.jpg Locality When Collected Matrix Secondary Mineral(s) Comments 4338 Hardness Streak Specific Gravity Crystal Form(s)

Principal Mineral(s) Formula /Images/picture.jpg Locality When Collected Matrix Secondary Mineral(s) Comments 4339 Hardness Streak Specific Gravity Crystal Form(s)

Principal Mineral(s) Formula /Images/picture.jpg Locality When Collected Matrix Secondary Mineral(s) Comments 4340 Hardness Streak Specific Gravity Crystal Form(s)

Principal Mineral(s) Formula /Images/picture.jpg Locality When Collected Matrix Secondary Mineral(s) Comments 4341 Hardness Streak Specific Gravity Crystal Form(s)

Principal Mineral(s) Formula /Images/picture.jpg Locality When Collected Matrix Secondary Mineral(s) Comments 4342 Hardness Streak Specific Gravity Crystal Form(s)

Principal Mineral(s) Formula /Images/picture.jpg Locality When Collected Matrix Secondary Mineral(s) Comments 4343 Hardness Streak Specific Gravity Crystal Form(s)

Principal Mineral(s) Formula /Images/picture.jpg Locality When Collected Matrix Secondary Mineral(s) Comments 4344 Hardness Streak Specific Gravity Crystal Form(s)

Principal Mineral(s) Formula /Images/picture.jpg Locality When Collected Matrix Secondary Mineral(s) Comments 4345 4346 4347 4348 4349 4350 4351 4352 4353 4354 4355 4356 4357 4358 4359 4360 4361 4362 4363 4364 4365 4366 4367 4368 4369 4370 4371 4372 4373 4374 4375 4376 4377 4378 4379 4380 4381 4382 4383 4384 4385 4386 4387 4388 4389 4390 4391 4392 4393 4394 4395 4396 4397 4398 4399 4400 4401 4402 4403 4404 4405 4406 4407 4408 4409 4410 4411 4412 4413 4414 4415 4416 4417 4418 4419 4420 4421 4422 4423 4424 4425 4426 4427 4428 4429 4430 4431 4432 4433 4434 4435 4436 4437 4438 4439 4440 4441 4442 4443 4444 4445 4446 4447 4448 4449 4450 4451 4452 4453 4454 4455 4456 4457 4458 4459 4460 4461 4462 4463 4464 4465 4466 4467 4468 4469 4470 4471 4472 4473

Silver Formula /Images/4474.jpg Grube Himmmelsfahrst (Himmelfurst Mine), Saxon, Freiberg Germany Acquired from Caleb Simkoff in 2001, originally collected in 1835 None None 0.9 cms X 1.2 cms X 0.7 cms #4474 Hardness Streak Specific Gravity Crystal Form(s)

Principal Mineral(s) Formula /Images/picture.jpg Locality When Collected Matrix Secondary Mineral(s) Comments 4475 4476 4477 4478 4479 4480 4481 4482 4483 4484 4485 4486 4487 4488 4489 4490 4491 4492 4493 4494 4495 4496 4497 4498 4499 Hardness Streak Specific Gravity Crystal Form(s)

Principal Mineral(s) Formula Locality When Collected Matrix Secondary Mineral(s) Comments Reference Hardness Streak Specific Gravity Crystal Form(s)

Selections from Kreigh Tomaszewski's
Rock and Mineral Collection

Yes, there are specimens hidden in this list, but you may have to scroll down to find them.
Principal Mineral(s)	Formula		Locality	When Collected	Matrix	Secondary Mineral(s)	Comments	Reference #	Hardness	Streak	Specific Gravity	Crystal Form(s)
Yingjiangite	Formula	/Images/picture.jpg	Kladska, Marianske Lazne, Cheb District, Karlovy Vary Region, Czech Republic	acquired 2025	Matrix	Torbernite	From the collection of Tony Nickischer (Excalibur Minerals). This exceptionally rare uranium phosphate occurs as minute golden yellow aggregates sparsely scattered on matrix, some with minor torbernite. Weakly fluorescent and XRD-confirmed material, this from the second world occurrence for the species. Only a few available, small fragment in a capsule, matrix specimens from 0.8cm to 2.4cm, and one 7x5cm sample. Rare stuff!	4250	Hardness	Streak	Specific Gravity	Crystal Form(s)
Schulenbergite	Formula	/Images/picture.jpg	La Platosa Mine (Mina Platosa), Bermejillo, Mapimí Municipality, Durango, Mexico	acquired 2025	Matrix	Anglesite	From the collection of Tony Nickischer (Excalibur Minerals). From the 2001 discovery, superb, pale blue micro balls of schulenbergite well-scattered on matrix, many with minor admixed serpierite, glassy anglesite and possibly other phases. Attractive material with good micro potential, specimens from about 3cm to 6cm across.	4251	Hardness	Streak	Specific Gravity	Crystal Form(s)
Mascagnite	Formula	/Images/picture.jpg	Ravat village, Yagnob River, Zeravshan Range, Sughd, Tajikistan	acquired 2025	Matrix	Secondary Mineral(s)	From the collection of Tony Nickischer (Excalibur Minerals). A very fine crystal "worm" of mascagnite without matrix. This silky white 3.5cm long crystal is tightly curved and somewhat chatoyant. Amazingly well formed for the species. Only three on hand. Very neat stuff and quite unique! Russian label list locality as Tian-Shan, Tajikistan<, USSR.	4252	Hardness	Streak	Specific Gravity	Crystal Form(s)
Corderoite	Formula	/Images/picture.jpg	McDermitt Mine (Cordero Mine), Opalite Mining District, Humboldt County, Nevada	acquired 2025	Opal	Montmorillonite, Cinnabar	A Type Locality specimen for Corderoite. From the collection of Tony Nickischer (Excalibur Minerals). Pale pinkish orange inclusions of corderoite in opalite and occasionally as masses lightly scattered in crusty aggregates with montmorillonite and possibly minor cinnabar. Type locality material but rather impure, admixed specimens, sizes from 2.5cm to 6cm. Ex-Cureton from Dr. Gene Foord, the senior author for the species.	4253	Hardness	Streak	Specific Gravity	Crystal Form(s)
Halite	Formula	/Images/picture.jpg	Southeast Michigan	Gifted 2025	Matrix	Secondary Mineral(s)	From the collection of Joan Stoker.	4254	Hardness	Streak	Specific Gravity	Crystal Form(s)
Celestine	Formula	/Images/picture.jpg	Utah	Gifted 2025	Matrix	Secondary Mineral(s)	From the collection of Joan Stoker.	4255	Hardness	Streak	Specific Gravity	Crystal Form(s)
Bariopyrochlore == Zero valent dominant member of Pyrochlore Group	Formula	/Images/picture.jpg	Kukisvumchorr Mt, Khibiny Massif, Murmansk Oblast, Russia	acquired 2025	feldspar/td>	arfvedsonite	From the collection of Tony Nickischer (Excalibur Minerals). This rare member of the pyrochlore group was renamed to "Zero valent dominant member of pyrochlore group" when the pyrochlore group was redefined in 2010, and it was once called "pandaite", that name abandoned in 1977. Regardless of its rather long, latest name, it occurs here as small, dark brownish micro crystals and aggregates sparsely scattered in seams in splintery black arfvedsonite and massive feldspar matrix. Well sized specimens, all with arrows, ranging from about 3cm to 5.5cm. Rare!	4256	Hardness	Streak	Specific Gravity	Crystal Form(s)
Baiamareite	Formula	/Images/picture.jpg	Sasar Mine, Sasar-Valea Roșie mining area, Baia Mare, Maramureș County, Romania, Carpathian Mountains, Europe	acquired 2025	Matrix	Secondary Mineral(s)	Type Locality specimen for Baiamareite. From the collection of Tony Nickischer (Excalibur Minerals). This relatively new species occurs as thin, metallic needle-like aggregates, offered here as tiny slivers without matrix. Formula: Ag4Pb12Fe4Sb20S48, monoclinic, IMA # 2023-044, type locality and author's material as well. the Fe-analogue of uchucchacuaite. Tiny needle in capped vial.	4257	Hardness	Streak	Specific Gravity	Crystal Form(s)
CELESTINE with CALCITE	Formula	/Images/picture.jpg	Gordonsville Mine, Carthage, Smith County, Tennessee	Collected 1991, acquired 2025	Matrix	Secondary Mineral(s)	From the collection of Tony Nickischer (Excalibur Minerals). These highly unusual, pure celestine (no Sr) crystals were collected from the haulage level about 80 feet below the main level some 300-400 feet east of the shaft on the Gordonsville Mine in 1991. The material was SEM-confirmed a few years later but never offered, and we just uncovered A few attractive TN-minatures in our warehouse. The celestine is transparent, pale yellow and bladed (see our image in Mindat), and some are associated with small, transparent, water-clear calcites. Rare at the locality (with very precise pinpointing of the occurrence). Sizes range from 2.5cm to 4cm. List alternates!	4258	Hardness	Streak	Specific Gravity	Crystal Form(s)
Zvyaginite	Formula	/Images/picture.jpg	Pegmatite No. 71, Malyi Punkaruaiv Mountain, Lovozersky District, Murmansk Oblast, Russia	acquired 2025	ussingite/microclien	Secondary Mineral(s)	Type Locality specimen for Zvyaginite. From the collection of Tony Nickischer (Excalibur Minerals), #10. Another rare Lovozero species, here as colorless, pearly white to pale brown lamellae to several millimeters, likely as pseudomorphs after crystals of vuonnemite or epistolite, all embedded in ussingite/microclien matrix. Formula:NaZnNb2Ti[Si2O7]2O(OH,F03(H2O)4+x (x<1), triclinic, IMA #2013-071. Author's material, named for Russian crystallographer and chemist Professor Boris Borisovich Zvyagin (1921-2002) who was a pioneer in the field of electron diffraction studies of minerals with layered structures. A new member of the epistolite group, all specimens with arrows and ranging 1.5-2cm across. List alternates!	4259	Hardness	Streak	Specific Gravity	Crystal Form(s)
Wolsendorfite	Formula	/Images/picture.jpg	Wolsendorf, Schwarzach bei Nabburg, Schwandorf District, Wölsendorf fluorite mining district, Upper Palatinate, Bavaria, Germany	acquired 2025	Uraninite/td>	Secondary Mineral(s)	Type Locality specimen for Wolsendorfite. From the collection of Tony Nickischer (Excalibur Minerals). Dark orange-red masses of this unusual uranium mineral richly scattered on matrix, often associated with uraninite and possibly fourmarierite and other species. Classic, type locality material, TN sizes to 1.2cm.	4260	Hardness	Streak	Specific Gravity	Crystal Form(s)
Cornwallite	Formula	/Images/picture.jpg	Rhyolite Pass, Luning, Fitting Mining District, Mineral County, Nevada	acquired 2025	Matrix	Gilmarite	From the collection of Tony Nickischer (Excalibur Minerals). Tiny green balls of cornwallite sparsely scattered in vugs, typically sitting among micro quartz crystals. The rhyolitic matrix has numerous vugs present, and these could be trimmed further to potentially reveal other micro species. Small TNs averaging about 2cm.	4261	Hardness	Streak	Specific Gravity	Crystal Form(s)
Cornwallite	Formula	/Images/picture.jpg	Rhyolite Pass, Luning, Fitting Mining District, Mineral County, Nevada	acquired 2025	Matrix	Secondary Mineral(s)	From the collection of Tony Nickischer (Excalibur Minerals). Tiny green balls of cornwallite sparsely scattered in vugs, typically sitting among micro quartz crystals. The rhyolitic matrix has numerous vugs present, and these could be trimmed further to potentially reveal other micro species. Small TNs averaging about 2cm.	4262	Hardness	Streak	Specific Gravity	Crystal Form(s)
GYPSUM with COPPER inclusions	Formula	/Images/picture.jpg	Mission Mine (Mission underground mine), Mission complex, San Xavier, Pima Mining District, Sierrita Mountains, Pima County, Arizona	acquired 2025	Matrix	Secondary Mineral(s)	From the collection of Tony Nickischer (Excalibur Minerals). Old material recently uncovered in our warehouse, these are clear "selenite" variety gypsum showing metallic, arborescent metallic copper branches scattered throughout the gypsum, making for very interesting and unusual inclusion specimens! The best way to expose the elaborate, included copper dendrites is to carefully split the gypsum along a cleavage plane. Only a couple dozen specimens on hand, most in the 2cm to 5cm size range. Nice!	4263	Hardness	Streak	Specific Gravity	Crystal Form(s)
Isoferroplatinum	Formula		Uryu River, Hokkaido, Japan	acquired 2025	Matrix	Secondary Mineral(s)	From the collection of Tony Nickischer (Excalibur Minerals). Extremely small, analyzed silvery metallic alluvial grains of isoferroplatinum without matrix, here offered as single tiny specks in a glass capillary tube and accompanied by our chemical analysis! From rarely offered locality material.	4264	Hardness	Streak	Specific Gravity	Crystal Form(s)
GYPSUM with COPPER inclusions	Formula	/Images/picture.jpg	Mission Mine (Mission underground mine), Mission complex, San Xavier, Pima Mining District, Sierrita Mountains, Pima County, Arizona	acquired 2025	Matrix	Secondary Mineral(s)	From the collection of Tony Nickischer (Excalibur Minerals). Old material recently uncovered in our warehouse, these are clear "selenite" variety gypsum showing metallic, arborescent metallic copper branches scattered throughout the gypsum, making for very interesting and unusual inclusion specimens! The best way to expose the elaborate, included copper dendrites is to carefully split the gypsum along a cleavage plane. Only a couple dozen specimens on hand, most in the 2cm to 5cm size range. Nice!	4265	Hardness	Streak	Specific Gravity	Crystal Form(s)
Pyrite	Formula	/Images/picture.jpg	Peru	acquired 2025	Matrix	Secondary Mineral(s)	From the collection of Matthew Osman. From the collection of Joel Vicary.	4266	Hardness	Streak	Specific Gravity	Crystal Form(s)
Colemanite	Formula	/Images/picture.jpg	Boron, Kern County, California	acquired 2025	Limestone	Secondary Mineral(s)	From the collection of Matthew Osman. From the collection of Joel Vicary.	4267	Hardness	Streak	Specific Gravity	Crystal Form(s)
Titanite	Formula	/Images/picture.jpg	Ontario, Canada	gifted 2025	Matrix	Secondary Mineral(s)	From the collection of Bob Sinke.	4268	Hardness	Streak	Specific Gravity	Crystal Form(s)
Titanite	Formula	/Images/picture.jpg	Ontario, Canada	gifted 2025	Matrix	Secondary Mineral(s)	From the collection of Bob Sinke.	4269	Hardness	Streak	Specific Gravity	Crystal Form(s)
Vitimite	Formula	/Images/picture.jpg	Solongo B deposit, Ozernoe ore cluster, Yeravninsky District, Buryatia, Russia	acquired 2025	Matrix	Secondary Mineral(s)	A Type Locality specimen for Vitimite. From the collection of Tony Nickischer (Excalibur Minerals). This rare mineral, first offered by us in 2002, occurs as white, somewhat sectile masses in veinlets in calcite with other species, here as relatively pure extracted masses with minor matrix. Formula: Ca6B14O19[SO4](OH)14*5H2O - monoclinic. Type locality material and from the co-type specimen drill core, IMA #2001-057, only a few small (<1mm) pure samples. Rare stuff!	4270	Hardness	Streak	Specific Gravity	Crystal Form(s)
Riversideite	Formula	/Images/picture.jpg	Crestmore quarries, Crestmore, Jurupa Valley, Riverside County, California	acquired 2025	Vesuvianite	Secondary Mineral(s)	A Type Locality specimen for Riversideite. From the collection of Tony Nickischer (Excalibur Minerals). Another mineral first found at this prolific locality, riversideite occurs as opaque white fibrous masses and veinlets running through pale green vesuvianite rock, possibly associated with other calcium silicates. Typical representative material, and fairly rich, in sizes from 2cm to 8cm.	4271	Hardness	Streak	Specific Gravity	Crystal Form(s)
Warwickite	Formula	/Images/picture.jpg	Warwick, Town of Warwick, Orange County, New York	gifted 2025	white Franklin Marble	Secondary Mineral(s)	This is a Type Locality specimen for Warwickite. From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske (#913). From the collection of Dr. Petr Cerny.	4272	Hardness	Streak	Specific Gravity	Crystal Form(s)
Wodginite	Formula	/Images/picture.jpg	Tanco Mine (Tanco Pegmatite), Bernic Lake, Lac-du-Bonnet area, Manitoba, Canada	gifted 2025	Quartz	Lithian Muscovite	From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske (#913). From the collection of Dr. Paul B. Moore.	4273	Hardness	Streak	Specific Gravity	Crystal Form(s)
Chondrodite	Formula	/Images/picture.jpg	Cotopaxi, Cotopaxi Mining District, Fremont County, Colorado	gifted 2025	Matrix	Galena	From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske (#Eh149).	4274	Hardness	Streak	Specific Gravity	Crystal Form(s)
Prosopite (bladed)	Formula	/Images/picture.jpg	Goldie carbonatite, Fremont County, Colorado	gifted 2025	Matrix	Pachnolite (white), Weberite (reddish), Calcite	From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske.	4275	Hardness	Streak	Specific Gravity	Crystal Form(s)
Collinsite	Formula	/Images/picture.jpg	Francois Lake, Omineca Mining Division, British Columbia, Canada	gifted 2025	Matrix	Petroleum var. Bitumen	This is a Type Locality specimen for Collinsite. From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske (#988). Collected by Hart Bichler.	4276	Hardness	Streak	Specific Gravity	Crystal Form(s)
Muscovite	Formula	/Images/picture.jpg	Black Hills, SD	Collected 2025, Gifted 2025	Matrix	Secondary Mineral(s)	Collected by David Lehker.	4277	Hardness	Streak	Specific Gravity	Crystal Form(s)
Babingtonite	Formula	/Images/picture.jpg	Deerfield, Franklin County, Massachusetts	Gifted 2025	Matrix	Baryte, Calcite	From the collection of David Lehker. Collected by Steve Garza.	4278	Hardness	Streak	Specific Gravity	Crystal Form(s)
Vauquelinite	Pb₂Cu(PO₄)(CrO₄)(OH)	/Images/picture.jpg	Le Cantonnier Vein, Nontron Dordogne, Aquitaine, France	acquired 2008	Quartz	Secondary Mineral(s)	From the collection of Wild About Rocks, #112522. Fragment from #2571 after it was dropped.	4279	Hardness	Streak	Specific Gravity	Crystal Form(s)
Vauquelinite	Pb₂Cu(PO₄)(CrO₄)(OH)	/Images/picture.jpg	Le Cantonnier Vein, Nontron Dordogne, Aquitaine, France	acquired 2008	Quartz	Secondary Mineral(s)	From the collection of Wild About Rocks, #112522. Fragment from #2571 after it was dropped.	4280	Hardness	Streak	Specific Gravity	Crystal Form(s)
Dundasite	Formula	/Images/picture.jpg	Tip Top Tunnel, Magdalena Mining District, Socorro County, New Mexico	acquired 2020	Matrix	Secondary Mineral(s)	From the collection of Jim Daly (Sauktown Sales, #4737).	4281	Hardness	Streak	Specific Gravity	Crystal Form(s)
Sorbyite	Formula	/Images/picture.jpg	Candelaria Mining District, Mineral County, Nevada	Collected before 2006, acquired 2025	Quartz	Secondary Mineral(s) probable	From the collection of Tony Nickischer (Excalibur Minerals). From the collection of Dr. Sidney Williams. SORBYITE- Candelaria, Mineral Co., Nevada Grey metallic masses of sorbyite disseminated in greyish white quartz matrix, these from X-rayed material by Dr. Sidney Williams. Probe work has found much of this material to be a complex mixture containing other sulfides, confirmed by the complex XRD results as well. Moderately rare and well represented in these old specimens from 2cm to 6cm and one large 9x7cm specimen.	4282	Hardness	Streak	Specific Gravity	Crystal Form(s)
Ashcroftine-(Y)	Formula	/Images/picture.jpg	Narssarssuk pegmatite, Narsaarsuk Plateau, Igaliku, Kujalleq, Greenland	acquired 2025	Aegirine	Secondary Mineral(s) not identified	A Type Locality specimen for Ashcroftine-(Y). From the collection of Tony Nickischer (Excalibur Minerals). ASHCROFTINE-(Y)- Narsaarsuk, Igaliku, Kujalleq, Greenland From the type locality for the species, ashcroftine-(Y) presents as tiny white to pale pinkish silky masses sparsely scattered on dark, aegirine-rich matrix. This classic locality offers over 65 different species (13 type localities), and specimens of the mineral are rare here. Only three TNs available, sizes average 2.5cm.	4283	Hardness	Streak	Specific Gravity	Crystal Form(s)
Cyrilovite	Formula	/Images/picture.jpg	Eduardo claim, Barra do Cuieté, Conselheiro Pena, Minas Gerais, Brazil	acquired 2025	Albite	Variscite, unidentified Secondary Mineral(s) present	From the collection of Tony Nickischer (Excalibur Minerals). CYRILOVITE pseudo @ WHITEITE- Lavra do Eduardo, Galileia, M.G., Brazil > Exceptional micros of bright yellow cyrilovite richly scattered on matrix, forming sharp pseudomorphs after tabular whiteite crystals! Some specimens associated with bright pinkish ferrian variscite, occasionally with other species as well on albite matrix. Excellent phosphate assemblage specimens and unusual pseudomorphs with fine micro potential, all mounted in standard TN boxes and ranging from about 2cm to 2.5cm. The Eduardo pegmatite mine (“Lavra do Eduardo,” in Portuguese), listed in the literture as near Boa Vista creek, in the Conselheiro Pena municipality, appears to be the Eduardo claim, Barra do Cuieté, Conselheiro Pena, Minas Gerais, Brazil on MinDat; Galileia, M.G., Brazil is North of this locality within Conselheiro Pena. Before being known as the Eduardo claim, it was called the Córrego Boa Vista mine.	4284	Hardness	Streak	Specific Gravity	Crystal Form(s)
Gadolinite-(Y)	Formula		Hidra (Hittero), Flekkefjord, Agder, Norway	acquired 2025	Matrix	Muscovite	From the collection of Tony Nickischer (Excalibur Minerals). From the collection of Wards Natural Science. GADOLINITE-(Y)- Hidra (Hittero), Flekkefjord, Agder, Norway Old material originally collected for Wards Natural Science, this material is dark, brownish black, glassy masses of analyzed gadolinite-(Y) largely comprising matrix. Submicroscopic intergrowths of other REE minerals is likely in this older material, specimen sizes ranging from 2cm to 4cm, a few in the 5cm-6cm size range, supplied with copy of our EDS spectra.	4285	Hardness	Streak	Specific Gravity	Crystal Form(s)
Fluor-Uvite	Formula		Brumado Mine, Bahia, Brazil	Collected before 1994, acquired 2025	Matrix	Secondary Mineral(s)	From the collection of Tony Nickischer (Excalibur Minerals). From the collection of Dr. Richard V. Gaines. FLUOR-UVITE- Brumado Mine, Bahia, Brazil Frosted pale green to glassy, deep green single crystals of this tourmaline group mineral, all matrix-free. Most of these are somewhat flattened, hexagonal-outlined floater crystals. Both the F-dominant and OH- dominant species (the "oxy-uvite" not yet approved) occur here, and analyses are needed to differentiate between them. Neat specimens, originally obtained from Dr. Richard Gaines, then expected to be the (OH) species (someday), but those we have analyzed are definitely fluorine-rich. Sizes from 1 cm to 1.5cm. accompanied by a copy of our analytical work.	4286	Hardness	Streak	Specific Gravity	Crystal Form(s)
Fluorapophyllite-(K)	Formula	/Images/picture.jpg	Laurel Hill (Snake Hill), Secaucus, Hudson County, New Jersey	Collected before 1975, acquired 2025	greenish black Clinochlore var. Diabantite	Gmelinite, Stilbite-(Ca)	From the collection of Tony Nickischer (Excalibur Minerals). From the collection of Ken Wallings (Wallings Collection). FLUORAPOPHYLLITE-(K), DIABANTITE- Snake Hill, Secaucus, Hudson Co., New Jers Commonly known as "Laurel Hill", this locality has been obliterated and reclaimed, but in its heyday produced excellent zeolites and is also the type locality for petersite-(Y). This large, flat, triangular specimen shows one side richly covered with small (5mm) fluorapophyllite-(K) crystals with rarely interspersed, transparent gmelinite crsytals (needs scope), all overlaying dark greenish black clinochlore var: diabantite. The other side of this thin vein specimen is also fully covered, this side by stilbite-(Ca) crystals and druses. Ex-Wallings collection, collected over 50 years ago, size about 17x7x2 cm. One only!	4287	Hardness	Streak	Specific Gravity	Crystal Form(s)
Sphalerite	Formula	/Images/picture.jpg	Dundas mineral field, Zeehan mining district, West Coast municipality, Tasmania, Australia	gifted 2025	Dolostone	Secondary Mineral(s)	From the collection of Matthew Osman. From the collection of Joel Vicary. See #4319 for the other half of this specimen.	4288	Hardness	Streak	Specific Gravity	Crystal Form(s)
Palermoite	Formula	/Images/picture.jpg	Palermo No. 1 Mine, Groton, Grafton County, New Hampshire	gifted 2025	Matrix	Samuelsonite, Goyazite, Goedkenite (Goedkinite per label)	This is a Type Locality specimen for Palermoite, Samuelsonite, and Goedkenite. From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske.	4289	Hardness	Streak	Specific Gravity	Crystal Form(s)
Triplite	Formula	/Images/picture.jpg	Mica Lode Mine (Mica Hill Mine), Eight Mile Park Pegmatite Mining District, Fremont County, Colorado per MinDat Mica Lode, 8 Mile Park, Colorado per Garske	gifted 2025	Matrix	Muscovite	From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske (#EH52).	4290	Hardness	Streak	Specific Gravity	Crystal Form(s)
Citrine	Formula	/Images/picture.jpg	Fraser Quarry, Glamorgan Township, Highlands East Township, Haliburton County, Ontario, Canada per MinDat Frazer Nepheline Quarry, Bancroft per Vicary.	gifted 2025	nepheline pegmatite	Zircon	From the collection of Matthew Osman. From the collection of Joel Vicary.	4291	Hardness	Streak	Specific Gravity	Crystal Form(s)
Copiapite	Formula	/Images/picture.jpg	Dexter No. 7 Mine, Calf Mesa Mining District, Emery County, Utah per MinDat Dexter No. 7 Mine, San Rafael, Swell, Utah per Garske	gifted 2025	Matrix	Secondary Mineral(s)	From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske (#305).	4292	Hardness	Streak	Specific Gravity	Crystal Form(s)
Sarcopside	Formula	/Images/picture.jpg	Bull Moose Mine, Custer, Custer Mining District, Custer County, South Dakota	gifted 2025	Matrix	Secondary Mineral(s)	From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske (#753).	4293	Hardness	Streak	Specific Gravity	Crystal Form(s)
Mitridatite (green)	Formula	/Images/picture.jpg	Tip Top Mine, Fourmile, Custer Mining District, Custer County, South Dakota perMinDat Tip Top Mine, Custer Co., South Dakota per Garske	gifted 2025	Matrix	Rockbridgeite (fiberous)	From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske.	4294	Hardness	Streak	Specific Gravity	Crystal Form(s)
Hidalgoite	Formula	/Images/picture.jpg	Gold Hill Mine, Gold Hill, Gold Hill Mining District (Clifton Mining District), Tooele County, Utah	gifted 2025<	Matrix unidentified	Secondary Mineral(s) unidentified	From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske (#419). From the collection of Dr. John Clarkson.	4295	Hardness	Streak	Specific Gravity	Crystal Form(s)
Eucryptite	Formula	/Images/picture.jpg	Bikita pegmatite, Bikita District, Masvingo, Zimbabwe per MinDat Bikita, Rhodesia per Garske	gifted 2025	Matrix	Secondary Mineral(s)	From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske (#EH33).	4296	Hardness	Streak	Specific Gravity	Crystal Form(s)
Petalite	Formula	/Images/picture.jpg	Bikita pegmatite, Bikita District, Masvingo, Zimbabwe per MinDat Bikita, Rhodesia per Garske	gifted 2025	Matrix	Lepidolite	From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske (#EH17 per label, #68 on specimen).	4297	Hardness	Streak	Specific Gravity	Crystal Form(s)
Spurrite	Formula	/Images/picture.jpg	La Encantada mining district, Múzquiz Municipality, Coahuila, Mexico per MinDat Encantada dist., Coahuila, Mexico per Garske MinDat has to go to Coahuila, Mexico before Spurrite appears in the mineral list	gifted 2025	Matrix	Secondary Mineral(s)	From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske (#EH16 per label, #2A on specimen).	4298	Hardness	Streak	Specific Gravity	Crystal Form(s)
Bikitaite	Formula	/Images/picture.jpg	Bikita pegmatite, Bikita District, Masvingo, ZimbabweperMinDat Bikita, Rhodesia per Garske	gifted 2025	Matrix	Secondary Mineral(s)	From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske (#EH7).	4299	Hardness	Streak	Specific Gravity	Crystal Form(s)
Valleriite	Formula	/Images/picture.jpg	Loolekop pipe, Palabora Mine, Phalaborwa, Ba-Phalaborwa Local Municipality, Mopani District Municipality, Limpopo, South Africa per MinDat Palabora carbonatite, Loolekop, South Africa per Garske	gifted 2025	Calcite	Secondary Mineral(s)	From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske.	4300	Hardness	Streak	Specific Gravity	Crystal Form(s)
Haggite	Formula	/Images/picture.jpg	Runge Mine, Edgemont Uranium Mining District, Fall River County, South Dakota	gifted 2025	Sandstone/td>	Paramontroseite	From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske.	4301	Hardness	Streak	Specific Gravity	Crystal Form(s)
Whitlockite	Formula	/Images/picture.jpg	Palermo No. 1 Mine, Groton, Grafton County, New Hampshire per MinDat Palermo No. 1 Mine, North Groton, New Hampshire per Garske	gifted 2025	Matrix	Secondary Mineral(s)	This is a Type Locality specimen for Whitlockite. From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske (#486). From the collection of Dr. Paul B. Moore.	4302	Hardness	Streak	Specific Gravity	Crystal Form(s)
Graftonite	Formula	/Images/picture.jpg	Bull Moose Mine, Custer, Custer Mining District, Custer County, South Dakota	gifted 2025	Matrix	Quartz	From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske.	4303	Hardness	Streak	Specific Gravity	Crystal Form(s)
Pyrolusite	Formula	/Images/picture.jpg	Taylor Mine, Alberta, Baraga County, Michigan	Collected before 2013, acquired 2026	Matrix	Secondary Mineral(s)	From the collection of Tony Nickischer (Excalibur Minerals). From the collection of Dr. George Robinson. PYROLUSITE- Taylor Mine, Alberta, Baraga Co., Michigan > Excellent, silvery grey sprays of radiating pyrolusite crystals richly scattered on and protruding from seams in matrix, these rivaling the old Moroccan material of the 1970s. Obtained from the late Dr. George Robinson at the A.E. Seaman Museum, these are rather attractive for a typically ugly species, some are also rich examples with much micro potential, varying in size from about 3cm to large 9cm groups. Nice!	4304	Hardness	Streak	Specific Gravity	Crystal Form(s)
Silver Ore	Formula	/Images/picture.jpg	Silver Cliff Mine, Coleman Township, Cobalt area, Cobalt-Gowganda region, Timiskaming District, Ontario, Canada	Collected 1981, acquired 2026	Matrix	Calcite, Safflorite	From the collection of Tony Nickischer (Excalibur Minerals). Silver Ore- Silver Cliff Mine, Cobalt, Ontario, Canada > Some ugly ore samples from a locality closed in the early 1950s, the Silver Cliff Mine sported just a handful of species that included native silver, pyrargyrite, safflorite etc that produced over half a million ounces of silver during its short lifetime. While some of these minerals mat be present in these mine-run samples, we promise only dark greyish matrix with veins of calcite, tiny pyrite, chalcopyrite and likely safllorite when viewed under the 'scope. Collected off the dumps in 1981, these samples might show more when broken down and viewed under magnification, hence the inexpensive offer of 3cm to 8cm specimens.	4305	Hardness	Streak	Specific Gravity	Crystal Form(s)
Ailsa Craig Granite Drink Cube	Formula		Ailsa Craig, South Ayrshire, Scotland, UK	acquired 2026	Matrix	Secondary Mineral(s)	Acquired from Kays Curling. This giftware has been hand crafted in Scotland using the same type of granite that makes up the curling stones used in Milano Cortina 2026. NOTE: THIS GIFTWARE HAS NOT BEEN MADE FROM THE ACTUAL STONES USED AT MILANO CORTINA 2026. The granite is approximately 60 million years old and is sourced from the remote Scottish island, Ailsa Craig located 10 miles off the Ayrshire coast. Island is built mainly of arfvedsonite-aegirine microgranite, which is intruded by basic dikes. The island is famous for production of curling stones because microgranites are particularly tough and take a high polish. The stones were produced and exported from the quarry during 1890s, then closed and reopened in 1961. It proved to be uneconomic and closed again in 1973. Material is now taken occasionally to fulfil orders. Two Milano Cortina 2026 Granite Coasters and Four Drink Chill Cubes (Not made with the Olympic Curling Stones); half the order was donated to the Grand Rapids Public Museum.	4306	Hardness	Streak	Specific Gravity	Crystal Form(s)
Ailsa Craig Granite Drink Cube	Formula		Ailsa Craig, South Ayrshire, Scotland, UK	acquired 2026	Matrix	Secondary Mineral(s)	Acquired from Kays Curling. This giftware has been hand crafted in Scotland using the same type of granite that makes up the curling stones used in Milano Cortina 2026. NOTE: THIS GIFTWARE HAS NOT BEEN MADE FROM THE ACTUAL STONES USED AT MILANO CORTINA 2026. The granite is approximately 60 million years old and is sourced from the remote Scottish island, Ailsa Craig located 10 miles off the Ayrshire coast. Island is built mainly of arfvedsonite-aegirine microgranite, which is intruded by basic dikes. The island is famous for production of curling stones because microgranites are particularly tough and take a high polish. The stones were produced and exported from the quarry during 1890s, then closed and reopened in 1961. It proved to be uneconomic and closed again in 1973. Material is now taken occasionally to fulfil orders. Two Milano Cortina 2026 Granite Coasters and Four Drink Chill Cubes (Not made with the Olympic Curling Stones); half the order was donated to the Grand Rapids Public Museum.	4307	Hardness	Streak	Specific Gravity	Crystal Form(s)
Ailsa Craig Granite Coaster	Formula		Ailsa Craig, South Ayrshire, Scotland, UK	acquired 2026	Matrix	Secondary Mineral(s)	Acquired from Kays Curling. This giftware has been hand crafted in Scotland using the same type of granite that makes up the curling stones used in Milano Cortina 2026. NOTE: THIS GIFTWARE HAS NOT BEEN MADE FROM THE ACTUAL STONES USED AT MILANO CORTINA 2026. The granite is approximately 60 million years old and is sourced from the remote Scottish island, Ailsa Craig located 10 miles off the Ayrshire coast. Island is built mainly of arfvedsonite-aegirine microgranite, which is intruded by basic dikes. The island is famous for production of curling stones because microgranites are particularly tough and take a high polish. The stones were produced and exported from the quarry during 1890s, then closed and reopened in 1961. It proved to be uneconomic and closed again in 1973. Material is now taken occasionally to fulfil orders. Two Milano Cortina 2026 Granite Coasters and Four Drink Chill Cubes (Not made with the Olympic Curling Stones); half the order was donated to the Grand Rapids Public Museum.	4308	Hardness	Streak	Specific Gravity	Crystal Form(s)
Quartzite	Formula	/Images/picture.jpg	Plyground at IHM School, Grand Rapids, Michigan	Collected November 2025	Matrix	Secondary Mineral(s)	Collected by Alyssa Webb.	4309	Hardness	Streak	Specific Gravity	Crystal Form(s)
Crepidula aculeata (Gmelin, 1791)	Formula	/Images/picture.jpg	Hampton, VA	gifted 2025	Matrix	Secondary Mineral(s)	From the collection of Matthew Osman. From the collection of Joel Vicary. Label notes "Mio. Yorktown Fm.". spiny slippersnail In English, Synonym of Bostrycapulus aculeatus (Gmelin, 1791)	4310	Hardness	Streak	Specific Gravity	Crystal Form(s)
Melanterite	Formula	/Images/picture.jpg	Runge Mine, Edgemont Uranium Mining District, Fall River County, South Dakota	gifted 2025	Matrix	Secondary Mineral(s)	From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske (#785).	4311	Hardness	Streak	Specific Gravity	Crystal Form(s)
Pollucite	Formula	/Images/picture.jpg	Bikita pegmatite, Bikita District, Masvingo, Zimbabwe per MinDat Bikita, Rhodesia per Vicary	gifted 2025	Matrix	Secondary Mineral(s)	From the collection of Matthew Osman. From the collection of Joel Vicary. Specimen was numbered "97.".	4312	Hardness	Streak	Specific Gravity	Crystal Form(s)
Alluaudite	Formula	/Images/picture.jpg	Pleasant Valley Pegmatite, Fourmile, Custer Mining District, Custer County, South Dakota per MinDat Pleasant Valley Mine, Custer Co., South Dakota per Garske	gifted 2025	Matrix	Secondary Mineral(s)	From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske (#418).	4313	Hardness	Streak	Specific Gravity	Crystal Form(s)
Coffinite	Formula	/Images/picture.jpg	Waterson Mine, San Rafael River Mining District, Emery County, Utah per MinDat Waterson Shaft, Vanura Claim, Emery Co., Utah per Garske	gifted 2025	Sandstone	Uraninite	From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske.	4314	Hardness	Streak	Specific Gravity	Crystal Form(s)
Albite var. Clevelandite	Formula	/Images/picture.jpg	Harding Mine, Picuris District, Taos County, New Mexico per MinDat Harding Mine, Dixon, New Mexico per Vicary	gifted 2025	Dolostone	Secondary Mineral(s)	From the collection of Matthew Osman. From the collection of Joel Vicary.	4315	Hardness	Streak	Specific Gravity	Crystal Form(s)
Corkite	Formula	/Images/picture.jpg	Silver Queen Mine (New Silver Queen Mine), Deadwood, Galena Mining District, Lawrence County, South Dakota per MinDat Silver Queen Mine, Galena, South Dakota per Garske	gifted 2025	Matrix	Secondary Mineral(s)	From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske. See #4317 for the other half of this specimen.	4316	Hardness	Streak	Specific Gravity	Crystal Form(s)
Corkite	Formula	/Images/picture.jpg	Silver Queen Mine (New Silver Queen Mine), Deadwood, Galena Mining District, Lawrence County, South Dakota per MinDat Silver Queen Mine, Galena, South Dakota per Garske	gifted 2025	Matrix	Secondary Mineral(s)	From the collection of Matthew Osman. From the collection of Joel Vicary. From the collection of Dr. David H. Garske. See #4316 for the other half of this specimen.	4317	Hardness	Streak	Specific Gravity	Crystal Form(s)
Galena	Formula	/Images/picture.jpg	Gilman, Gilman Mining District (Battle Mountain Mining District; Red Cliff Mining District), Eagle County, Colorado	gifted 2025	Quart	Sphalerite var. Marmatite	From the collection of Matthew Osman. From the collection of Joel Vicary.	4318	Hardness	Streak	Specific Gravity	Crystal Form(s)
Sphalerite	Formula	/Images/picture.jpg	Dundas mineral field, Zeehan mining district, West Coast municipality, Tasmania, Australia	gifted 2025	Dolostone	Secondary Mineral(s)	From the collection of Matthew Osman. From the collection of Joel Vicary. See #4288 for the other half of this specimen.	4319	Hardness	Streak	Specific Gravity	Crystal Form(s)
Principal Mineral(s)	Formula	/Images/picture.jpg	Locality	When Collected	Matrix	Secondary Mineral(s)	Comments	4320	Hardness	Streak	Specific Gravity	Crystal Form(s)
Principal Mineral(s)	Formula	/Images/picture.jpg	Locality	When Collected	Matrix	Secondary Mineral(s)	Comments	4321	Hardness	Streak	Specific Gravity	Crystal Form(s)
Principal Mineral(s)	Formula	/Images/picture.jpg	Locality	When Collected	Matrix	Secondary Mineral(s)	Comments	4322	Hardness	Streak	Specific Gravity	Crystal Form(s)
Principal Mineral(s)	Formula	/Images/picture.jpg	Locality	When Collected	Matrix	Secondary Mineral(s)	Comments	4323	Hardness	Streak	Specific Gravity	Crystal Form(s)
Principal Mineral(s)	Formula	/Images/picture.jpg	Locality	When Collected	Matrix	Secondary Mineral(s)	Comments	4324	Hardness	Streak	Specific Gravity	Crystal Form(s)
Principal Mineral(s)	Formula	/Images/picture.jpg	Locality	When Collected	Matrix	Secondary Mineral(s)	Comments	4325	Hardness	Streak	Specific Gravity	Crystal Form(s)
Principal Mineral(s)	Formula	/Images/picture.jpg	Locality	When Collected	Matrix	Secondary Mineral(s)	Comments	4326	Hardness	Streak	Specific Gravity	Crystal Form(s)
Principal Mineral(s)	Formula	/Images/picture.jpg	Locality	When Collected	Matrix	Secondary Mineral(s)	Comments	4327	Hardness	Streak	Specific Gravity	Crystal Form(s)
Becquerelite	Formula	/Images/picture.jpg	Mi Vida Mine, Lisbon Valley Mining District, San Juan County, Utah	acquired 2026	Matrix not identified	Bayleyite, other Secondary Mineral(s) not identiofied	From the collection of Tony Nickischer (Excalibur Minerals). BECQUERELITE w/ BAILEYITE- Mi Vida Mine, San Juan Co., Utah Lightly scattered bright yellow druses of this moderately hot mineral on matrix. The locality was made famous by Charlie Steen in the early 1950s uranium boom. An excellent set of articles were written by the late Bob Werner and published in Mineral News in 2015 (Vol. 31 Nos. 10 and 11) about Steen and the mad uranium rush of the day in Utah and the Mi Vida Mine. The specimen is fairly hot, and the purported becquerelite (not analyzed by us) occurs as yellow crusts scattered on matrix with fluorescent bayleite and several unknowns, the piece measuring about 7x5x3 cm. One only! Mindat documents Becquerelite in the Lisbon Valley Mining District, but not from Mi Vida Mine. Label on specimen says Yel Flro EDS.	4328	Hardness	Streak	Specific Gravity	Crystal Form(s)
Turanite	Formula	/Images/picture.jpg	The Fish, Gibellini Mining District, Eureka County, Nevada	acquired 2026	Matrix	Secondary Mineral(s)	From the collection of Tony Nickischer (Excalibur Minerals). TURANITE- The Fish, Eureka Co., Nevada Minute yellow-green platy aggregates and crusts of turanite sparsely scattered over rock matrix, some occasionally with minor volborthite. Interesting and rarely offered, some with mediocre micro potential, matrix sizes from 2cm to 6cm. Mindat documents Turanite in Eureka County, in the Gibellini Mining District with a question mark, and not from The Fish.	4329	Hardness	Streak	Specific Gravity	Crystal Form(s)
Diamond	Formula	/Images/picture.jpg	Sao Luis river alluvials, Juína, Mato Grosso, Brazil	acquired 2026	Matrix	possible jeffbenite, breyerite and/or deltanitrogen	From the collection of Tony Nickischer (Excalibur Minerals). DIAMOND- San Luis River, Juina, Mato Grosso, Brazil The Sao Luis river alluvial placers produced diamonds with submicroscopic inclusions of three new minerals: jeffbenite, breyerite and deltanitrogen. All have been IMA-approved but are virtually impossible to confirm with sophisticated analytical techniques beyond our capabilities. We secured over a dozen included diamonds from this alluvial deposit, and all show inclusions at 20x or more, but we can only offer them as "just super-deep diamonds" as potential hosts for all (or none) of the new species. Colors range from colorless to slightly yellowish, weighing from 0.10 carats to over 0.60 carats. List alternates!	4330	Hardness	Streak	Specific Gravity	Crystal Form(s)
Westerveldite	Formula		Ilimaussaq complex, Kujalleq, Greenland	Collected 1977, acquired 2026	Matrix	Secondary Mineral(s)	From the collection of Tony Nickischer (Excalibur Minerals). From the collection of the Copenhagen University Mineral Museum. WESTERVELDITE- Ilimaussaq, Kujalleq, Greenland This uncommon mineral occurs here as small greyish black metallic grains sparsely scattered in rock matrix, from one of the few well known localities for the species. These were originally obtained in the late 1970's via exchange with Ole Petersen at the Copenhagen University mineral museum, specimens ranging in size from about 1.5cm, with a few larger to 5cm, all with copies of two exchange labels.	4331	Hardness	Streak	Specific Gravity	Crystal Form(s)
Tiemannite	Formula	/Images/picture.jpg	Deer Trail Mine, Mount Baldy-Ohio Mining District, Piute County, Utah	acquired 2026	Sandstone	Calcite	From the collection of Tony Nickischer (Excalibur Minerals). TIEMANNITE- Deer Trail Mine, nr. Marysvale, Utah This unusual mercury-selenide occus as greyish to black metallic masses sparsely scattered on calcite in pale greyish rock matrix, occasionally with other unidentified and included phases. Old material from this prolific Piute County area; sizes from 1.5cm to 5cm, depending on size and coverage. Mindat documents Tiemannite in the Mount Baldy-Ohio Mining District, but not at the Deer Trail Mine.	4332	Hardness	Streak	Specific Gravity	Crystal Form(s)
Wermlandite	Formula	/Images/picture.jpg	220 m Level, Langban Mine, Langban Ore District, Filipstad, Varmland County, Sweden	When Collected	Calcite	Secondary Mineral unidentified	From the collection of Tony Nickischer (Excalibur Minerals). WERMLANDITE- 220 m Level, Langban, Varmland, Sweden Several exposed vugs in massive white calcite show tiny, greyish-green platelets of wermlandite crystals scattered about. From the type locality, it is unusual to have precise mine level data on Langban material, and these are available as small fragments in a vial, TNs, and a few slightly larger matrix specimens. This is a Type Locality specimen for Wermlandite.	4333	Hardness	Streak	Specific Gravity	Crystal Form(s)
Erythrosiderite	Formula	/Images/picture.jpg	Kopeysk, Chelyabinsk Oblast, Russia	Collected before 2001, acquired 2026	Matrix	Secondary Mineral(s)	From the collection of Tony Nickischer (Excalibur Minerals). From the collection of Forrest "Boots" Cureton. ERYTHROSIDERITE- Kopeysk, Chelyabinsk Oblast, Urals, Russia Deep orange to reddish crusty aggregates of this rare mineral scattered on matrix or as small amounts of relatively pure masses in a glass vial. Old Cureton stock from 2001, horrible stuff that eats your white cardboard boxes, small masses in 3cm glass vials; matrix samples from about 1cm to 2cm.	4334	Hardness	Streak	Specific Gravity	Crystal Form(s)
Chapmanite	Formula		Smilkov, Benešov District, Central Bohemian Region, Czech Republic	acquired 2026	Matrix	Secondary Mineral(s)	From the collection of Tony Nickischer (Excalibur Minerals). CHAPMANITE- Smilkov, nr. Votice, Bohemia, Czech Republic Light olive to yellow green films of chapmanite richly coating one surface of the matrix from this famous locality but small. Perhaps its only claim to mineralogical fame, this small village of about 300 inhabitants lies due south of Prague and was widely collected by Czech geologists and mineralogists. Specimen size is a generous but thin 6x4cm, with Czech National Museum label! One only. Specimen was numbered 724 with a cloth tape label.	4335	Hardness	Streak	Specific Gravity	Crystal Form(s)
Principal Mineral(s)	Formula	/Images/picture.jpg	Locality	When Collected	Matrix	Secondary Mineral(s)	Comments	4336	Hardness	Streak	Specific Gravity	Crystal Form(s)
Principal Mineral(s)	Formula	/Images/picture.jpg	Locality	When Collected	Matrix	Secondary Mineral(s)	Comments	4337	Hardness	Streak	Specific Gravity	Crystal Form(s)
Principal Mineral(s)	Formula	/Images/picture.jpg	Locality	When Collected	Matrix	Secondary Mineral(s)	Comments	4338	Hardness	Streak	Specific Gravity	Crystal Form(s)
Principal Mineral(s)	Formula	/Images/picture.jpg	Locality	When Collected	Matrix	Secondary Mineral(s)	Comments	4339	Hardness	Streak	Specific Gravity	Crystal Form(s)
Principal Mineral(s)	Formula	/Images/picture.jpg	Locality	When Collected	Matrix	Secondary Mineral(s)	Comments	4340	Hardness	Streak	Specific Gravity	Crystal Form(s)
Principal Mineral(s)	Formula	/Images/picture.jpg	Locality	When Collected	Matrix	Secondary Mineral(s)	Comments	4341	Hardness	Streak	Specific Gravity	Crystal Form(s)
Principal Mineral(s)	Formula	/Images/picture.jpg	Locality	When Collected	Matrix	Secondary Mineral(s)	Comments	4342	Hardness	Streak	Specific Gravity	Crystal Form(s)
Principal Mineral(s)	Formula	/Images/picture.jpg	Locality	When Collected	Matrix	Secondary Mineral(s)	Comments	4343	Hardness	Streak	Specific Gravity	Crystal Form(s)
Principal Mineral(s)	Formula	/Images/picture.jpg	Locality	When Collected	Matrix	Secondary Mineral(s)	Comments	4344	Hardness	Streak	Specific Gravity	Crystal Form(s)
Principal Mineral(s)	Formula	/Images/picture.jpg	Locality	When Collected	Matrix	Secondary Mineral(s)	Comments	4345 4346 4347 4348 4349 4350 4351 4352 4353 4354 4355 4356 4357 4358 4359 4360 4361 4362 4363 4364 4365 4366 4367 4368 4369 4370 4371 4372 4373 4374 4375 4376 4377 4378 4379 4380 4381 4382 4383 4384 4385 4386 4387 4388 4389 4390 4391 4392 4393 4394 4395 4396 4397 4398 4399 4400 4401 4402 4403 4404 4405 4406 4407 4408 4409 4410 4411 4412 4413 4414 4415 4416 4417 4418 4419 4420 4421 4422 4423 4424 4425 4426 4427 4428 4429 4430 4431 4432 4433 4434 4435 4436 4437 4438 4439 4440 4441 4442 4443 4444 4445 4446 4447 4448 4449 4450 4451 4452 4453 4454 4455 4456 4457 4458 4459 4460 4461 4462 4463 4464 4465 4466 4467 4468 4469 4470 4471 4472 4473
Silver	Formula	/Images/4474.jpg	Grube Himmmelsfahrst (Himmelfurst Mine), Saxon, Freiberg Germany	Acquired from Caleb Simkoff in 2001, originally collected in 1835	None	None	0.9 cms X 1.2 cms X 0.7 cms	#4474	Hardness	Streak	Specific Gravity	Crystal Form(s)
Principal Mineral(s)	Formula	/Images/picture.jpg	Locality	When Collected	Matrix	Secondary Mineral(s)	Comments	4475 4476 4477 4478 4479 4480 4481 4482 4483 4484 4485 4486 4487 4488 4489 4490 4491 4492 4493 4494 4495 4496 4497 4498 4499	Hardness	Streak	Specific Gravity	Crystal Form(s)
Principal Mineral(s)	Formula		Locality	When Collected	Matrix	Secondary Mineral(s)	Comments	Reference	Hardness	Streak	Specific Gravity	Crystal Form(s)

Someday I hope to have my entire collection posted here. Until then, I hope you enjoy what I have posted so far. Come back again as I plan to update my catalog pages monthly.

Page A: Magnificent Obsessions Collection

Page B: Magnificent Obsessions Collection

Index by Mineral Name

Index by Mineral Type

Native Elements

Sulfides, Arsenides, Tellurides

Oxides

Halides

Carbonates

Nitrates and Borates

Sulfates

Phosphates, Arsenates, Vanadates, Chromates, and Uranates

Tungstates, Wolframates, and Molybdates

Silica Group (open network)

Tectosilicates (framework structures)

Phyllosilicates (sheet structures from sharing three oxygen)

Inosilicates (chain silicates)

Cyclosilicates (a ring structure)

Sorosilicates (two tetrahedra share one oxygen)

Nesosilicates (no direct sharing between tetrahedra)

Complex Silicates (share two or more of the other forms)

Organic and Odd/Exception Minerals

Numerical Index; 0000-0249

Numerical Index; 0250-0449

Numerical Index; 0500-0749

Numerical Index; 0750-0999

Numerical Index; 1000-1249

Numerical Index; 1250-1499

Numerical Index; 1500-1749

Numerical Index; 1750-1999

Numerical Index; 2000-2249

Numerical Index; 2250-2499

Numerical Index; 2500-2749

Numerical Index; 2750-2999

Numerical Index; 3000-3249

Numerical Index; 3250-3499

Numerical Index; 3500-3749

Numerical Index; 3750-3999

Numerical Index; 4000-4249

Numerical Index; 4250-4499

Numerical Index; 4500-4749

Numerical Index; 5000-5249

Numerical Index; 5250-5499

Numerical Index; 6250-6499

Numerical Index; 8750-8999

Numerical Index; 9750-9999

Numerical Index; 12250-12499

Numerical Index; 12500-12749

Numerical Index; 13000-13249

Numerical Index; 80750-80999

Current date and time is Saturday, 02-May-2026 02:11:47 EDT and the Greenwich date and time is Saturday, 02-May-2026 06:11:47 GMT. You are viewing this page from 216.73.217.40 and are visitor number 5065. This page was first published on 1 April 2004 and was last updated on Wednesday, 29-Apr-2026 16:48:09 EDT.

You can return to The Tomaszewski Family Public Home Page, or visit my personal homepage for more Rockhounding information, or check out my collection of links for rockhounds, or read about Labeling and Cataloging Rocks, Minerals, and Fossils, or review some field trip reports, or learn how to make your own lapidary equipment, or send me Email at Kreigh@Tomaszewski.net

Selections from Kreigh Tomaszewski's Rock and Mineral Collection in Numerical Order 4250 - 4499

Selections from Kreigh Tomaszewski's Rock and Mineral Collection

Index by Mineral Type

Selections from Kreigh Tomaszewski's
Rock and Mineral Collection
in Numerical Order
4250 - 4499

Selections from Kreigh Tomaszewski's
Rock and Mineral Collection