Selections from Kreigh Tomaszewski's
Rock and Mineral Collection

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. Click on any image for a larger picture, and then use your browser Back button to return here.

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

Selections from Kreigh Tomaszewski's
Rock and Mineral Collection

Principal Mineral(s)	Formula		Locality	When Collected	Matrix	Secondary Mineral(s)	Comments	Reference	Hardness	Streak	Specific Gravity	Crystal Form(s)
Calcite	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	Mexico	acquired 1996 (from Edmund Scientific)	Matrix	Secondary Mineral(s)	Comments	#0192	Hardness	Streak	Specific Gravity	Crystal Form
Calcite	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	Canada	acquired 1996 (from Edmund Scientific)	Matrix	Secondary Mineral(s)	Comments	#0193	Hardness	Streak	Specific Gravity	Crystal Form
Calcite	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	California	acquired 1996 (from Edmund Scientific)	Matrix	Secondary Mineral(s)	Comments	#0194	Hardness	Streak	Specific Gravity	Crystal Form
Calcite	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	Mexico	acquired 1996 (from Edmund Scientific)	Matrix	Secondary Mineral(s)	Comments	#0195	Hardness	Streak	Specific Gravity	Crystal Form
Chalcocite		individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	Clark Mine, Copper Harbor, MI	1997		Chalcopyrite, Enargite?		#0163
Cristobalite		individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	California	acquired 1996 (from Edmund Scientific)	Obsidian			#0162
Hematite		individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	Lake Superior District			Quartz, Muscovite, Vivianite		#0164		red		botryoidal
Native Copper	Cu	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	Quincy Mine, Hancock, MI	1997		Chlorite		#0160
Rose Quartz		individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	South Dakota	acquired 1996 (from Edmund Scientific)	Quartz	micro fibers of dumortierite [Al3(BO3)(SiO4)3O3] give Rose Quartz its color and prevents the formation of crystals.		#0161				None (massive)
Ulexite	NaCaB5O9 8H2O	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	Death Valley, California	acquired 1997		Pale green and brown bands indicate the presence of two unknown minerals in this specimen.	Named this mineral in 1850 by James Dwight Dana after George Ludwig Ulex (1811-1833), the German chemist who discovered the mineral.	Reference #0205	2 1/2	white	1.9	Acicular
Uvarovite	Ca3Cr2Si3O12		Ural Mountians, Russia	Acquired 1999 (from Fossils Inc)	may be Chromite in Peridotite	Quartz	Named after Count S.S. Uvarov by G.H. Hess in 1832. The Count (1786-1855) was President of the Academy of St. Petersburg.	#0416,#0447	6 1/2 - 7 1/2	Colorless	3.8	dodecahedron, trapezohedron
Black Rutile	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	Bahia, Brazil	Acquired 1999, Pooh's Corner	Quartz	Secondary Mineral(s)	Comments	#0172	Hardness	Streak	Specific Gravity	Crystal Form
Golden Rutile in	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	Bahia, Brazil	Acquired 1999, Pooh's Corner	Quartz	Quartzite?	Clear quartz with edge of matrix - rutile radiating out of matrix.	#0173	Hardness	Streak	Specific Gravity	Crystal Form
Hornblende Pyroxene Diorite	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	Locality	acquired 1950s	Matrix	Secondary Mineral(s)	Comments	#0165	Hardness	Streak	Specific Gravity	Crystal Form
Quartz Sandstone	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	Munising Falls, Alger County, MI	1999 by Andy Tomaszewski	Matrix	Banded with brown and yellow layers	Comments	#0168	Hardness	Streak	Specific Gravity	Crystal Form
Heulandite	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	Silver Mtn., Houghton County, MI	1999 by Andy Tomaszewski	Matrix	Secondary Mineral(s)	Comments	#0167	Hardness	Streak	Specific Gravity	Crystal Form
Bornite	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	Iron Bridge, Ontario, Canada	1981	Chalcopyrite	Secondary Mineral(s)	Comments	#0169	Hardness	Streak	Specific Gravity	Crystal Form
Bornite	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	Iron Bridge, Ontario, Canada	1981	Chalcopyrite	Secondary Mineral(s)	Comments	#0223	Hardness	Streak	Specific Gravity	Crystal Form
Optical Quartz	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	Corning Glass Works, New York	acquired early 1960s	Matrix	Secondary Mineral(s)	Comments	#0166	Hardness	Streak	Specific Gravity	Crystal Form
Native Copper	Formula		Keweenaw Peninsula	acquired 1998	Calcite	Green tint to calcite suggests malachite or other copper compound	Comments	#0171	Hardness	Streak	Specific Gravity	Crystal Form
Calcite	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	Quincy Mine, Hancock, MI	1997	Keweenaw Lava	Native Copper, Cuprite, Malachite, Chlorite, Suiderite, Quartz	I think there may be a couple more minerals in this mixed up seam edge	#0174	Hardness	Streak	Specific Gravity	Crystal Form
Lake Superior Agate	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	underwater at Lake Superior shoreline by McClain State Park, near Hancock, MI	1997	Matrix	Secondary Mineral(s)	Comments	#0221, 0222	Hardness	Streak	Specific Gravity	Crystal Form
Pencil, Mass, Selenite	CaSO4 2H2O		Alabastine mine Grand Rapids, Michigan	1988	Matrix	Secondary Mineral(s)	Probably named for the Greek word gypsos meaning plaster. Gypsum mining in Grand Rapids started in the spring of 1843 when Richard E. Butterworth uncovered a layer of it while plowing. This turned into the Grand Rapids Gypsum Co. in 1860 (and bought by Domtar Industries Inc. in 1981), which is the oldest continuously operating gypsum mine in in the world. The Alabastine mine was a competetor who's output was used to make sparkling/glittering alabastine paint. Traded to Gary Brown February 2000	Reference #0289	Hardness	Streak	Specific Gravity	Crystal Form(s)
Pencil, Mass, Honey Selenite	CaSO4 2H2O		Alabastine mine Grand Rapids, Michigan	1988	Matrix	Secondary Mineral(s)	Probably named for the Greek word gypsos meaning plaster. Gypsum mining in Grand Rapids started in the spring of 1843 when Richard E. Butterworth uncovered a layer of it while plowing. This turned into the Grand Rapids Gypsum Co. in 1860 (and bought by Domtar Industries Inc. in 1981), which is the oldest continuously operating gypsum mine in in the world. The Alabastine mine was a competetor who's output was used to make sparkling/glittering alabastine paint. Traded to Gary Brown February 2000	Reference #0289	Hardness	Streak	Specific Gravity	Crystal Form(s)
Lake Superior Agate	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	offshore by Agate Beach, Fort Wilkins State Park, near Copper Harbor, MI	1997	Matrix	Secondary Mineral(s)	Comments	#0232	Hardness	Streak	Specific Gravity	Crystal Form
Float Copper	Cu	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	Lake Superior shoreline by McMlain State Park near Hancock, MI.	1997	Matrix	malachite crust and two crystals of martite.	Collected by Monica Tomaszewski within seconds of my telling her about what I was searching for (and I didn't find any).	#0234	Hardness	Streak	Specific Gravity	Crystal Form
Chalcopyrite	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	Iron Bridge, Ontario, Canada	1984	Calcite and Quartz	Bornite, Pentlandite	I think there are a couple unidentified minerals in this (and some of the calcite crystals may be something else because they look like a feldspar)	#0175	Hardness	Streak	Specific Gravity	Crystal Form
Jade	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	China	acquired 1980	Matrix	Secondary Mineral(s)	Green moss jade	#0176	Hardness	Streak	Specific Gravity	Crystal Form
Kyanite	Formula		Minas Gerais, Brazil	acquired 1999	Quartz	Citrine, rutile?	Comments	#0259	Hardness	Streak	Specific Gravity	Crystal Form(s)
Jade	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	China	acquired 1980	Matrix	Secondary Mineral(s)	Green moss jade	#0177	Hardness	Streak	Specific Gravity	Crystal Form
Prehnite, Calcite, Cuprite	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	Quincy Mine, Hancock, MI	1997	Keweenaw Lava	Gypsum, Copper, Olivine	At least one more unidentified mineral	#0178	Hardness	Streak	Specific Gravity	Crystal Form
Granite	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	Grand Rapids	1996	Matrix	Secondary Mineral(s)	This glacial gravel stone was heart shaped when my daughter Kalinda Tomaszewski found it. She asked me to tumble polish it, which I did. Much later I received it back as a present.	#0179	Hardness	Streak	Specific Gravity	Crystal Form
Thomsonite	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	offshore by Agate Beach, Fort Wilkins State Park, near Copper Harbor, MI	1997	Keweenaw Lava	Several unidentified Secondary Minerals in vugs in the matrix	Comments	#0180	Hardness	Streak	Specific Gravity	Crystal Form
Thomsonite	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	offshore by Agate Beach, Fort Wilkins State Park, near Copper Harbor, MI	1997	Keweenaw Lava	Several unidentified Secondary Minerals in vugs in the matrix	Comments	#0181	Hardness	Streak	Specific Gravity	Crystal Form
Thomsonite	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	offshore by Agate Beach, Fort Wilkins State Park, near Copper Harbor, MI	1997	Keweenaw Lava	Several unidentified Secondary Minerals in vugs in the matrix	Comments	#0182	Hardness	Streak	Specific Gravity	Crystal Form
Thomsonite	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	Keweenaw Peninsula	acquired in 1997 from Seaman Mineral Museum, Houghton, MI	None		Comments	#0183	Hardness	Streak	Specific Gravity	Crystal Form
Thomsonite	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	Keweenaw Peninsula	acquired in 1997 from Seaman Mineral Museum, Houghton, MI	None		Comments	#0184	Hardness	Streak	Specific Gravity	Crystal Form
Bloodstone	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	Locality	Acquired 1981	Matrix	Secondary Mineral(s)	Comments	#0185	Hardness	Streak	Specific Gravity	Crystal Form
Bloodstone	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	Locality	acquired 1981	Matrix	Secondary Mineral(s)	Comments	#0186	Hardness	Streak	Specific Gravity	Crystal Form
Fluorite	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	Mexico	acquired 1996 (from Edmund Scientific)	Matrix	Secondary Mineral(s)	Comments	#0187	Hardness	Streak	Specific Gravity	Crystal Form
Fluorite	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	Mexico	acquired 1996 (from Edmund Scientific)	Matrix	Secondary Mineral(s)	Comments	#0188	Hardness	Streak	Specific Gravity	Crystal Form
Conichalcite	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	Utah	acquired 1996 (from Edmund Scientific)	Matrix	Secondary Mineral(s)	Comments	#0189	Hardness	Streak	Specific Gravity	Crystal Form
Calcite	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	Mexico	acquired 1996 (from Edmund Scientific)	Matrix	Secondary Mineral(s)	Comments	#0190	Hardness	Streak	Specific Gravity	Crystal Form
Calcite	Formula	individual specimen picture not yet available this specimen may be included in the group pictures at the beginning and end of this section	Mexico	acquired 1996 (from Edmund Scientific)	Matrix	Secondary Mineral(s)	Comments	#0191	Hardness	Streak	Specific Gravity	Crystal Form
Principal Mineral(s)	Formula		Locality	When Collected	Matrix	Secondary Mineral(s)	Comments	Reference	Hardness	Streak	Specific Gravity	Crystal Form(s)

Current date and time is Saturday, 23-Nov-2024 19:14:28 EST and the Greenwich date and time is Sunday, 24-Nov-2024 00:14:28 GMT. You are viewing this page from 18.224.65.198 and are visitor number 15898. This page was first published on 1 September 1998 and was last updated on Friday, 02-Sep-2022 18:42:17 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