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Ore Minerals

Wednesday, 29 June 2022 08:00 AM

Introducing the "Ore Minerals" gallery which is part of our Special Edition galleries. This gallery contains mineral specimens for sale including chalcopyrite, chromite, cinnabar, coloradoite, copper, and covellite and more from places like Equity mine, Bulkley Valley of the Northern Interior , British Columbia, Canada, Webster Chromite prospects, Jackson Co., North Carolina, United States, unknown mine, California, United States, Perseverance Gold mine, Kalgoorlie-Boulder, Western Australia, Australia, Keweenaw Co., Michigan, United States, and Summitville dist., Rio Grande Co., Colorado, United States.

SOLD

Chalcopyrite - 49105

Chalcopyrite - 49105

Chalcopyrite

- copper ore - #49105

Details
Data
Provenance
Resources

Locality: Equity mine, Bulkley Valley of the Northern Interior , British Columbia, Canada
Formula: Cu¹⁺Fe³⁺S₂
Availability: Sold
Size: 10 x 11.5 x 8 cm - Cabinet
Tagged: sulfide , copper , ore specimen

Chalcopyrite is the most widely occuring copper ore containing 35% copper. The Equity Silver mine was discovered in 1967 and was under production by 1980 and ceased in 1993. It is a high grade vein deposit and is currently under exploration by Equity Metals Corporation. This specimen is an impressive chunk of brassy gold Chalcopyrite.

Chalcopyrite

Formula: Cu¹⁺Fe³⁺S₂
Crystal System: Tetragonal
Crystal Habit: Euhedral Crystals, Striated, Druse
Cleavage: Indistinct, None, None
Luster: Metallic
Color: brass yellow, honey yellow
Streak: greenish black
Class: Tetragonal - Scalenohedral
Fracture: Brittle
Hardness: 3.5

Collection: Chris van Laer Collection

Mineralpedia: View Chalcopyrite
On Dakota Matrix: Previously Sold Chalcopyrite
On Dakota Matrix: Other Available Chalcopyrite
WebMineral: View Chalcopyrite
Mindat: View Chalcopyrite

SOLD

Chromite - BW58130

Chromite - BW58130

Chromite

- chromium ore - #BW58130

Details
Data
Provenance
Resources

Locality: Webster Chromite prospects, Jackson Co., North Carolina, United States
Formula: Fe²⁺Cr₂O₄
Availability: Sold
Size: 7 x 5 x 4 cm - Sm Cabinet
Tagged: ore specimen

A solid black granular & crystalline mass of Chromite ore with some alterations to Erythrite.

The USGS reports the following on chromium: Chromium is refined into ferrochromium used to produce stainless steel. South Africa is the leading chromite ore producer and China is the leading chromium -consuming country. South Africa and Kazakhstan hold about 95% of the world's chromium resources. The Stillwater complex in Montana is the U.S. resource base, although not currently producing chromium.

Widely used in chemicals, metals and refractory materials. Used to harden iron, nonferrous alloys and steel. The addition of 10% chromium also creates corrosion and oxidation resistant alloys such as stainless steel.

Chromite

Formula: Fe²⁺Cr₂O₄
Crystal System: Isometric
Crystal Habit: Massive - Granular, Granular, Nuggets
Cleavage: None, None, None
Luster: Metallic
Color: black, brownish black
Streak: brown
Class: Isometric - Hexoctahedral
Fracture: Uneven
Hardness: 5.5

Collection: Bill Wilson Collection

Mineralpedia: View Chromite
On Dakota Matrix: Previously Sold Chromite
On Dakota Matrix: Other Available Chromite
WebMineral: View Chromite
Mindat: View Chromite

SOLD

Cinnabar - 45914

Cinnabar - 45914

Cinnabar

- mercury ore - #45914

Details
Data
Provenance
Resources

Locality: unknown mine, California, United States
Formula: HgS
Availability: Sold
Size: 7.5 x 6 x 3 cm - Sm Cabinet
Tagged: sulfide , ore specimen

Red fine-grained Cinnabar on a vein of Pyrite and partially coated Pyrite.

Cinnabar

Formula: HgS
Crystal System: Trigonal
Crystal Habit: Druse, Disseminated, Massive
Cleavage: Perfect, None, None
Luster: Adamantine
Color: lead gray, brown, brown pink, vermilion, gray
Streak: bright red
Class: Trigonal - Trapezohedral
Fracture: Brittle - Sectile
Hardness: 2-2.5

Collection: Chris van Laer Collection

Mineralpedia: View Cinnabar
On Dakota Matrix: Previously Sold Cinnabar
On Dakota Matrix: Other Available Cinnabar
WebMineral: View Cinnabar
Mindat: View Cinnabar

SOLD

Coloradoite - 47888

Coloradoite - 47888

Coloradoite

- tellurium ore - #47888

Details
Data
Provenance
Resources

Locality: Perseverance Gold mine, Kalgoorlie-Boulder, Western Australia, Australia
Formula: HgTe
Availability: Sold
Size: 4 x 2 x 2 cm - Miniature
Tagged: ore specimen , tellurium
Special Info: EDS Confirmed

Great piece of tin-white to brilliant silver. EDS confirmed.

Coloradoite

Formula: HgTe
Crystal System: Isometric
Crystal Habit: Massive, Granular
Cleavage: None, None, None
Luster: Metallic
Color: grayish black, black
Streak: black
Class: Isometric - Hextetrahedral
Fracture: Conchoidal
Hardness: 2.5

Special Info: EDS Confirmed

Mineralpedia: View Coloradoite
On Dakota Matrix: Previously Sold Coloradoite
On Dakota Matrix: Other Available Coloradoite
WebMineral: View Coloradoite
Mindat: View Coloradoite

SOLD

Copper - 58549

Copper - 58549

Copper

- copper ore - #58549

Details
Data
Provenance
Resources

Locality: Keweenaw Co., Michigan, United States
Formula: Cu
Availability: Sold
Size: 11 x 8 x 7 cm - Cabinet
Tagged: ore specimen

Large heavy mass of native Copper in Quartz. There are no real crystals, but rather casts of Copper molded by the granular Quartz.

Copper

Formula: Cu
Crystal System: Isometric
Crystal Habit: Nodular, Arborescent
Cleavage: None, None, None
Luster: Metallic
Color: brown, copper red, light pink, red
Streak: rose
Class: Isometric - Hexoctahedral
Fracture: Hackly
Hardness: 2.5-3

Collection: Chris van Laer Collection

Mineralpedia: View Copper
On Dakota Matrix: Previously Sold Copper
On Dakota Matrix: Other Available Copper
WebMineral: View Copper
Mindat: View Copper

SOLD

Covellite - AH58555

Covellite - AH58555

Covellite

- copper ore - #AH58555

Details
Data
Provenance
Resources

Locality: Summitville dist., Rio Grande Co., Colorado, United States
Formula: CuS
Availability: Sold
Size: 7 x 4.5 x 3.5 cm - Sm Cabinet
Tagged: sulfide , copper , ore specimen

Flakes and crystal grains of ourpole Covellite throughout specimen.

Covellite

Formula: CuS
Crystal System: Hexagonal
Crystal Habit: Platy, Foliated
Cleavage: Perfect, None, None
Luster: Metallic
Color: indigo blue, light blue, dark blue, black
Streak: black gray
Class: Hexagonal - Dihexagonal Dipyramidal
Fracture: Brittle
Hardness: 1.5-2

Collection: Arnold G Hampson Collection

Mineralpedia: View Covellite
On Dakota Matrix: Previously Sold Covellite
On Dakota Matrix: Other Available Covellite
WebMineral: View Covellite
Mindat: View Covellite

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