Mineral Specimen and Product Inventory Search
- Availability
- Sold
- Featured
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- Locality
- Uchucchacua mine, Oyon prov., Lima dept., Peru
- Formula
- Mn2+S
- Size
- 6 x 4 x 3 cm - Sm Cabinet
- Tagged
- ore mineral, sulfide
Alabandite is not the typical manganese ore. It usually does not occur in minable quantities. However, Alabandite may be in large quantities in epithermal polymetallic sulfide vein and also especially in low-temperature manganese deposits.
This specimen contains partial dull black crystals to 1.4cm.
- Availability
- Sold
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- Locality
- Wessels mine, Hotazel, Kalahari Mn fields, Northern Cape Province, South Africa
- Formula
- Mn3+2O3
- Size
- 5 x 4 x 3 cm - Miniature
- Tagged
- ore mineral
This is a small chuck of shiny black and brittle Bixbyite, an ore of Manganese.
- Availability
- Available
- Price
- $55.00
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- Locality
- Kamfundwa mine, Kambove dist., Katanga, Democratic Republic of Congo
- Formula
- Cu1+Co2S4
- Size
- 7.5 x 5 x 4 cm - Sm Cabinet
- Tagged
- ore mineral, sulfide, copper
Brilliant crystals of Carrollite. The largest crysatl is 8mm and the smaller is 3mm. Much of the Carrolitte occurs as vein fillings in Calcite.
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- Sold
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- Locality
- Tyrone mine, Grant Co., New Mexico, United States
- Formula
- Cu1+Fe3+S2
- Size
- 9 x 6 x 4 cm - Sm Cabinet
- Tagged
- ore mineral, sulfide, copper
Chalcopyrite is one of the most important and common ores of Copper. It contains about 34% Copper. Like this specimen it exhibits a bright goldish color when fresh and can be iridescent upon long exposure to air. Chalcoppyrite can alter to Covellite along fractures. Shown together with Pyrite, it is easy to distinguish the two apart. Pyrite will be a lesser gold color. In fact it can be confused with Gold when in small grains in matrix. However a little scratch test with a blade will show that Chalcopyrite is brittle and Gold is malleable.
This chunk of Copper ore contains about 60% Chalcopyrite and 20-30% Magnetite (glossy black grains). Knowing that the specimen contains Magnetite (with a magnet), gives a clue to the identity of Chalcopyrite since both contain Iron.
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- Sold
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- Locality
- Morenci mine, Greenlee Co., Arizona, United States
- Formula
- Cu1+Fe3+S2
- Size
- 10 x 9 x 7 cm - Cabinet
- Tagged
- ore mineral, sulfide, copper
Both Chalcopyrite ans Bornite are important ores of Copper and contains about 35 percent Copper. Chalcopyrite is the most widely occuring mineral of Copper. and is usually a primary mineral in porphyry deposits and is usually associated with Bornite, Chalcocite, Covellite, and Digenite.
This specimen is a good example of vein mineralization from a Copper porphyry deposit. There are two good "blowouts" of Chalcopyrite to 1.5cm and is sandwiched between layers of black, tarnished Bornite.
- Availability
- Sold
- Featured
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- Locality
- Espanola, Ontario, Canada
- Formula
- CoAsS
- Size
- 6.5 x 5 x 4 cm - Sm Cabinet
- Tagged
- ore mineral, sulfide
Ex. Mike Groben specimen with several embedded cubic crystals from 5 to 8mm. Cobaltite is the promary ore of Cobalt. It is most commonly in high temperature deposits. Cobaltite contains 32% Cobalt. It usually occurs as disseminations in metamorphic rocks or in vein deposits with Cobalt and Nickel sulfides.
