Mineral Specimen and Product Inventory Search
- Availability
- Sold
- Locality
- Big Mike mine, Pershing Co., Nevada, United States
- Formula
- (Mg,Cu2+)SO4·7H2O
- Size
- 8 x 6 x 3 cm - Sm Cabinet
- Tagged
- copper
Alpersite was approved in 2003, but I haven't seen too many specimens of this mineral. It is a Mg-Cu sulfate and is post-mine. There are tiny crystals formless to tabular crystals less than 1mm and sugary aggregates. On this specimen there is also white, fibrous Pickeringite. This is the type and only locality. The lot that I have was verified by XRD.
- Availability
- Sold
- Locality
- Majuba Hill mine, Pershing Co., Nevada, United States
- Formula
- CuFe3+2(AsO4)2(OH)2·4H2O
- Size
- 7 x 4 x 3 cm - Sm Cabinet
- Tagged
- arsenate, copper
Bright green thin to almost fibrous acicular crystals. Excellent specimen.
- Availability
- Sold
- Locality
- Karabash, Chelyabinsk Oblast', Urals, Russia
- Formula
- Cu3Au
- Size
- 3.5 x 4 x 2 cm - Miniature
- Tagged
- copper, gold
A singly brassy golden crystal grain of about 0.75mm in matrix. The specimen is sawed flat on both sides. Comes with a Russian label.
- Availability
- Sold
- Locality
- Tsumeb mine, Tsumeb, Namibia
- Formula
- Cu3(CO3)2(OH)2
- Size
- 4.5 x 2.0 x 2.1 cm - Miniature
- Tagged
- carbonate, copper
Two sub-parallel deep lustrous blue Azurite crystals to 4.5cm. Ex. Prosper J. Williams.
- Availability
- Sold
- Locality
- Tsumeb mine, Tsumeb, Namibia
- Formula
- Cu3(CO3)2(OH)2
- Size
- 2.5 x 1.5 x 1 cm - Thumbnail
- Tagged
- carbonate, copper
An excellent thumbnail of deep blue Azurite with excellent crystals. The largest crystal is 9mm.
- Availability
- Available
- Price
- $25.00
- Locality
- Mammoth mine, Tintic dist., Juab Co., Utah, United States
- Formula
- Cu3(CO3)2(OH)2
- Size
- 4.5 x 4.5 x 3.5 cm - Miniature
- Tagged
- carbonate, copper
Good specimen of these two common Copper minerals. The Azurite is very lustrous but the crystals are not so good. On the otherhand the Malachite occurs as fine green balls.
