Domeykite facts for kids
Quick facts for kids Domeykite |
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| General | |
| Category | Arsenide mineral |
| Formula (repeating unit) |
Cu3As |
| Strunz classification | 2.AA.10b |
| Crystal symmetry | I43d |
| Unit cell | a = 9.62 Å; Z = 16 |
| Identification | |
| Formula mass | 265.56 g/mol |
| Color | Tin-white to steel-gray |
| Crystal habit | Reniform, botryoidal; massive |
| Crystal system | Isometric |
| Cleavage | None |
| Tenacity | Brittle - sectile |
| Mohs scale hardness | 3-3.5 |
| Luster | Metallic |
| Streak | Black gray |
| Diaphaneity | Opaque |
| Specific gravity | 7.2 - 8.1, average = 7.65 |
| Other characteristics | Tarnishes pale yellow, then pale brown, and finally to iridescence |
Domeykite is a copper arsenide mineral, Cu3As. It crystallizes in the isometric system, although crystals are very rare. It typically forms as irregular masses or botryoidal forms. It is an opaque, white to gray (weathers brassy) metallic mineral with a Mohs hardness of 3 to 3.5 and a specific gravity of 7.2 to 8.1
It was first described in 1845 in the Algodones mines, Coquimbo, Chile. It was named after Polish mineralogist Ignacy Domeyko (1802–1889) by Wilhelm Haidinger.
Uses
Domeykite, being a minor copper ore, is used for obtaining copper. It can also be polished and used for ornamental purposes.
Mohawkite nugget, a mixture of domeykite, algodonite and native copper (50x40x28 mm)
See also
In Spanish: Domeikita para niños
- List of minerals
- List of minerals named after people
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Domeykite Facts for Kids. Kiddle Encyclopedia.