Domeykite
| Domeykite | |
|---|---|
| ملف:Domeykite.jpg | |
| العامة | |
| التصنيف | Arsenide mineral |
| الصيغة (repeating unit) | Cu3As |
| تصنيف سترونز | 2.AA.10b |
| النظام البلوري | Isometric |
| Crystal class | Hextetrahedral (43m) H-M symbol: (4 3m) |
| Space group | I43d |
| Unit cell | a = 9.62 Å; Z = 16 |
| التعرف | |
| كتلة الصيغة | 265.56 g/mol |
| Color | Tin-white to steel-gray |
| Crystal habit | Reniform, botryoidal; massive |
| Cleavage | None |
| Tenacity | Brittle – sectile |
| Mohs scale hardness | 3-3.5 |
| Luster | Metallic |
| Streak | Black gray |
| Diaphaneity | Opaque |
| الجاذبية النوعية | 7.2 – 8.1, average = 7.65 |
| سمات أخرى | Tarnishes pale yellow, then pale brown, and finally to iridescence |
| References | [1][2][3] |
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.[1][3]
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.[2]
Uses
Domeykite, being a minor copper ore, is used for obtaining copper. It can also be polished and used for ornamental purposes.[5]
See also
References
- ^ أ ب "Handbook of Mineralogy – Domeykite" (PDF). Archived from the original (PDF) on 2016-03-03. Retrieved 2011-10-21.
- ^ أ ب Mindat.org – Domeykite
- ^ أ ب Webmineral data – Domeykite
- ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
- ^ galleries – Domeykite
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