Algodonite
(repeating unit)Cu6As IMA symbol Ago[1] Strunz classification 2.AA.10a Crystal system Hexagonal Crystal class Dihexagonal dipyramidal (6/mmm)
H-M symbol: (6/m 2/m 2/m) Space group P63/mmc Unit cell a = 2.6, c = 4.228 [Å]; Z = 2 Identification Formula mass 456.2 g/mol Color Gray, silver white, steel gray, tarnishes dull bronze Crystal habit Massive, granular. Common texture observed in granite and other igneous rock Fracture Sub-conchoidal Mohs scale hardness 4 Luster Metallic Diaphaneity Opaque Specific gravity 8.38 (measured), 8.72 (calculated) Other characteristics Non-magnetic, non-fluorescent References [2][3][4]
H-M symbol: (6/m 2/m 2/m)
Algodonite is a copper arsenide mineral with formula: Cu6As. It is a gray white metallic mineral crystallizing in the hexagonal system. It has a Mohs hardness of 4 and a specific gravity of 8.38 – 8.72.
It was first described in 1857 from the Algodones silver mine, Coquimbo, Chile.
References
- ^ 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.
- ^ Algodonite. Webmineral
- ^ Algodonite. Mindat.org
- ^ Williams, Sidney A. (1963). "Crystals of rammelsbergite and algodonite". American Mineralogist. 48: 421–422.
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