Achávalite
(repeating unit)(Fe,Cu)Se IMA symbol Ahv[1] Strunz classification 2.CC.05 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 = 3.636, c = 5.946 [Å], Z = 2 Identification Formula mass 134.81 g/mol Color Dark grey Mohs scale hardness 2.5 Luster Metallic Streak Grey-black Diaphaneity Opaque Specific gravity 6.53 References [2][3] 
H-M symbol: (6/m 2/m 2/m)
Achávalite is a selenide mineral that is a member of the nickeline group. It has only been found in a single Argentinian mine system, being first discovered in 1939 in a selenide deposit. The type locality is Cacheuta mine, Sierra de Cacheuta, Mendoza, Argentina.[2][3][4]
See also
- List of minerals
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.
- ^ a b Mindat Profile
- ^ a b Achavalite data on WebMineral
- ^ Hålenius, U., Hatert, F., Pasero, M., and Mills, S.J., IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) Newsletter 28. Mineralogical Magazine 79(7), 1859–1864
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