{{Infobox mineral | name = Achávalite | image = Achavalite.jpg | alt = | caption = Black metallic crystals of achávalite from Cacheuta Mine, Mendoza, Argentina | category = Selenide mineral | formula = (Fe,Cu)Se |IMAsymbol=Ahv<ref>{{Cite journal|last=Warr|first=L.N.|date=2021|title=IMA–CNMNC approved mineral symbols|journal=Mineralogical Magazine|volume=85|issue=3|pages=291–320|doi=10.1180/mgm.2021.43|bibcode=2021MinM...85..291W|s2cid=235729616|doi-access=free}}</ref> | molweight = 134.81 g/mol | strunz = 2.CC.05 | dana = | system = Hexagonal | class = Dihexagonal dipyramidal (6/mmm) <br/>H-M symbol: (6/m 2/m 2/m) | symmetry = ''P''6<sub>3</sub>/mmc | unit cell = a = 3.636, c = 5.946 [Å], Z = 2 | color = Dark grey | colour = | habit = | twinning = | cleavage = | fracture = | tenacity = | mohs = 2.5 | luster = Metallic | streak = Grey-black | diaphaneity = Opaque | gravity = 6.53 | density = | polish = | opticalprop = | refractive = | birefringence = | pleochroism = | 2V = | dispersion = | extinction = | length fast/slow = | fluorescence = | absorption = | melt = | fusibility = | diagnostic = | solubility = | impurities = | alteration = | other = | prop1 = | prop1text = | references = <ref name=Mindat>[http://www.mindat.org/min-14.html Mindat Profile]</ref><ref name=Webmin>[http://webmineral.com/data/Achavalite.shtml Achavalite data on WebMineral]</ref>
}} '''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.<ref name=Mindat/><ref name=Webmin/><ref>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</ref>
==See also== * List of minerals
==References== {{Reflist}}
{{Commonscat}} {{Wiktionary}}
{{DEFAULTSORT:Achavalite}} Category:Selenide minerals Category:Hexagonal minerals Category:Minerals in space group 194
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