Uchucchacuaite (AgMnPb3Sb5S12) is a rare sulfosalt mineral found in hydrothermal deposits.

Uchucchacuaite
Uchucchacuaite in a matrix
General
CategorySulfosalt minerals
Formula
(repeating unit)
AgMnPb3Sb5S12
IMA symbolUch[1]
Strunz classification2.JB.40a
Crystal systemOrthorhombic
Crystal classDipyramidal (mmm)
H-M symbol: (2/m 2/m 2/m)
Space groupPmmm
Unit cella = 12.67 Å, b = 19.32 Å
c = 4.38 Å; Z = 4
Identification
Colorgrey
Lustermetallic
Diaphaneityopaque
References[2]

It was first described in 1984 for an occurrence in the Uchucchacua Mine, Oyon Province, Lima Department, Peru, and named for the mine.[2] It has also been reported from mines in Hokkaido, Japan.[2] It occurs with alabandite, galena, benavidesite, sphalerite, pyrite, pyrrhotite and arsenopyrite in the Peru deposit.[3]

References

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  1. ^ 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.
  2. ^ a b c Mindat
  3. ^ Handbook of Mineralogy