Stilleite

(repeating unit)ZnSeIMA symbolSll[1]Strunz classification2.CB.05aCrystal systemCubicCrystal classHextetrahedral (43m)
H-M symbol: (4 3m)Space groupF43mUnit cella = 5.667 Å; Z = 4StructureJmol (3D)Interactive imageIdentificationColorGrayMohs scale hardness5LusterMetallicDiaphaneityOpaque to translucentSpecific gravity5.42Optical propertiesIsotropicRefractive indexAbout 2.5References[2][3]

Stilleite is a selenide mineral, zinc selenide, with the formula ZnSe. It has been found only as microscopic gray crystals occurring as inclusions in linnaeite associated with other selenide and sulfides. It was originally discovered in Katanga Province, Zaire in 1956 and is named for the German geologist, Hans Stille (1876–1966).[4]

It has been reported from the Santa Brigida mine, La Rioja Province, Argentina and from Tilkerode (Abberode) in the Harz Mountains, Germany.[2] Associated minerals include pyrite, linnaeite, clausthalite, selenian vaesite, molybdenite and dolomite in the Shinkolobwe region of the Congo); and with tiemannite, clausthalite, eucairite, umangite, klockmannite in the Santa Brigida mine, Argentina.[2]

See also

References

  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 Handbook of Mineralogy – Stilleite
  3. ^ Mindat.org – Stilleite
  4. ^ Webmineral.com – Stilleite


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