Vulcanite

Copper telluride mineral
(repeating unit)CuTeIMA symbolVul[1]Strunz classification2.CB.75Crystal systemOrthorhombicCrystal classDipyramidal (mmm)
H-M symbol: (2/m 2/m 2/m)Space groupPmnmIdentificationColorPale to yellow bronzeCrystal habitMassive, granular, tabularTwinningCommonCleavage[hk0] Good, [h0l] IndistinctFractureSectile – Curved shavings or scrapings produced by a knife bladeMohs scale hardness1–2LusterMetallicDiaphaneityOpaqueSpecific gravity7.1PleochroismVery strong, bright yellow to blue-grayFusibility1.5References[2][3][4]

Vulcanite is a rare copper telluride mineral. The mineral has a metallic luster, and has a green or bronze-yellow tint. It has a hardness between 1 and 2 on the Mohs scale (between talc and gypsum). Its crystal structure is orthorhombic.

Vulcanite is named for the place where it was discovered in 1961, the Mammoth Good Hope Mine in Vulcan (ghost town and district), Gunnison County, Colorado.[4] Small deposits have also been discovered in Japan, Russia, Saudi Arabia, and Norway. It occurs with native tellurium, rickardite, petzite, and sylvanite.

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. ^ "Vulcanite" in Handbook of Mineralogy. Mineralogical Society of America
  3. ^ Vulcanite Mineral Data. Webmineral
  4. ^ a b Vulcanite. Mindat


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