Weissite
(repeating unit)Cu
2−xTe IMA symbol Wst[1] Strunz classification 2.BA.30 Crystal system Hexagonal Crystal class Dihexagonal dipyramidal (6mmm)
H-M symbol: (6/m 2/m 2/m) Space group P6/mmm Unit cell a = 12.54, c = 21.71 [Å]; Z = 15 Identification Color Bluish black to black with tarnish Crystal habit Lens shaped masses Cleavage None Fracture Uneven Mohs scale hardness 3 Luster Metallic Streak Black Diaphaneity Opaque Specific gravity 6 Birefringence Distinct Pleochroism Distinct References [2][3][4]
2−xTe
H-M symbol: (6/m 2/m 2/m)
Weissite is a telluride mineral, a copper telluride. Its chemical formula is Cu
2−xTe. Weissite has hexagonal crystal structure. Its specific gravity is 6 and its Mohs hardness is 3. Occurrence is in Gunnison County, Colorado, Arizona and New Mexico in the United States. It is also reported from Kalgoorlie, Western Australia and Dalarna and Värmland, Sweden.[3]
Weissite occurs in hydrothermal deposits associated with pyrite, native tellurium, sylvanite, petzite, rickardite, native sulfur, native gold, calaverite and krennerite.[2]
It was first described in 1927 for an occurrence in the Good Hope Mine in the Vulcan District of Gunnison County, Colorado.[3] It was named for mine owner Louis Weiss.[4]
See also
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 Weissite in the Handbook of Mineralogy
- ^ a b c Mindat entry
- ^ a b Webmineral
- D. M. Chizhikov and V. P. Shchastlivyi, 1966, Tellurium and Tellurides, Nauka Publishing, Moscow
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