Clausthalite
(repeating unit)PbSe IMA symbol Cth[1] Strunz classification 2.CD.10 Dana classification 02.08.01.02 Crystal system Isometric Crystal class Hexoctahedral (m3m)
H-M symbol: (4/m 3 2/m) Space group Fm3m Identification Color Bluish gray to lead-gray Crystal habit Massive to granular with euhedral crystals Cleavage {001} Perfect, {010} Perfect, {100} Perfect Mohs scale hardness 2.5 Luster Metallic Streak grayish black Diaphaneity opaque Specific gravity 7.6–8.8 References [2][3][4][5] 
H-M symbol: (4/m 3 2/m)
Clausthalite is a lead selenide mineral, PbSe. It forms a solid solution series with galena PbS.
Occurrence
It occurs in low-sulfur hydrothermal deposits with other selenides and in mercury deposits. It is associated with tiemannite, klockmannite, berzelianite, umangite, gold, stibiopalladinite and uraninite.[3]
It was first described in 1832 and named for the discovery locality of Clausthal-Zellerfeld in the Harz Mountains, Germany.[5]
See also
Earth sciences portal
- Classification of minerals
- List of minerals
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.
- ^ Mineralienatlas
- ^ a b http://rruff.geo.arizona.edu/doclib/hom/clausthalite.pdf Handbook of Mineralogy
- ^ http://webmineral.com/data/Clausthalite.shtml Webmineral data
- ^ a b http://www.mindat.org/min-1061.html Mindat
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