- Clausthalite
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Clausthalite 
General Category Selinide mineral Chemical formula PbSe Strunz classification 02.CD.10 Dana classification 02.08.01.02 Identification Color Bluish gray to lead-gray Crystal habit Massive to granular with euhedral crystals Crystal system Isometric - hexoctahedralh (4/m 3 2/m) 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 [1][2][3] 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.[1]
It was first described in 1832 and named for the discovery locality of Clausthal-Zellerfeld in the Harz Mountains, Germany.[3]
See also
References
- ^ 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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