Clausthalite

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Clausthalite
Clausthalite-207330.jpg
General
Category Selenide mineral
Formula
(repeating unit)
PbSe
Strunz classification 02.CD.10
Dana classification 02.08.01.02
Crystal system Isometric - hexoctahedralh (4/m 3 2/m)
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 [1][2][3]

Clausthalite is a lead selenide mineral, PbSe. It forms a solid solution series with galena PbS.

Occurrence[edit]

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[edit]

References[edit]