Sartorite is a lead arsenic sulfide with the chemical formula PbAs2S4 and as type locality the Lengenbach Quarry in Legenbach, Binnental, Valais, Switzerland.[2][3] Historically, sartorite has been thought isomorphic to chalcostibite, emplectite, and zinckenite, but was definitively distinguished from the others in 1939.[4]
Sartorite | |
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General | |
Category | Satorite Group |
Formula (repeating unit) | PbAs2S4 |
IMA symbol | Sat[1] |
Strunz classification | 2.HC.05a |
Dana classification | 3.7.8.1 |
Crystal system | Monoclinic |
Crystal class | Prismatic |
Space group | P21/c (no. 14) |
Unit cell | 648.62 ų |
Identification | |
Colour | Grey |
Cleavage | Imperfect/Fair |
Fracture | Conchoidal |
Tenacity | Very brittle |
Mohs scale hardness | 3 |
Luster | Metallic |
Streak | chocolate-brown |
Diaphaneity | Opaque |
Specific gravity | 5.08 - 5.12 |
Density | 5.08 - 5.12 g/cm3 |
Pleochroism | Weak |
The mineral is named after its discoverer, Sartorius von Walterhausen (1809-1876).[5]
The mineral is predominantly found in hydrothermal deposits in dolomite. Sometimes the mineral is containing traces of thallium and has been reported from:[2]