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Seligmannite



Seligmannite
CategorySulphide Mineral
Chemical formulaPbCuAsS3
Identification
Molecular Weight441.87 gm
ColorLead gray to black
Crystal habitMassive to Crystaline
Crystal systemOrthorhombic - Dipyramidal
Twinningon {110} very common
CleavageIndistinct on the {001}, {100}, and {010}
FractureConchoidal
TenacityBrittle
Mohs Scale hardness3
LusterMetallic
Optical PropertiesAnisotropic
StreakBlack to chocolate brown
Density5.38 - 5.44 g/cm3
References[1] [2]

Seligmanite is a rare mineral, with the chemical formula PbCuAsS3. Originally described from the Lengenbach Quarry, Valais Canton, Switzerland; it has also been found in the Raura district, Lima Region, Peru; at Tsumeb, Oshikoto Region, Namibia; and at the Sterling Mine, Sussex County, New Jersey, USA.

References

  1. ^ http://www.mindat.org/min-3613.html
  2. ^ http://www.webmineral.com/data/Seligmannite.shtml
 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Seligmannite". A list of authors is available in Wikipedia.
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