Mineralogy Database

Benjaminite Mineral Data

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General Benjaminite Information

Help on Chemical  Formula: Chemical Formula: (Ag,Cu)3(Bi,Pb)7S12
Help on Composition: Composition: Molecular Weight = 2,134.46 gm
   Copper    2.23 %  Cu
   Silver   11.37 %  Ag
   Bismuth  48.95 %  Bi
   Lead     19.41 %  Pb
   Sulfur   18.03 %  S
           100.00 % 
Help on Empirical Formula: Empirical Formula: Ag2.25Cu0.75Bi5Pb2S12
Help on Environment: Environment: In a quartz vein near the contact of a soda-granite and an intrusive rhyolite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1924
Help on Locality: Locality: Outlaw Mine, 12 miles north of Manhattan, Nye Co. Nevada, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For Dr. Marcus Benjamin (1857-1932), of the U.S. National Museum.
Help on Name Pronunciation: Name Pronunciation: Benjaminite + Pronunciation Say BENJAMINITE
Help on Synonym: Synonym: ICSD 100734
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