Mineralogy Database

Twinnite Mineral Data

Search Webmineral :

General Twinnite Information

Help on Chemical  Formula: Chemical Formula: Pb(Sb,As)2S4
Help on Composition: Composition: Molecular Weight = 574.28 gm
   Antimony  40.28 %  Sb
   Arsenic    1.30 %  As
   Lead      36.08 %  Pb
   Sulfur    22.33 %  S
            100.00 % 
Help on Empirical Formula: Empirical Formula: PbSb1.9As0.1S4
Help on Environment: Environment: In marble with other lead sulfantimonides.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1957
Help on Locality: Locality: Madoc, Ontario, Canada. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Robert M. Thompson (1918-1967), Canadian Mineralogist: Thompson means "son of Thomas," which is Aramaic for "twin."
Help on Name Pronunciation: Name Pronunciation: Twinnite Say TWINNITE
Help on Synonym: Synonym: IMA1966-017