Mineralogy Database

Sillenite Mineral Data

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General Sillenite Information

Help on Chemical  Formula: Chemical Formula: Bi12SiO20
Help on Composition: Composition: Molecular Weight = 2,855.84 gm
   Silicon   0.98 %  Si    2.10 % SiO2
   Bismuth  87.81 %  Bi   97.90 % Bi2O3
   Oxygen   11.20 %  O
           ______        ______ 
           100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Bi12SiO20
Help on Environment: Environment: Associated with bismutite
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1943
Help on Locality: Locality: Durango, Mexico. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named fo rLars Gunnar Sillen (1916-1970) of Stockholm, Sweden for his work on Bi2O3 polymorphs.
Help on Name Pronunciation: Name Pronunciation: Sillenite + Pronunciation Say SILLENITE
Help on Synonym: Synonym: ICSD 28443
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