Mineralogy Database

Changchengite Mineral Data

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General Changchengite Information

Help on Chemical  Formula: Chemical Formula: IrBiS
Help on Composition: Composition: Molecular Weight = 433.27 gm
   Bismuth  48.23 %  Bi
   Iridium  44.37 %  Ir
   Sulfur    7.40 %  S
           100.00 % 
Help on Empirical Formula: Empirical Formula: IrBiS
Help on Environment: Environment: Pt placer deposits derived from the host chromite ore bodies in dunite.
Help on IMA Status: IMA Status: Approved IMA 1997 (Dana # Added)
Help on Locality: Locality: Along a branch of the Luanhe River in Hebei Province, about 200 km ENE of Beijing, China. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after chancheng, the name of the "Great Wall" of China.
Help on Synonym: Synonym: IMA1995-047