Mineralogy Database

Clinoferrosilite Mineral Data

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General Clinoferrosilite Information

Help on Chemical  Formula: Chemical Formula: (Fe++,Mg)2Si2O6
Help on Composition: Composition: Molecular Weight = 248.09 gm
   Magnesium   4.90 %  Mg    8.12 % MgO
   Iron       33.77 %  Fe   43.44 % FeO
   Silicon    22.64 %  Si   48.44 % SiO2
   Oxygen     38.69 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe2+1.5Mg0.5Si2O6
Help on Environment: Environment: As acicular crystals in lithophysae in obsidian (Lake Naivasha, Kenya). Dimorphous with ferrosilite; forms a series with clinoenstatite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1935
Help on Locality: Locality: From near Lake Naivasha, Rift Valley, Kenya. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for its monoclinic crystal system and chemical identity with ferrosilite.
Help on Synonym: Synonym: Clinohypersthene
  ICSD 30675
  PDF 17-548