Mineralogy Database

Foshagite Mineral Data

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General Foshagite Information

Help on Chemical Formula: Chemical Formula: Ca4Si3O9(OH)2
Help on Composition: Composition: Molecular Weight = 422.58 gm
   Calcium   37.94 %  Ca   53.08 % CaO
   Silicon   19.94 %  Si   42.66 % SiO2
   Hydrogen   0.48 %  H     4.26 % H2O
   Oxygen    41.65 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca4Si3O9(OH)2
Help on Environment: Environment: Metamorphosed limestone.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1925
Help on Locality: Locality: Crestmore quarry, 5 miles NW of Riverside, Riverside Co. California. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for William Fredrick Foshag (1894-1956), mineralogist and former curator at U. S. National Museum.
Help on Name Pronunciation: Name Pronunciation: Foshagite + Pronunciation Say FOSHAGITE
Help on Synonym: Synonym: ICSD 25818
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