Mineralogy Database

Jennite Mineral Data

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General Jennite Information

Help on Chemical  Formula: Chemical Formula: Ca9Si6O18(OH)6•8H2O
Help on Composition: Composition: Molecular Weight = 1,063.37 gm
   Calcium   33.92 %  Ca   47.46 % CaO
   Silicon   15.85 %  Si   33.90 % SiO2
   Hydrogen   2.09 %  H    18.64 % H2O
   Oxygen    48.15 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca9Si6O18(OH)6•8(H2O)
Help on Environment: Environment: Late stage mineral in metamorphosed limestone.
Help on IMA Status: IMA Status: Approved IMA 1966
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 Clarence Marvin Jenni (1896-1973), American mineral collector and director of the Geological Museum, University of Missouri.
Help on Name Pronunciation: Name Pronunciation: Jennite Say JENNITE