Mineralogy Database

Jaffeite Mineral Data

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General Jaffeite Information

Help on Chemical  Formula: Chemical Formula: Ca4(Si3O7)(OH)6
Help on Composition: Composition: Molecular Weight = 458.61 gm
   Calcium   34.96 %  Ca   48.91 % CaO
   Silicon   18.37 %  Si   39.30 % SiO2
   Hydrogen   1.32 %  H    11.78 % H2O
   Oxygen    45.35 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca4(Si3O7)(OH)6
Help on Environment: Environment: Naturally occurring analog of "TSH" (Tricalcium Silicate Hydrate), a component of portland cement.
Help on IMA Status: IMA Status: Approved IMA 1989
Help on Locality: Locality: Kombat mine, located 37 km east of Otavi and 49 km south of Tsumeb in the north-central part of Namibia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Howard Jaffe of the University of Massachusetts.
Help on Name Pronunciation: Name Pronunciation: Jaffeite Say JAFFEITE
Help on Synonym: Synonym: ICSD 39725
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