Mineralogy Database

Tilleyite Mineral Data

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General Tilleyite Information

Help on Chemical  Formula: Chemical Formula: Ca5Si2O7(CO3)2
Help on Composition: Composition: Molecular Weight = 488.58 gm
   Calcium  41.02 %  Ca   57.39 % CaO
   Silicon  11.50 %  Si   24.60 % SiO2
   Carbon    4.92 %  C    18.02 % CO2
   Oxygen   42.57 %  O
           ______        ______ 
           100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca5Si2O7(CO3)2
Help on Environment: Environment: In the contact metamorphic zone between igneous rocks and limestones, formed at low pressure and high temperature.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1933
Help on Locality: Locality: Crestmore quarry, 5 miles NW of Riverside, Riverside County, California. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Cecil Edgar Tilley (1894-1973), British petrologist, Cambridge University, Cambridge, England.
Help on Name Pronunciation: Name Pronunciation: Tilleyite + Pronunciation Say TILLEYITE
Help on Synonym: Synonym: ICSD 14256
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