Mineralogy Database

Katoite Mineral Data

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General Katoite Information

Help on Chemical  Formula: Chemical Formula: Ca3Al2(SiO4)3-x(OH)4x x=1.5-3
Help on Composition: Composition: Molecular Weight = 414.37 gm
   Calcium   29.02 %  Ca   40.60 % CaO
   Aluminum  13.02 %  Al   24.61 % Al2O3
   Silicon   10.17 %  Si   21.75 % SiO2
   Hydrogen   1.46 %  H    13.04 % H2O
   Oxygen    46.33 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca3Al2(SiO4)1.5(OH)6
Help on Environment: Environment: A hydrothermal mineral in cavities in a phonolitic lava flow that erupted through an argillaceous marl.
Help on IMA Status: IMA Status: Approved IMA 1984
Help on Locality: Locality: Campomorto quarry, near Montalto di Castro, Lazio, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Akira Kato, mineralogist of the National Science Museum, Tokyo, Japan.
Help on Name Pronunciation: Name Pronunciation: Katoite Say KATOITE
Help on Synonym: Synonym: Hydrogrossular
  ICSD 202315
  PDF 38-368