Mineralogy Database

Orthochamosite Mineral Data

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General Orthochamosite Information

Help on Chemical Formula: Chemical Formula: (Fe++,Mg,Fe+++)5Al(Si3Al)O10(OH,O)8
Help on Composition: Composition: Molecular Weight = 664.18 gm
   Magnesium   5.49 %  Mg    9.10 % MgO
   Aluminum    8.12 %  Al   15.35 % Al2O3
   Iron       29.43 %  Fe   32.45 % FeO /  6.01 % Fe2O3
   Silicon    12.69 %  Si   27.14 % SiO2
   Hydrogen    0.91 %  H     8.14 % H2O
   Oxygen     43.36 %  O
             ______        ______ 
             100.00 %       98.19 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe2+3Mg1.5Fe3+0.5Al2Si3O12(OH)6
Help on Environment: Environment: In a lateritic clay derived from the alteration of olivine basalts (Ayrshire, Scotland).
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1957 (Dana # Added)
Help on Locality: Locality: Kank, Kutna Hora, Stredocesky kraj, Cechy (Bohemia), Czech Republic. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the orthorhombic analogue of chamosite.
Help on Name Pronunciation: Name Pronunciation: Orthochamosite + Pronunciation Say ORTHOCHAMOSITE