Mineralogy Database

Prismatine Mineral Data

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General Prismatine Information

Help on Chemical Formula: Chemical Formula: ([ ],Fe,Mg)(Mg,Al,Fe)5Al4Si2(Si,Al)2(B,Si,Al)(O,OH,F)22
Help on Composition: Composition: Molecular Weight = 755.83 gm
   Magnesium   9.97 %  Mg   16.53 % MgO
   Aluminum   21.78 %  Al   41.14 % Al2O3
   Iron        5.91 %  Fe    2.85 % FeO /  5.28 % Fe2O3
   Silicon    14.12 %  Si   30.21 % SiO2
   Boron       0.86 %  B     2.76 % B2O3
   Hydrogen    0.40 %  H     3.58 % H2O
   Oxygen     44.45 %  O
   Fluorine    2.51 %  F     2.51 % F
                -   %   F    -1.06 % -O=F2    
             ______        ______ 
             100.00 %      103.81 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe2+0.3Mg0.1Mg3Al1.5Fe3+0.5Al4.6Si3.8B0.6O18(OH)3F
Help on Environment: Environment: Metamorphism of boron rich clay sediments to granulite facies.
Help on IMA Status: IMA Status: Approved IMA 1996 (Dana # Added)
Help on Locality: Locality: Waldheim, Sachsen (Saxony), Germany Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the prismatic form of typical crystals.
Help on Name Pronunciation: Name Pronunciation: Prismatine + Pronunciation Say PRISMATINE