Mineralogy Database

Fersmanite Mineral Data

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General Fersmanite Information

Help on Chemical Formula: Chemical Formula: Ca4(Na,Ca)4(Ti,Nb)4(Si2O7)2O8F3
Help on Composition: Composition: Molecular Weight = 1,061.05 gm
   Sodium      5.63 %  Na    7.59 % Na2O
   Strontium   0.83 %  Sr    0.98 % SrO
   Calcium    20.02 %  Ca   28.01 % CaO
   Titanium   10.38 %  Ti   17.32 % TiO2
   Niobium    14.01 %  Nb   20.04 % Nb2O5
   Silicon    10.59 %  Si   22.65 % SiO2
   Oxygen     33.17 %  O
   Fluorine    5.37 %  F     5.37 % F
                -   %   F    -2.26 % -O=F2    
             ______        ______ 
             100.00 %       99.70 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca5.3Na2.6Sr0.1Ti2.3Nb1.6Si4O22F3
Help on Environment: Environment: Associated with feldspar and aegirite in veins in nepheline-syenite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1929
Help on Locality: Locality: Chibines Mountains, Kola peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Alexander Yevgenievich Fersman (1883-1945), Russian mineralogist and geochemist.
Help on Name Pronunciation: Name Pronunciation: Fersmanite + Pronunciation Say FERSMANITE
Help on Synonym: Synonym: ICSD 20821
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