Mineralogy Database

Leucophanite Mineral Data

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General Leucophanite Information

Help on Chemical  Formula: Chemical Formula: (Na,Ca)2BeSi2(O,OH,F)7
Help on Composition: Composition: Molecular Weight = 235.92 gm
   Sodium     14.62 %  Na   19.70 % Na2O
   Calcium     8.49 %  Ca   11.88 % CaO
   Beryllium   3.82 %  Be   10.60 % BeO
   Silicon    23.81 %  Si   50.94 % SiO2
   Hydrogen    0.90 %  H     8.02 % H2O
   Oxygen     42.72 %  O
   Fluorine    5.64 %  F     5.64 % F
                -   %   F    -2.37 % -O=F2    
             ______        ______ 
             100.00 %      104.41 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na1.5Ca0.5BeSi2O4.2(OH)2.1F0.7
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1840
Help on Locality: Locality: Langesundfiord district, southern Norway. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek leucos, "white" and phanein, " to appear" in allusion to the white color
Help on Name Pronunciation: Name Pronunciation: Leucophanite Say LEUCOPHANITE