Mineralogy Database

Apophyllite-(NaF) Mineral Data

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General Apophyllite-(NaF) Information

Help on Chemical Formula: Chemical Formula: NaCa4Si8O20F•8(H2O)
Help on Composition: Composition: Molecular Weight = 891.09 gm
   Sodium     2.58 %  Na    3.48 % Na2O
   Calcium   17.99 %  Ca   25.17 % CaO
   Silicon   25.21 %  Si   53.94 % SiO2
   Hydrogen   1.81 %  H    16.17 % H2O
   Oxygen    50.27 %  O
   Fluorine   2.13 %  F     2.13 % F
               -   %   F    -0.90 % -O=F2    
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: NaCa4Si8O20F•8(H2O)
Help on IMA Status: IMA Status: Approved IMA 1981
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek apophylliso - "it flakes off" and the composition.
Help on Name Pronunciation: Name Pronunciation: Apophyllite-(NaF) + Pronunciation Say APOPHYLLITE-(NAF)
Help on Synonym: Synonym: Natroapophyllite - Renamed to Apophyllite-(NaF) by Mineralogical Record, v39, (2008), p 131