Mineralogy Database

Pargasite Mineral Data

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General Pargasite Information

Help on Chemical Formula: Chemical Formula: NaCa2(Mg,Fe++)4Al(Si6Al2)O22(OH)2
Help on Composition: Composition: Molecular Weight = 867.37 gm
   Sodium      2.65 %  Na    3.57 % Na2O
   Calcium     9.24 %  Ca   12.93 % CaO
   Magnesium   8.41 %  Mg   13.94 % MgO
   Aluminum    9.33 %  Al   17.63 % Al2O3
   Iron        6.44 %  Fe    8.28 % FeO
   Silicon    19.43 %  Si   41.56 % SiO2
   Hydrogen    0.23 %  H     2.08 % H2O
   Oxygen     44.27 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: NaCa2Mg3Fe2+Si6Al3O22(OH)2
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1814
Help on Locality: Locality: Pargas, Finland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its locality.
Help on Name Pronunciation: Name Pronunciation: Pargasite + Pronunciation Say PARGASITE
Help on Synonym: Synonym: ICSD 79836
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