Mineralogy Database

Paragonite Mineral Data

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General Paragonite Information

Help on Chemical  Formula: Chemical Formula: NaAl2(Si3Al)O10(OH)2
Help on Composition: Composition: Molecular Weight = 382.20 gm
   Sodium     6.02 %  Na    8.11 % Na2O
   Aluminum  21.18 %  Al   40.02 % Al2O3
   Silicon   22.05 %  Si   47.16 % SiO2
   Hydrogen   0.53 %  H     4.71 % H2O
   Oxygen    50.23 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: NaAl3Si3O10(OH)2
Help on Environment: Environment: Metamorphic mineral formed in schists and gneisses under a broad range of P-T conditions. Commonly mistaken for "sericite".
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1843
Help on Locality: Locality: Mte. Campione, Tessin, Switzerland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named from the Greek for "to mislead", in allusion to its originally having been mistaken for talc.
Help on Name Pronunciation: Name Pronunciation: Paragonite + Pronunciation Say PARAGONITE