Mineralogy Database

Pumpellyite-(Fe+++) Mineral Data

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General Pumpellyite-(Fe+++) Information

Help on Chemical  Formula: Chemical Formula: Ca2Fe+++Al2(SiO4)(Si2O7)(OH,O)2•(H2O)
Help on Composition: Composition: Molecular Weight = 502.25 gm
   Calcium   15.96 %  Ca   22.33 % CaO
   Aluminum  10.74 %  Al   20.30 % Al2O3
   Iron      11.12 %  Fe   15.90 % Fe2O3
   Silicon   16.78 %  Si   35.89 % SiO2
   Hydrogen   0.80 %  H     7.17 % H2O
   Oxygen    44.60 %  O
            ______        ______ 
            100.00 %      101.59 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca2Fe3+Al2(SiO4)(Si2O7)(OH)2•(H2O)
Help on Environment: Environment: Metamorphic rocks.
Help on IMA Status: IMA Status: Approved IMA 1973
Help on Locality: Locality: Langban, near Filipstad, Varmland, Sweden (actually the TL of julgoldite). Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the American geologist, R. Pumpelly (1837-1923).
Help on Name Pronunciation: Name Pronunciation: Pumpellyite-(Fe+++) + Pronunciation Say PUMPELLYITE-(FE+++)