Mineralogy Database

Pyrophosphite Mineral Data

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General Pyrophosphite Information

Help on Chemical  Formula: Chemical Formula: K2CaP2O7
Help on Composition: Composition: Molecular Weight = 287.36 gm
   Potassium   24.35 %  K    29.34 % K2O
   Sodium       0.80 %  Na    1.08 % Na2O
   Calcium     13.81 %  Ca   19.32 % CaO
   Magnesium    0.51 %  Mg    0.84 % MgO
   Phosphorus  21.56 %  P    49.40 % P2O5
   Oxygen      38.97 %  O
              ______        ______ 
              100.00 %       99.97 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K1.79Na0.1Ca0.99Mg0.06P2O7
Help on Environment: Environment: Arnhemite and pyrophosphite are the principal phases in a slag that forms a thin layer in a profile of cave soil. The slag is interpreted to have resulted from the melting of ashes during the combustion of bat quano.
Help on IMA Status: IMA Status: Not Approved IMA
Help on Locality: Locality: Arhem Cave, 150 km east of Windhoek, Namibia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the Greek pyros, meaning fire and the element name - Phosphorus.