Mineralogy Database

Gengenbachite Mineral Data

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General Gengenbachite Information

Help on Chemical  Formula: Chemical Formula: KFe3(H2PO4)2(HPO4)4•6H2O or KFe3H8(PO4)6•6H2O
Help on Composition: Composition: Molecular Weight = 892.62 gm
   Potassium    4.38 %  K     5.28 % K2O
   Iron        18.77 %  Fe   24.15 % FeO
   Phosphorus  20.82 %  P    47.71 % P2O5
   Hydrogen     2.26 %  H    20.18 % H2O
   Oxygen      53.77 %  O
              ______        ______ 
              100.00 %       97.31 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: KFe2+3H8(PO4)6•6(H2O)
Help on IMA Status: IMA Status: Proposed IMA 2006
Help on Locality: Locality: Grube Silberbr´┐Żnnle, Haigerach Valley near Gengenbach, Central Black Forest, Germany Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Synonym: Synonym: IMA2001-003b