Mineralogy Database

Douglasite Mineral Data

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General Douglasite Information

Help on Chemical Formula: Chemical Formula: K2Fe++Cl4•2(H2O)
Help on Composition: Composition: Molecular Weight = 311.88 gm
   Potassium  25.07 %  K    30.20 % K2O
   Iron       17.91 %  Fe   23.04 % FeO
   Hydrogen    1.29 %  H    11.55 % H2O
   Chlorine   45.47 %  Cl   45.47 % Cl
                -   %   Cl  -10.26 % -O=Cl2   
   Oxygen     10.26 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K2Fe2+Cl4•2(H2O)
Help on Environment: Environment: Altered marine evaporite rocks.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1879
Help on Locality: Locality: Found at Douglasschall, northwest of Stassfurt, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its discovery locality.
Help on Name Pronunciation: Name Pronunciation: Douglasite + Pronunciation Say DOUGLASITE