Mineralogy Database

Ferrihydrite Mineral Data

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General Ferrihydrite Information

Help on Chemical  Formula: Chemical Formula: Fe+++2O3•0.5(H2O)
Help on Composition: Composition: Molecular Weight = 168.70 gm
   Iron      66.21 %  Fe   94.66 % Fe2O3
   Hydrogen   0.60 %  H     5.34 % H2O
   Oxygen    33.19 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe3+2O3•0.5(H2O)
Help on Environment: Environment: Secondary mineral in an oxidizing environment, strongly dependant on pH.
Help on IMA Status: IMA Status: Approved IMA 1973
Help on Locality: Locality: Clara mine, Grube Clara, Germany Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the composition as a hydrated ferric iron compound.
Help on Name Pronunciation: Name Pronunciation: Ferrihydrite Say FERRIHYDRITE