Mineralogy Database

Maghemite Mineral Data

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General Maghemite Information

Help on Chemical  Formula: Chemical Formula: gamma-Fe+++2O3
Help on Composition: Composition: Molecular Weight = 159.69 gm
   Iron    69.94 %  Fe  100.00 % Fe2O3
   Oxygen  30.06 %  O
          ______        ______ 
          100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe3+2O3
Help on Environment: Environment: Formed by weathering or low-temperature oxidation of spinels containing ferrous iron, commonly magnetite or titanian magnetite. Widespread yellow pigment in sediments.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1927
Help on Locality: Locality: Iron mountain mine, 9.5 miles NW of Redding, Shasta Co., California. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From MAGnetite and HEMatite, in allusion to the mineral's magnetism and composition.
Help on Name Pronunciation: Name Pronunciation: Maghemite + Pronunciation Say MAGHEMITE