Mineralogy Database

Hohmannite Mineral Data

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General Hohmannite Information

Help on Chemical  Formula: Chemical Formula: Fe+++2(SO4)2(OH)2•7(H2O)
Help on Composition: Composition: Molecular Weight = 463.94 gm
   Iron      24.07 %  Fe   34.42 % Fe2O3
   Hydrogen   3.48 %  H    31.06 % H2O
   Sulfur    13.82 %  S    34.51 % SO3
   Oxygen    58.63 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe3+2(SO4)2(OH)2•7(H2O)
Help on Environment: Environment: Low-temperature precipitate in oxidized iron sulfide deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1888
Help on Locality: Locality: Antofagasta, from near Caracoles, Sierra Gorda district, Chile. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Thomas Hohmann (1843-1897), mining engineer of Valparaiso, Chile who discovered the first specimens.
Help on Name Pronunciation: Name Pronunciation: Hohmannite + Pronunciation Say HOHMANNITE
Help on Synonym: Synonym: Castanite
  ICSD 37328
  PDF 17-155