Mineralogy Database

Chalcophanite Mineral Data

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General Chalcophanite Information

Help on Chemical  Formula: Chemical Formula: (Zn,Fe++,Mn++)Mn++++3O7•3(H2O)
Help on Composition: Composition: Molecular Weight = 459.22 gm
   Manganese  40.68 %  Mn    6.18 % MnO / 56.79 % MnO2
   Zinc       17.09 %  Zn   21.27 % ZnO
   Iron        6.08 %  Fe    7.82 % FeO
   Hydrogen    1.32 %  H    11.77 % H2O
   Oxygen     34.84 %  O
             ______        ______ 
             100.00 %      103.83 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Zn1.2Fe2+0.5Mn2+0.4Mn4+3O7•3(H2O)
Help on Environment: Environment: Common component of the weathered zone above Zn-Mn base metal deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1875
Help on Locality: Locality: Sterling Hill, near Ogdensburg, Sussex Co., New Jersey, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek for "copper" and "to appear," for the mineral's change in color on ignition.
Help on Name Pronunciation: Name Pronunciation: Chalcophanite Say CHALCOPHANITE
Help on Synonym: Synonym: Hydrofranklinite
  ICSD 202700
  PDF 15-807