Mineralogy Database

Geminite Mineral Data

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General Geminite Information

Help on Chemical  Formula: Chemical Formula: Cu++2As+++++2O7•3(H2O)
Help on Composition: Composition: Molecular Weight = 442.98 gm
   Copper    28.69 %  Cu   35.91 % CuO
   Arsenic   33.83 %  As   51.89 % As2O5
   Hydrogen   1.37 %  H    12.20 % H2O
   Oxygen    36.12 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cu2As2O7•3(H2O)
Help on Environment: Environment: Coatings on quartz.
Help on IMA Status: IMA Status: Approved IMA 1990
Help on Locality: Locality: Cap Garonne mine, Var, France. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named from the Latin gemini, twins, in allusion to the usual character of the crystals.
Help on Name Pronunciation: Name Pronunciation: Geminite Say GEMINITE
Help on Synonym: Synonym: ICSD 81587
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