Mineralogy Database

Chalcoalumite Mineral Data

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General Chalcoalumite Information

Help on Chemical  Formula: Chemical Formula: CuAl4(SO4)(OH)12•3(H2O)
Help on Composition: Composition: Molecular Weight = 525.67 gm
   Aluminum  20.53 %  Al   38.79 % Al2O3
   Copper    12.09 %  Cu   13.61 % Cu2O
   Hydrogen   3.45 %  H    30.84 % H2O
   Sulfur     6.10 %  S    15.23 % SO3
   Oxygen    57.83 %  O
            ______        ______ 
            100.00 %       98.48 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CuAl4(SO4)(OH)12•3(H2O)
Help on Environment: Environment: Secondary mineral in the oxidized portions of copper deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1925
Help on Locality: Locality: Bisbee, Cochise Co., and in the Grandview mine, Grand Canyon, Coconino Co., Arizona. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named from the Greek chalkos, for copper and Latin alum, for aluminum sulfate.
Help on Name Pronunciation: Name Pronunciation: Chalcoalumite Say CHALCOALUMITE