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