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Leightonite Mineral Data
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General Leightonite Information
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 Chemical Formula: |
K2Ca2Cu(SO4)4•2(H2O) |
| Composition: |
Molecular Weight = 705.73 gm |
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Potassium 11.08 % K 13.35 % K2O |
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Calcium 11.36 % Ca 15.89 % CaO |
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Copper 18.01 % Cu 22.54 % CuO |
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Hydrogen 0.57 % H 5.11 % H2O |
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Sulfur 18.17 % S 45.38 % SO3 |
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Oxygen 40.81 % O |
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______ ______ |
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100.00 % 102.27 % = TOTAL OXIDE |
| Empirical Formula: |
K2Ca2Cu2(SO4)4•2(H2O) |
| Environment: |
Arid environments in oxidized copper sulfide ore deposits with low acidity. Structurally related to polyhalite. |
| IMA Status: |
Valid Species (Pre-IMA) 1938 |
| Locality: |
Chuquicamata, Antofagasta, Chile. Link to MinDat.org Location Data. |
| Name Origin: |
Named for T. Leighton, mineralogist at the University of Sanitago, Chile. |
| Name Pronunciation: |
Leightonite + Pronunciation  |
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