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Koktaite Mineral Data
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General Koktaite Information
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 Chemical Formula: |
(NH4)2Ca(SO4)2•(H2O) |
| Composition: |
Molecular Weight = 286.30 gm |
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Calcium 14.00 % Ca 19.59 % CaO |
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Hydrogen 2.82 % H - % Calc as (NH4)2O |
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Hydrogen 0.70 % H 6.29 % H2O |
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Sulfur 22.40 % S 55.93 % SO3 |
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Nitrogen 9.78 % N 18.19 % (NH4)2O |
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Oxygen 50.30 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
(NH4)2Ca(SO4)2•(H2O) |
| Environment: |
Waste heaps of a lignite mine. Pseudomorphous after gypsum. |
| IMA Status: |
Valid Species (Pre-IMA) 1948 |
| Locality: |
Zeravice, near Kyjov in southeastern Moravia, Czech Republic. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Jaroslav Kokta (1904-1970), Czech chemist, who analyzed the artificial compound. |
| Name Pronunciation: |
Koktaite  |
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