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Hilgardite Mineral Data
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General Hilgardite Information
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 Chemical Formula: |
Ca2B5O9Cl•(H2O) |
| Composition: |
Molecular Weight = 331.67 gm |
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Calcium 24.17 % Ca 33.82 % CaO |
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Boron 16.30 % B 52.48 % B2O3 |
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Hydrogen 0.61 % H 5.43 % H2O |
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Chlorine 10.69 % Cl 10.69 % Cl |
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- %
Cl -2.41 % -O=Cl2 |
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Oxygen 48.24 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Ca2B5O9Cl•(H2O) |
| Environment: |
Minor borate mineral in salt deposits. |
| IMA Status: |
Approved IMA 1979 |
| Locality: |
Choctaw Salt Dome, Iberville Parish, Louisiana, USA Link to MinDat.org Location Data. |
| Name Origin: |
Named for Eugene W. Hilgard (1833-1916), German-American geologist, one of the first to describe the Loiuisiana salt dome deposits. |
| Name Pronunciation: |
Hilgardite + Pronunciation  |
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