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Epsomite Mineral Data
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General Epsomite Information
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 Chemical Formula: |
MgSO4•7(H2O) |
| Composition: |
Molecular Weight = 246.48 gm |
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Magnesium 9.86 % Mg 16.35 % MgO |
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Hydrogen 5.73 % H 51.16 % H2O |
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Sulfur 13.01 % S 32.48 % SO3 |
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Oxygen 71.40 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Mg(SO4)•7(H2O) |
| Environment: |
White efflorescence on cave walls, volcanic exhalations, or deposited by Mg sulfate spring waters. |
| IMA Status: |
Valid Species (Pre-IMA) 1824 |
| Locality: |
Lake-bed deposits on Kruger Mountain, Oregon. Link to MinDat.org Location Data. |
| Name Origin: |
The mineral has long been known from the deposits associated with the mineral waters at Epsom, Surrey, England. |
| Name Pronunciation: |
Epsomite  |
| Synonym: |
Bitter Salt |
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Epsom Salts |
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ICSD 29384 |
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PDF 36-419 |
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Reichardite - massive |
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