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Shigaite Mineral Data
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General Shigaite Information
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 Chemical Formula: |
Mn++7Al4(SO4)2(OH)22•8(H2O) |
| Composition: |
Molecular Weight = 1,202.90 gm |
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Manganese 31.97 % Mn 41.28 % MnO |
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Aluminum 8.97 % Al 16.95 % Al2O3 |
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Hydrogen 3.18 % H 28.46 % H2O |
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Sulfur 5.33 % S 13.31 % SO3 |
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Oxygen 50.54 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Mn2+7Al4(SO4)2(OH)22•8(H2O) |
| Environment: |
Found in manganosite-rhodocrosite-sonolite ore. |
| IMA Status: |
Approved IMA 1985 |
| Locality: |
Loi mine, Shinga Prefecture, Japan. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the locality. |
| Name Pronunciation: |
Shigaite  |
| Synonym: |
ICSD 82492 |
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PDF 38-428 |
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