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Orlymanite Mineral Data
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General Orlymanite Information
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 Chemical Formula: |
Ca4Mn++3Si8O20(OH)6•2(H2O) |
| Composition: |
Molecular Weight = 1,007.87 gm |
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Calcium 15.91 % Ca 22.26 % CaO |
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Manganese 16.35 % Mn 21.12 % MnO |
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Silicon 22.29 % Si 47.69 % SiO2 |
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Hydrogen 1.00 % H 8.94 % H2O |
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Oxygen 44.45 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Ca4Mn2+3Si8O20(OH)6•2(H2O) |
| Environment: |
Part of a vein assemblage. One specimen known. |
| IMA Status: |
Approved IMA 1990 |
| Locality: |
Wessels mine, Kalahari manganese field, Cape Province, South Africa. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Orlando P. Lyman (1903-1986), founder of Lyman House Memorial Museum, Hilo, Hawaii. |
| Name Pronunciation: |
Orlymanite + Pronunciation  |
| Synonym: |
IMA1988-029 |
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