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Ramsdellite Mineral Data
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General Ramsdellite Information
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 Chemical Formula: |
MnO2 |
| Composition: |
Molecular Weight = 86.94 gm |
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Manganese 63.19 % Mn 100.00 % MnO2 |
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Oxygen 36.81 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Mn4+O2 |
| Environment: |
Manganese deposits with pyrolusite. |
| IMA Status: |
Valid Species (Pre-IMA) 1943 |
| Locality: |
Lake Valley, Sierra County, New Mexico. Link to MinDat.org Location Data. |
| Name Origin: |
Named after the American mineralogist, Lewis S. Ramsdell (1895-1975), of the University of Michigan, who first described the mineral. |
| Name Pronunciation: |
Ramsdellite + Pronunciation  |
| Synonym: |
Groutellite - pseudomorph of ramsdellite after groutite |
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ICSD 78331 |
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PDF 44-142 |
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