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Todorokite Mineral Data
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General Todorokite Information
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 Chemical Formula: |
(Na,Ca,K)2(Mn++++,Mn+++)6O12•3-4.5(H2O) |
| Composition: |
Molecular Weight = 583.05 gm |
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Potassium 0.13 % K 0.16 % K2O |
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Sodium 0.79 % Na 1.06 % Na2O |
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Calcium 0.34 % Ca 0.48 % CaO |
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Manganese 56.54 % Mn 27.08 % Mn2O3 / 59.64 % MnO2 |
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Hydrogen 1.04 % H 9.27 % H2O |
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Oxygen 41.16 % O |
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______ ______ |
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100.00 % 97.69 % = TOTAL OXIDE |
| Empirical Formula: |
Na0.2Ca0.05K0.02Mn4+4Mn3+2O12•3(H2O) |
| Environment: |
Primarily found as a constituent mineral in deep sea nodules. |
| IMA Status: |
Valid Species (Pre-IMA) 1934 |
| Locality: |
Todroki mine, Hikkaido, Japan. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the locality. |
| Name Pronunciation: |
Todorokite + Pronunciation  |
| Synonym: |
ICSD 202725 |
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PDF 38-475 |
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