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Ahlfeldite Mineral Data
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General Ahlfeldite Information
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 Chemical Formula: |
(Ni,Co)SeO3•2(H2O) |
| Composition: |
Molecular Weight = 221.74 gm |
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Cobalt 6.64 % Co 8.45 % CoO |
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Nickel 19.85 % Ni 25.26 % NiO |
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Hydrogen 1.82 % H 16.25 % H2O |
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Selenium 35.61 % Se 50.04 % SeO2 |
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Oxygen 36.08 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Ni0.75Co0.25(SeO3)•2(H2O) |
| Environment: |
Formed as an alteration product of penroseeite and other selenides. |
| IMA Status: |
Valid Species (Pre-IMA) 1935 |
| Locality: |
Bolivia, Potos�, Colquechaca Link to MinDat.org Location Data. |
| Name Origin: |
Named for Federico Ahlfeld (1892-192), German-Bolivian geologist and mineralogist who studied Bolivian minerals. |
| Name Pronunciation: |
Ahlfeldite + Pronunciation  |
| Synonym: |
ICSD 69220 |
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PDF 25-1233 |
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