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Columbite-(Fe) Mineral Data
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General Columbite-(Fe) Information
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 Chemical Formula: |
Fe++Nb2O6 |
| Composition: |
Molecular Weight = 337.66 gm |
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Niobium 55.03 % Nb 78.72 % Nb2O5 |
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Iron 16.54 % Fe 21.28 % FeO |
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Oxygen 28.43 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Fe2+Nb2O6 |
| Environment: |
Pegmatites, and alluvial deposits. |
| IMA Status: |
Valid Species (Pre-IMA) 1802 |
| Locality: |
M'buye Mine, Rwanda. Link to MinDat.org Location Data. |
| Name Origin: |
Named after its content of the element niobium, formerly called columbium and the Latin ferrium - "iron." |
| Name Pronunciation: |
Columbite-(Fe) + Pronunciation  |
| Synonym: |
Coltan |
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Columbite-Tantalite |
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Ferrocolumbite - Renamed to Columbite-(Fe) by Mineralogical Record, v39 (2008), p 131 |
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Niobite |
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