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Ferrotaaffeite-6N3S Mineral Data
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General Ferrotaaffeite-6N3S Information
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 Chemical Formula: |
(Fe++,Zn,Mg)2Al6BeO12 |
| Composition: |
Molecular Weight = 470.24 gm |
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Magnesium 1.03 % Mg 1.71 % MgO |
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Beryllium 1.72 % Be 4.79 % BeO |
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Aluminum 34.43 % Al 65.05 % Al2O3 |
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Zinc 4.17 % Zn 5.19 % ZnO |
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Iron 17.81 % Fe 22.92 % FeO |
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Oxygen 40.83 % O |
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______ ______ |
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100.00 % 99.66 % = TOTAL OXIDE |
| Empirical Formula: |
Fe2+1.5Zn0.3Mg0.2Al6Be0.9O12 |
| Environment: |
Wall zone of a granitic pegmatite in "hornblende" gabbro. Renamed from pehrmanite. |
| IMA Status: |
Approved IMA 1981 |
| Locality: |
Rosendal pegmatite, Kemio (Kimito) Island, southwestern Finland. Link to MinDat.org Location Data. |
| Name Origin: |
Named as the FERRous analog of magnesiotaaffeite. (S=Spinel, N=Nolanite Layers). |
| Synonym: |
IMA2001-A |
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Pehrmanite |
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