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Foitite Mineral Data
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General Foitite Information
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 Chemical Formula: |
[ ]Na<0.5(Fe++,Al)3Al6Si6O18(BO3)3(OH)4 |
| Composition: |
Molecular Weight = 1,031.73 gm |
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Sodium 2.23 % Na 3.00 % Na2O |
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Aluminum 17.65 % Al 33.35 % Al2O3 |
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Iron 12.18 % Fe 17.41 % Fe2O3 |
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Silicon 16.33 % Si 34.94 % SiO2 |
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Boron 3.14 % B 10.12 % B2O3 |
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Hydrogen 0.39 % H 3.49 % H2O |
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Oxygen 48.07 % O |
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______ ______ |
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100.00 % 102.33 % = TOTAL OXIDE |
| Empirical Formula: |
NaFe3+2.25Al6.75Si6O18(BO3)3(OH)4 |
| Environment: |
Late-stage granitic pegmatite. |
| IMA Status: |
Approved IMA 1993 (Dana # Changed) |
| Locality: |
White Queen mine, Pala, San Diego County, California, USA. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Franklin F. Foit, Jr. (1942-), mineralogist, Washington State Univerisity, Washington, USA. |
| Name Pronunciation: |
Foitite  |
| Synonym: |
Foitite - (61.3.1.1) |
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ICSD 74012 |
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IMA1992-034 |
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PDF 46-1460 |
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Tourmaline |
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