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Magnesiofoitite Mineral Data
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General Magnesiofoitite Information
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 Chemical Formula: |
[ ](Mg2Al)Al6(Si6O18)(BO3)3(OH)4 |
| Composition: |
Molecular Weight = 937.08 gm |
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Magnesium 3.89 % Mg 6.45 % MgO |
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Aluminum 21.31 % Al 40.26 % Al2O3 |
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Silicon 17.98 % Si 38.47 % SiO2 |
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Boron 3.46 % B 11.14 % B2O3 |
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Hydrogen 0.43 % H 3.84 % H2O |
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Oxygen 52.93 % O |
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______ ______ |
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100.00 % 100.17 % = TOTAL OXIDE |
| Empirical Formula: |
Mg1.5Al7.4Si6O18(BO3)3(OH)4 |
| Environment: |
Found in a hydrothermally altered quartz-phenocryst-bearing porphyry. The Mg analogue of foitite. |
| IMA Status: |
Approved IMA 2001 (Dana # Added) |
| Locality: |
Kyonosawa, Mitomi-mura, Higashi-Yamanashi-gun, Yamanashi-ken Prefecture, Honshu, Japan. Link to MinDat.org Location Data. |
| Name Origin: |
The name recalls its composition and relationship to foitite. |
| Synonym: |
IMA1998-037 |
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