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Dumortierite Mineral Data
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General Dumortierite Information
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 Chemical Formula: |
Al6.5-7(BO3)(SiO4)3(O,OH)3 |
| Composition: |
Molecular Weight = 569.73 gm |
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Aluminum 32.68 % Al 61.74 % Al2O3 |
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Silicon 14.79 % Si 31.64 % SiO2 |
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Boron 1.90 % B 6.11 % B2O3 |
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Hydrogen 0.09 % H 0.79 % H2O |
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Oxygen 50.55 % O |
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______ ______ |
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100.00 % 100.28 % = TOTAL OXIDE |
| Empirical Formula: |
Al6.9(BO3)(SiO4)3O2.5(OH)0.5 |
| Environment: |
Pegmatites, pneumatolytic, and metamorphic rocks. |
| IMA Status: |
Valid Species (Pre-IMA) 1881 |
| Locality: |
San Diego Co., California. Link to MinDat.org Location Data. |
| Name Origin: |
Named after the French paleontologist, M. E. Dumortier (1803-1873). |
| Name Pronunciation: |
Dumortierite + Pronunciation  |
| Synonym: |
ICSD 100443 |
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PDF Jul-71 |
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