Chemical Formula:
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Al6.5-7(BO3)(SiO4)3(O,OH)3 |
Composition:
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Molecular Weight = 571.93 g |
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Aluminum |
33.02 % |
Al |
62.40 % |
Al2O3 |
0.00 % |
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Silicon |
14.73 % |
Si |
31.52 % |
SiO2 |
0.00 % |
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Boron |
1.89 % |
B |
6.09 % |
B2O3 |
0.00 % |
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Oxygen |
50.35 % |
O |
0.00 % |
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0.00 % |
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99.99 % |
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100.01 % |
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Empirical Formula:
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Al7O3(BO3)(SiO4)3 |
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Environment:
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Pegmatites, pneumatolytic, and metamorphic rocks |
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Locality:
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San Diego Co., California.. Link to
MinDat.org
Location Data.
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Name Origin:
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Named after the French paleontologist, M. E. Dumortier (1803-1873) |
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Synonym:
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