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Staurolite Mineral Data
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General Staurolite Information
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 Chemical Formula: |
(Fe++,Mg)2Al9(Si,Al)4O20(O,OH)4 |
| Composition: |
Molecular Weight = 811.89 gm |
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Lithium 0.09 % Li 0.18 % Li2O |
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Magnesium 0.30 % Mg 0.50 % MgO |
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Aluminum 28.91 % Al 54.63 % Al2O3 |
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Iron 9.63 % Fe 12.39 % FeO |
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Silicon 13.49 % Si 28.86 % SiO2 |
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Hydrogen 0.29 % H 2.55 % H2O |
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Oxygen 47.30 % O |
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______ ______ |
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100.00 % 99.11 % = TOTAL OXIDE |
| Empirical Formula: |
Fe2+1.4Li0.1Mg0.1Al8.6Si3.9Al0.1O21.7(OH)2.3 |
| Environment: |
Metamorphosed aluminous sedimentary rocks. |
| IMA Status: |
Valid Species (Pre-IMA) 1792 |
| Locality: |
Common world wide occurrences. Link to MinDat.org Location Data. |
| Name Origin: |
From the Greek, stauros - "cross" and lithos - "stone" in allusion to the common cross shaped twins of the crystals. |
| Name Pronunciation: |
Staurolite + Pronunciation  |
| Synonym: |
ICSD 67446 |
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PDF 41-1484 |
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Staurotide |
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