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Magnesiostaurolite Mineral Data
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General Magnesiostaurolite Information
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 Chemical Formula: |
[ ]4Mg4Al16(Al,[ ])2Si8O40[O6,(OH)2] |
| Composition: |
Molecular Weight = 1,562.60 gm |
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Lithium 0.42 % Li 0.90 % Li2O |
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Magnesium 4.70 % Mg 7.79 % MgO |
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Titanium 0.12 % Ti 0.20 % TiO2 |
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Aluminum 30.36 % Al 57.36 % Al2O3 |
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Zinc 0.08 % Zn 0.10 % ZnO |
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Iron 0.57 % Fe 0.74 % FeO |
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Silicon 14.31 % Si 30.61 % SiO2 |
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Hydrogen 0.26 % H 2.29 % H2O |
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Oxygen 49.19 % O |
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______ ______ |
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100.00 % 99.99 % = TOTAL OXIDE |
| Empirical Formula: |
Mg0.72Fe2+0.16Mg1.85Li0.94Zn0.02Al15.96Ti0.04Al1.58Mg0.45Si7.96Al0.04O40.04(OH)3.98O4.02 |
| Environment: |
Anhedral inclusions up to 250 micro-m in pyrope megablasts. Ultra-high pressure mineral. |
| IMA Status: |
Approved IMA 2003 (Dana #Added) |
| Locality: |
Coesite-bearing Dora-Maira massif, Italian Western Alps. Link to MinDat.org Location Data. |
| Name Origin: |
Named as the magnesium-dominant analog of staurolite. |
| Synonym: |
IMA1992-035 |
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