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Magnesiochloritoid Mineral Data
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General Magnesiochloritoid Information
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 Chemical Formula: |
MgAl2SiO5(OH)2 |
| Composition: |
Molecular Weight = 220.37 gm |
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Magnesium 11.03 % Mg 18.29 % MgO |
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Aluminum 24.49 % Al 46.27 % Al2O3 |
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Silicon 12.74 % Si 27.27 % SiO2 |
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Hydrogen 0.91 % H 8.18 % H2O |
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Oxygen 50.82 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
MgAl2SiO5(OH)2 |
| Environment: |
In metapelites and related rocks within high-grade blueschist rocks; stable under metamorphic conditions of near 500 �C and 18 kbar. |
| IMA Status: |
Approved IMA 1983 |
| Locality: |
Monte Rosa massif, near the Ghiacciaio di Verra; in the Val d'Ayas, Italy, near the border with Switzerland. Link to MinDat.org Location Data. |
| Name Origin: |
Named for magnesium in its composition and its relation to chloritoid. |
| Synonym: |
Sismondine |
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