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Chesterite Mineral Data
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General Chesterite Information
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 Chemical Formula: |
(Mg,Fe++)17Si20O54(OH)6 |
| Composition: |
Molecular Weight = 2,074.96 gm |
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Magnesium 14.93 % Mg 24.77 % MgO |
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Iron 11.44 % Fe 14.72 % FeO |
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Silicon 27.07 % Si 57.91 % SiO2 |
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Hydrogen 0.29 % H 2.60 % H2O |
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Oxygen 46.26 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Mg12.75Fe2+4.25Si20O54(OH)6 |
| Environment: |
In black wallrock between chlorite and actinolite zones of a metamorphosed ultramafic body. |
| IMA Status: |
Approved IMA 1978 |
| Locality: |
In the Carleton talc quarry, near Chester, Windsor Co., Vermont, USA. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the locality. |
| Synonym: |
ICSD 100659 |
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PDF 31-637 |
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