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Mcgillite Mineral Data
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General Mcgillite Information
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Chemical Formula: |
(Mn,Fe++)8Si6O15(OH)8Cl2 |
Composition: |
Molecular Weight = 1,038.40 gm |
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Magnesium 0.47 % Mg 0.78 % MgO |
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Manganese 37.03 % Mn 47.82 % MnO |
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Iron 3.23 % Fe 4.15 % FeO |
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Silicon 16.23 % Si 34.72 % SiO2 |
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Hydrogen 0.78 % H 6.94 % H2O |
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Chlorine 6.83 % Cl 6.83 % Cl |
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- %
Cl -1.54 % -O=Cl2 |
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Oxygen 35.44 % O |
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______ ______ |
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100.00 % 99.69 % = TOTAL OXIDE |
Empirical Formula: |
Mn2+7Fe2+0.6Mg0.2Si6O15(OH)8Cl2 |
Environment: |
Open space fracture fillings in a manganese-rich section of quartzite and argillite in a metamorphosed Pb-Zn orebody. |
IMA Status: |
Approved IMA 1980 |
Locality: |
In the Sullivan mine, Kimberley, Kootenay district, British Columbia, Canada. Link to MinDat.org Location Data. |
Name Origin: |
Named for McGill University, Montreal, Quebec, Canada. |
Name Pronunciation: |
Mcgillite + Pronunciation |
Synonym: |
IMA1979-024 |
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