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Katoptrite Mineral Data
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General Katoptrite Information
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 Chemical Formula: |
(Mn,Mg)13(Al,Fe+++)4Sb+++++2Si2O28 |
| Composition: |
Molecular Weight = 1,553.59 gm |
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Magnesium 2.19 % Mg 3.63 % MgO |
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Manganese 41.37 % Mn 53.42 % MnO |
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Aluminum 5.73 % Al 10.83 % Al2O3 |
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Iron 1.80 % Fe 2.57 % Fe2O3 |
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Silicon 3.62 % Si 7.73 % SiO2 |
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Antimony 16.46 % Sb 21.86 % Sb2O5 |
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Oxygen 28.84 % O |
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______ ______ |
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100.00 % 100.05 % = TOTAL OXIDE |
| Empirical Formula: |
Mn2+11.7Mg1.4Al3.3Fe3+0.5Sb2.1Si2O28 |
| Environment: |
In metamorphosed limestones. |
| IMA Status: |
Valid Species (Pre-IMA) 1917 |
| Locality: |
Brattfors, Moss, and Jakobsberg mines, near Nordmark, Sweden. Link to MinDat.org Location Data. |
| Name Origin: |
Named from the Greek for "mirror", for the perfectly reflecting cleavage surfaces. |
| Name Pronunciation: |
Katoptrite + Pronunciation  |
| Synonym: |
Catoptrite |
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ICSD 121137 |
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PDF 19-274 |
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