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Pyrosmalite-(Mn) Mineral Data
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General Pyrosmalite-(Mn) Information
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 Chemical Formula: |
(Mn,Fe++)8Si6O15(OH,Cl)10 |
| Composition: |
Molecular Weight = 1,071.52 gm |
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Manganese 29.74 % Mn 38.40 % MnO |
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Iron 9.38 % Fe 12.07 % FeO |
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Silicon 15.73 % Si 33.64 % SiO2 |
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Hydrogen 0.56 % H 5.04 % H2O |
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Chlorine 13.23 % Cl 13.23 % Cl |
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- %
Cl -2.99 % -O=Cl2 |
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Oxygen 31.36 % O |
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______ ______ |
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100.00 % 99.40 % = TOTAL OXIDE |
| Empirical Formula: |
Mn2+5.8Fe2+1.8Si6O15(OH)6Cl4 |
| Environment: |
Metamorphosed iron and manganese ores. |
| IMA Status: |
Valid Species (Pre-IMA) 1953 |
| Locality: |
Nordmark in Vermland and at Dannemora, in Upsala, Sweden. Link to MinDat.org Location Data. |
| Name Origin: |
Manganese end member of pyrosmalite. |
| Synonym: |
Brokenhillite |
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Manganpyrosmalite - Renamed to Pyrosmalite-(Mn) by Mineralogical Record, v39 (2008), p 131 |
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