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Manganoneptunite Mineral Data
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General Manganoneptunite Information
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 Chemical Formula: |
KNa2Li(Mn,Fe++)2Ti2Si8O24 |
| Composition: |
Molecular Weight = 906.78 gm |
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Potassium 4.31 % K 5.19 % K2O |
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Sodium 5.07 % Na 6.84 % Na2O |
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Lithium 0.77 % Li 1.65 % Li2O |
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Titanium 10.56 % Ti 17.62 % TiO2 |
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Manganese 9.09 % Mn 11.73 % MnO |
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Iron 3.08 % Fe 3.96 % FeO |
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Silicon 24.78 % Si 53.01 % SiO2 |
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Oxygen 42.35 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
KNa2LiMn2+1.5Fe2+0.5Ti2Si8O24 |
| Environment: |
Found in syenites and syenite pegmatites. |
| IMA Status: |
Valid Species (Pre-IMA) 1923 |
| Locality: |
Lovozero Massif, Kola Peninsula, Russia. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the composition and relationship to neptunite. |
| Synonym: |
Mangan-neptunite - Renamed as Manganoneptunite by Mineralogical Record, v330 (2008), p131 |
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