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Nagashimalite Mineral Data
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General Nagashimalite Information
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 Chemical Formula: |
Ba4(V+++,Ti)4Si8B2O27Cl(O,OH)2 |
| Composition: |
Molecular Weight = 1,496.26 gm |
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Barium 36.71 % Ba 40.99 % BaO |
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Titanium 3.20 % Ti 5.34 % TiO2 |
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Vanadium 10.21 % V 15.03 % V2O3 |
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Silicon 15.02 % Si 32.13 % SiO2 |
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Boron 1.44 % B 4.65 % B2O3 |
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Hydrogen 0.03 % H 0.30 % H2O |
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Chlorine 2.37 % Cl 2.37 % Cl |
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- %
Cl -0.53 % -O=Cl2 |
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Oxygen 31.01 % O |
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______ ______ |
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100.00 % 100.27 % = TOTAL OXIDE |
| Empirical Formula: |
Ba4V3+3TiSi8B2O28.5Cl(OH)0.5 |
| Environment: |
In fissures cutting massive rhodonite ore in a bedded manganese deposit. |
| IMA Status: |
Approved IMA 1980 |
| Locality: |
Mogurazawa mine, Honshu, Kiryu, Gumma Prefecture, Japan. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Otokichi Nagashima (1890{1969), pioneer Japanese amateur mineralogist, |
| Name Pronunciation: |
Nagashimalite + Pronunciation  |
| Synonym: |
ICSD 201047 |
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PDF 33-188 |
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