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Janhaugite Mineral Data
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General Janhaugite Information
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 Chemical Formula: |
(Na,Ca)3(Mn++,Fe++)3(Ti++++,Zr,Nb)2Si4O15(OH,F,O)3 |
| Composition: |
Molecular Weight = 773.35 gm |
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Sodium 8.32 % Na 11.22 % Na2O |
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Calcium 1.04 % Ca 1.45 % CaO |
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Zirconium 4.72 % Zr 6.37 % ZrO2 |
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Titanium 9.29 % Ti 15.49 % TiO2 |
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Manganese 17.05 % Mn 22.01 % MnO |
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Niobium 3.60 % Nb 5.16 % Nb2O5 |
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Iron 4.33 % Fe 5.57 % FeO |
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Silicon 13.80 % Si 29.52 % SiO2 |
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Hydrogen 0.18 % H 1.63 % H2O |
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Oxygen 34.96 % O |
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Fluorine 2.70 % F 2.70 % F |
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- %
F -1.14 % -O=F2 |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Na2.8Ca0.2Mn2+2.4Fe2+0.6Ti1.5Zr0.4Nb0.3Si3.8O15(OH)1.4F1.1O0.5 |
| Environment: |
In groundmass and miarolitic cavities in sodium-rich granite. |
| IMA Status: |
Approved IMA 1983 |
| Locality: |
From Gjerdingen, 30 km north of Olso, Norway. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Jan Haug, and amateur mineralogist who first observed the mineral. |
| Name Pronunciation: |
Janhaugite + Pronunciation  |
| Synonym: |
ICSD 30900 |
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PDF 35-641 |
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