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Grenmarite Mineral Data
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General Grenmarite Information
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 Chemical Formula: |
(Zr,Mn)2(Zr,Ti)(Mn,Na)(Na,Ca)4(Si2O7)2(O,F)4 |
| Composition: |
Molecular Weight = 780.16 gm |
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Sodium 11.82 % Na 15.93 % Na2O |
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Calcium 1.34 % Ca 1.87 % CaO |
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Yttrium 0.23 % Y 0.29 % Y2O3 |
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Zirconium 24.20 % Zr 32.69 % ZrO2 |
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Titanium 2.76 % Ti 4.61 % TiO2 |
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Manganese 6.62 % Mn 4.36 % MnO / 4.65 % Mn2O3 |
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Iron 1.65 % Fe 2.12 % FeO |
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Silicon 14.40 % Si 30.81 % SiO2 |
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Oxygen 31.58 % O |
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Fluorine 5.41 % F 5.41 % F |
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- %
F -2.28 % -O=F2 |
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______ ______ |
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100.00 % 100.46 % = TOTAL OXIDE |
| Empirical Formula: |
Zr1.52Mn3+0.46Y0.02Zr0.55Ti0.45Mn2+0.48Na0.29Fe2+0.23Na3.72Ca0.26Si4O15.4F2.22 |
| Environment: |
Syenite pegmatite. Isostructural with seidozerite. |
| IMA Status: |
Approved IMA 2004 (Dana # Added) |
| Locality: |
Eastern side of the island Vesle Ar�ya in the Langesundsfjord district, Norway. Link to MinDat.org Location Data. |
| Name Origin: |
The name is after Grenmar, the Norse name of the Langesundsfjord. |
| Synonym: |
IMA2003-024 |
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