| |
 |
Fluoro-magnesio-arfvedsonite Mineral Data
|
|
|
General Fluoro-magnesio-arfvedsonite Information
|
 Chemical Formula: |
NaNa2(Mg,Fe++)4Fe+++[Si8O22](F,OH)2 |
| Composition: |
Molecular Weight = 828.15 gm |
| |
Potassium 1.42 % K 1.71 % K2O |
| |
Sodium 5.55 % Na 7.48 % Na2O |
| |
Calcium 1.94 % Ca 2.71 % CaO |
| |
Magnesium 12.03 % Mg 19.95 % MgO |
| |
Aluminum 0.65 % Al 1.23 % Al2O3 |
| |
Iron 4.72 % Fe 0.87 % FeO / 5.78 % Fe2O3 |
| |
Silicon 26.79 % Si 57.32 % SiO2 |
| |
Hydrogen 0.10 % H 0.87 % H2O |
| |
Oxygen 44.05 % O |
| |
Fluorine 2.75 % F 2.75 % F |
| |
- %
F -1.16 % -O=F2 |
| |
______ ______ |
| |
100.00 % 99.52 % = TOTAL OXIDE |
| Empirical Formula: |
Na2K0.3Ca0.4Mg4.1Fe2+0.1Fe3+0.6Al0.2Si7.9O22F1.2(OH)0.8 |
| Environment: |
Albite-microcline fenite in the contact zone of the Ilmen alkaline massif. |
| IMA Status: |
Approved IMA 1998 (Dana # Added) |
| Locality: |
Ilmen-Vishnevye Mountains alkaline massif, south Urals, Russia. Link to MinDat.org Location Data. |
| Name Origin: |
Named as the fluorine-dominant member of magnesio-arfvedsonite. |
| Synonym: |
IMA1998-056 |
| |