General Vastmanlandite-(Ce) Information
|
 Chemical Formula: |
(Ce,La)3CaAl2Mg2[Si2O7][SiO4]3F(OH)2 |
| Composition: |
Molecular Weight = 1,094.51 gm |
| |
Calcium 3.37 % Ca 4.71 % CaO |
| |
Lanthanum 11.80 % La 13.84 % La2O3 |
| |
Cerium 20.74 % Ce 24.29 % Ce2O3 |
| |
Praeseodymium 1.80 % Pr 2.11 % Pr2O3 |
| |
Samarium 0.41 % Sm 0.48 % Sm2O3 |
| |
Gadolinium 0.14 % Gd 0.17 % Gd2O3 |
| |
Yttrium 0.16 % Y 0.21 % Y2O3 |
| |
Magnesium 3.38 % Mg 5.60 % MgO |
| |
Aluminum 4.63 % Al 8.76 % Al2O3 |
| |
Iron 2.81 %
Fe 1.18 % FeO / 2.70 % Fe2O3 |
| |
Silicon 12.68 % Si 27.12 % SiO2 |
| |
Phosphorus 0.03 % P 0.06 % P2O5 |
| |
Hydrogen 0.18 % H 1.65 % H2O |
| |
Neodymium 5.53 % Nd 6.46 % Nd2O3 |
| |
Oxygen 31.25 % O |
| |
Fluorine 1.08 % F 1.08 % F |
| |
- %
F -0.45 % -O=F2 |
| |
______ ______ |
| |
100.00 % 99.95 % = TOTAL OXIDE |
| Empirical Formula: |
Ce1.62La0.93Nd0.42Pr0.14Sm0.03Y0.02Gd0.01Ca0.92Mg1.52Fe2+0.18Fe3+0.37Al1.88Si4.94
P0.01O19(OH)2F0.62O0.38 |
| Environment: |
Material is from a now abandoned Fe mine, the Malmk�rra deposit, which consists of disseminated magnetite-amphibole skarn replacements in marble. Related to epidote group; structure determined. |
| IMA Status: |
Approved IMA 2002 (Dana # Added) |
| Locality: |
Lanthanide mineral deposits in V�stmanland county, Bergslagen mining region, south-central Sweden. Link to MinDat.org Location Data. |
| Name Origin: |
The name is for V�stmanland, the county where the majority of the lanthanide deposits are found. |
| Synonym: |
IMA2002-025 |
| |
