| |
 |
Irtyshite Mineral Data
|
|
|
General Irtyshite Information
|
 Chemical Formula: |
Na2(Ta,Nb)4O11 |
| Composition: |
Molecular Weight = 901.74 gm |
| |
Sodium 5.10 % Na 6.87 % Na2O |
| |
Tantalum 70.23 % Ta 85.76 % Ta2O5 |
| |
Niobium 5.15 % Nb 7.37 % Nb2O5 |
| |
Oxygen 19.52 % O |
| |
______ ______ |
| |
100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Na2Ta3.5Nb0.5O11 |
| Environment: |
Granitic pegmatites. |
| IMA Status: |
Approved IMA 1985 |
| Locality: |
Irtysh River area, eastern Kazakhstan. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the locality. |
| Name Pronunciation: |
Irtyshite + Pronunciation  |
| Synonym: |
ICSD 201714 |
| |
PDF 38-391 |
| |