| |
 |
Bradaczekite Mineral Data
|
|
|
General Bradaczekite Information
|
 Chemical Formula: |
NaCu4(AsO4)3 |
| Composition: |
Molecular Weight = 686.00 gm |
| |
Sodium 4.02 % Na 5.42 % Na2O |
| |
Zinc 0.95 % Zn 1.19 % ZnO |
| |
Copper 34.27 % Cu 38.59 % Cu2O |
| |
Arsenic 32.76 % As 50.26 % As2O5 |
| |
Oxygen 27.99 % O |
| |
______ ______ |
| |
100.00 % 95.45 % = TOTAL OXIDE |
| Empirical Formula: |
Na1.2Cu3.7Zn0.1(AsO4)3 |
| Environment: |
Fumarolic sublimate product. Alluaudite-wyllieite group; structure |
| IMA Status: |
Approved IMA 2000 (Dana # Added) |
| Locality: |
North Breach of the Tolbachik Great fissure eruption, Kamchatka Peninsula, Russia. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Hans Bradaczek (1940-), crystallographer of the Free University of Berlin. |
| Synonym: |
IMA2000-002 |
| |