| |
 |
Cassagnaite Mineral Data
|
|
|
General Cassagnaite Information
|
 Chemical Formula: |
(Ca,Mn++)4(Fe+++,Mn+++,Al)4(OH)4(V+++,Mg,Al)2(O,OH)4(Si3O10)(SiO4)2 |
| Composition: |
Molecular Weight = 996.28 gm |
| |
Calcium 13.28 % Ca 18.57 % CaO |
| |
Magnesium 1.46 % Mg 2.43 % MgO |
| |
Manganese 11.58 % Mn 4.98 % MnO / 11.09 % Mn2O3 |
| |
Aluminum 4.06 % Al 7.68 % Al2O3 |
| |
Vanadium 3.58 % V 5.27 % V2O3 |
| |
Iron 8.97 % Fe 12.82 % Fe2O3 |
| |
Silicon 14.66 % Si 31.36 % SiO2 |
| |
Hydrogen 0.66 % H 5.88 % H2O |
| |
Oxygen 41.75 % O |
| |
______ ______ |
| |
100.00 % 100.08 % = TOTAL OXIDE |
| Empirical Formula: |
Ca3.3Mn2+0.7Fe3+1.6Mn3+1.4Al1.5V3+0.7Mg0.6Si5.2O26H6.5 |
| Environment: |
Found in fractures in braunite + quartz layered mineralization, together with piemontite. |
| IMA Status: |
Approved IMA 2006 (Dana # Added) |
| Locality: |
Cassagna mine, Val Graveglia, eastern Liguria, northern Apennines, Italy. Link to MinDat.org Location Data. |
| Name Origin: |
Named after the locality. |
| Synonym: |
IMA2006-019a |
| |