| |
 |
Brandtite Mineral Data
|
|
|
General Brandtite Information
|
 Chemical Formula: |
Ca2(Mn,Mg)(AsO4)2•2(H2O) |
| Composition: |
Molecular Weight = 441.30 gm |
| |
Calcium 18.16 % Ca 25.41 % CaO |
| |
Magnesium 1.38 % Mg 2.28 % MgO |
| |
Manganese 9.34 % Mn 12.06 % MnO |
| |
Arsenic 33.95 % As 52.08 % As2O5 |
| |
Hydrogen 0.91 % H 8.16 % H2O |
| |
Oxygen 36.25 % O |
| |
______ ______ |
| |
100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Ca2Mn2+0.75Mg0.25(AsO4)2•2(H2O) |
| IMA Status: |
Valid Species (Pre-IMA) 1888 |
| Locality: |
Harstig mine, Pajsberg near Persberg, Varmland, Sweden. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Georg Brandt (1694-1768), Swedish chemist. |
| Name Pronunciation: |
Brandtite + Pronunciation  |
| Synonym: |
ICSD 36235 |
| |
PDF 29-348 |
| |