Table 1:
Overview of our sample minerals, their origins and chemical
compositions.
| Mineral name |
Ideal sum formula |
Actual sample composition |
Sample origin |
| picrolite |
Mg6[Si4O10|(OH)8] |
Mg5.84Fe0.17[Si4O10|(OH)8] |
Black Lake Mine, Canada |
| talc |
Mg3[Si4O10|(OH)2] |
Mg3.33Fe0.1[Si4O10|(OH)2] |
Murcia, Spain |
| chamosite |
(Fe,Al)6[(Si3Al)O10|(OH)8] |
Fe3.55Al1.88[Si3AlO10|(OH)8] |
St.Brigitte, France |
| montmorillonite |
(Mg,Al)2[Si4O10|(OH)2] |
Al1.5Mg0.25Fe0.18[Si4O10|(OH)2] |
Wyoming (USA) |
| |
(Na,K,Ca)x . nH2O |
(Na,K)0.06 . 1.2H2O |
|