Chemical Analysis of Uzbek Vermiculite
|
Silicon oxide |
SiO2 |
41,10 % |
|
Magnesium oxide |
MgO |
16,73 % |
|
Aluminium oxide |
Al2O3 |
12,64 % |
|
Iron Oxide |
Fe2O3 |
9,92 % |
|
Calcium oxide |
CaO |
6,73 % |
|
Potassium oxide |
K2O |
2,92 % |
|
Sodium oxide |
Na2O |
1,83 % |
|
Titanium oxide |
TiO2 |
1,09 % |
|
Sulfur oxide |
SO3 |
0,24 % |
|
Loss on ignition (1000 ° C) |
LOI |
6,96 % |
|
Hydrogen index (ISO 787-9) |
pH |
6,8-7,0 |
The chemical composition of the vermiculite does not change after exfoliation.
Chemical formula of vermiculite
(Mg,Fe++,Al)3(Al,Si)4O10(OH)2•4(H2O)
