Chemical
and Mineralogic Composition of Wyoming Bentonite
#1 Blue
Commercial Grade Ore
Element
Percentage
Silicon
29.8
Aluminum
10.6
Iron
2.6
Magnesium
1.4
Calcium
0.69
Sodium
1.80
Potassium
0.42
Hydrogen
1.19
Oxygen
51.5
Total
100.0
Mineral Composition of a Typical Wyoming Bentonite
Mineral
Percentage
Sodium montmorillonite
92.0
Quartz
4.0
Feldspar (albite)
3.0
Biotite
1.0
Total
100.0
