Standard Values
Kaolinite | 3-15 |
Halloysite 2H2O | 5-10 |
Halloysite 4H2O | 40-50 |
Montmorillonite-group | 70-100 |
Illite | 10-40 |
Vermiculite | 100-150 |
Chlorite | 10-40 |
Glauconite | 11-20+ |
Palygorskite-group | 20-30 |
Allophane | ~70 |
These are the values reported by Carroll (1959) for the cation-exchange capacity of minerals in meq./100g at pH of 7.
Read more about this topic: Cation-exchange Capacity
Famous quotes containing the words standard and/or values:
“Societys double behavioral standard for women and for men is, in fact, a more effective deterrent than economic discrimination because it is more insidious, less tangible. Economic disadvantages involve ascertainable amounts, but the very nature of societal value judgments makes them harder to define, their effects harder to relate.”
—Anne Tucker (b. 1945)
“With the breakdown of the traditional institutions which convey values, more of the burdens and responsibility for transmitting values fall upon parental shoulders, and it is getting harder all the time both to embody the virtues we hope to teach our children and to find for ourselves the ideals and values that will give our own lives purpose and direction.”
—Neil Kurshan (20th century)