Kategorie sortimentu

Formula

Various chemical formula are given for vermiculite. The general formula given below suggests a typical formula, which has been calculated from 65 vermiculite analyses. 
 

(Na0,21, K0,39 Mg0,19 Ca0,13 6H2O)

(Mg5 Fe+20,2 Fe+3 0,8) [Si5.5 Al2.5 O20] (OH)4 

Where the components in the first set of parenthesis represent the ion-exchangeable layer, the components in the second set of parenthesis compose the cations of the octahedral layer, and the components within the brackets comprise the tetrahedral layer.

 

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