Eastonite

General Information:
 Chemical Formula:
KMg2Al[Al2Si2O10](OH)2
 Composition:
(Molecular Weight = 418.83 gm)
Potassium 9.34 % K 
Magnesium 11.61 % Mg
Aluminum 19.33 % Al
Silicon 13.41 % Si
Hydrogen 0.48 % H 
Oxygen 45.84 % O 
 Empirical Formula:
KMg2Al3Si2O10(OH)2
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