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According To The Average Proportion Of Different Chemical Compositions In
Jul 06, 2017

According to the average proportion of different chemical compositions in 2,485 granite parts of the world, the weight is from weight to light:

sio2-72.4% Al2o3-14.42% K2o-4.12% Na2o-3.69% CaO-1.82% FeO-1.68% Fe2o3-1.22%  MgO-0.71%  tio2-0.30%

p2o5-0.12% MnO-0.5%