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Kaolin Calcium carbonate mineral (Ca CO3)
Colorless, white or of different colors. Quite abundant on earth’s crust.

White colored clay which main component is basically kaolinite. Used extensively in ceramics for the making of porcelain objects.

Deposits of pure mineral occur in China, England; and North Carolina in America.
 
Kaolinite (Ca O) Caustic lime, gray or grizzly adulterated by clay, iron oxides and magnesium.
 

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