Dolomite

Dolomite is a double carbonate of calcium and magnesium and it exhibits a granular structure. It has high natural whiteness and its noted for their ease of dispersion. Its use improves properties such as wheatherability, reduces shrinkage, fissure development and water absorption .

Dolomite was named for the French mineralogist Deodat de Dolomieu. The mineral dolomite is commonly found in deposits of a sedimentary rock called dolostone. There are two types of materials often called dolomite, a true chemically uniform calcium magnesium carbonate with the chemical formula CaMg(CO3)2, and a dolomitic limestone, which is just an irregular mixture of calcium and magnesium carbonates.

 
    D1 D2
 Calcium Oxide  CaO  29.4% ( + 1% )  53.76%
 Magnesium Oxide  MgO  18.4% ( + 1% )  0.70%
 Silica  SiO2   7.5% ( + 1% )  1.64%
 Alumina  Al2O3  0.24% ( + 0.05% )  0.24%
 Ferric Oxide  Fe2O3  0.48% ( + 0.05% )  0.18%
 Loss On Ignition  LOI  43.3% ( + 2% )  43%
 Probable Composition
 Calcium Carbonate  CaCO3  52.5% ( + 2% )  96%
 
 
Feldspar - Quartz - Dolomite - Mica
 
 
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