Colca is Micro Minerals name for Dolomite products of high purity and whiteness. Chemically Dolomite is a double carbonate of calcium and magnesium and it exhibits a granular structure.

Colca Deluxe has a precise particle size distribution, high natural whiteness and its noted for their ease of dispersion. Colca's use has proven value, as its use improves properties such as wheatherability, reduces shrinkage, fissure development and water absorption .


Specification :
 Product Name Colca
 Mineral                                  Dolomite
 Chemical Formula              CaMg(CO)3
 Grade                              Deluxe
 Specific Gravity                      2.85
 Moh's Hardness                      4.0
 Refractive Index pH Value  1.68
 pH Value  9.5

Chemical Composition

% by Mass

  CaO                          

30.1

  MgO

21.5

  SiO2

4.7

  Fe2O3

0.2

  Al2O3

0.1

  LOI

42.8


Physical Properties

Ultra Fine

 Oil Absorption( g /100 g )        20
 Bulk Density ( g /l) 1200
 Brightness (%) 95

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The Micro Minerals are completely dry when bagged and none of them are hygroscopic. Any moisture content in the micro-minerals is due to existing relative humidity in the atmosphere.
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Particle Size Distribution :
 
 
 

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