Chemical Composition - Typical

Silica SiO2

34-40%

Iron(Fe2O3+FeO)

25-31%

Alumina Al2O3

17-21%

Magnesium MgO

5-6%

Calcium CaO

5.0-10.0%

Manganese MnO

0-1.0%

                            Mineralogical Content - Typical

Almandine garnet

 97-98 %

Quartz

 ≤0.2%

Ilmenite

 ≤0.5%

Others

 ≤0.1%

                           Physical Characteristics - Typical

Specific Gravity

 4.0-4.1/cm3

Mohs Hardness  

  7.5+

Acid Solubility (HCL)

  <1.0%

Bulk density  

1.8-1.9 g/cm3

Chloride

10-15ppm(25ppm max)

Colour

 Red & Green

Melting point

1300℃

Grain shape

  Sub angular

Toxic substances

  none

Conductivity   

 25 ms/m