Calcium Carbonate - CaCO3 > 99.3%
Magnesium Carbonate MgCO3 < 0.08%
Ferric Oxide Fe2O3 < 0.01%
Acid Insoluble < 0.10%
pH 8.9
Hardness Mohs 3
Specific Gravity 2.7
Colour White
Color
White
Specific gravity
2.85
Solubility
Poorly soluble in dilute
Bulk density
1.06 g/ml
Hardness
3.5-4 Mohs
ZrO2- 60 to 65 %
SiO2 - 30 to 34%
TiO2 - 0.06% max
Fe2O3 - 0.001 % max
High content of SiO2 from 99.5% to 99.9%
Low Fe content upto 0.01%
low content of alkali, or traces
Mohs hardness:7-7.8
Specific Gravity: 2.90-2.8
