CALCITE POWDER
Calcite in pulverized form finds use mostly as filler in rubber and textile goods. A considerable quantity is also used in the ceramics industry for the preparation of glazes. Super white quality of calcite in powder form (-300 mesh) is used in the manufacture of paint and distemper. Calcite is now insecticides. It is also used in the manufacture of cement, calcium carbide, metal polish and sometimes also as a fluxing agent. The transparent and clear crystals are used in the optical industry, for the manufacture of nicol prism. Principal characteristics which make iceland-spar of special value for use in optical instruments are its very high birefringence, high degree of purity, perfect crystalline structure and transparency. The mineral must be in pieces at least 25mm. long, 12mm. thick, colourless, transparent and free from cloudy inclusions, cavities, and foreign substances.
Chemical Composition of Calcite Powder
Analysis Report
Calcium Oxide
Cao
58.83
Magnesium Oxide
Mgo
0.232
Silica
SiO2
2.75
Alumina
Al2O3
0.20
Ferric Oxide
Fe2o3
0.14
Titanium Dioxide
TiO2
Nil
Manganese Oxide
MnO
0.026
Sodium Oxide
Na2O
Potassium Oxide
K20
0.006
Loss on ignition
LOI
42.34
Loss on drying
0.10
Chlorides
CI
0.02
Sulphates
SO4
0.04
Alkali ( Water Soluble )
0.12
Carbon dioxide
Co2
42024
Matter insoluble hydrochloric acid
2.50
Portable Composition
Calcium Carbonate
CaCo3
96.00
Magnesium Carbonate
MgCo3