Silicon Products [P] Associates manufactures Calcite Mineral. The Calcite Mineral is a carbonate of calcium [CaCo3] containing 56% CaO and 44% CO2. It is one of the important industrial minerals also known by `Cale Spar` pure crystallized transparent variety of calcite which is used in optical instruments using polarized light.
Silicon Products [P] Associates is the supplier of Diatomite Supercel and Activated Carbon. The Calcite Mineral is colourless or white, some times with grey, yellow, blue and red tints. It has vitreous to earthy luster. It can be scratched by knife, hardness-3 and specific gravity is 2.7 it shows conchoidal fracture and is infusible, becoming highly luminous when heated it gives effervescence with evolution of carbon dioxide in cold dilute acid. Calcite Mineral is widely used in optical industry for the manufacture of Nicol prism.
