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Talc is a mineral group VIII (silicates), according to the classification of Strunz, white to blue gray. In the Mohs scale is taken as a pattern of least hardness, assigning him conventionally value 1. To touch is so greasy or soapy that can be scratched with a fingernail.

Lubricarb® Coated Calcium Carbonate is used widely in polymer composites to improve the physical properties, and allow various functionalities and improved workability. At the same time, the cost of the polymer composites can be decreased greatly by replacing the volume of expensive resin with this filler.

Dolomite is a compound of calcium and magnesium carbonates MgCO₃ and CaCO₃, mainly caused by transformation of the limestone by dolomitisation process, whereby the limestone is enriched in magnesium carbonate because of the replacement of calcium ion by magnesium ion.