magnesium carbonate 1 ISO9001-2000 certificated 2 top quality meets CP/USP/EP 3 best service magnesium carbonate1Magnesite and dolomite minerals are used to produce magnesium metal and basic refractory bricks. MgCO3 is also used in flooring, fireproofing, fire extinguishing compositions, cosmetics, dusting powder, and toothpaste. Other applications are as filler material, smoke suppressant in ...