Competitive magnesium carbonate products from various magnesium carbonate manufacturers and magnesium carbonate suppliers are listed above, please select quality and cheap items for you. besides, we also provide you with related products such as mgco3 , chemicals , magnesium carbonate light , magnesium , carbonate , light magnesium carbonate ... There are 1,356 mgco3 magnesium carbonate for sale suppliers, mainly located in asia. the top supplying countries or regions are china, india, and belgium, which supply 96%, 2%, and 1% of mgco3 magnesium carbonate for sale respectively. 1,051 mgco3 powder products are offered for sale by suppliers on alibaba, of which carbonate accounts for 76%, food additives accounts for 9%, and oxide accounts for 3%. a wide variety of mgco3 powder options are available to you, such as agriculture grade, food grade, and industrial grade. Calcium magnesium carbonate, also called dolomite, is a naturally occurring double carbonate consisting of a structural arrangement of calcium carbonate caco3 and magnesium carbonate mgco3. the nodular particle shape of dolomite crystals has similarities to marble ones. therefore, dolomite is often present together with marble.