Apr 24, 2017 · magnesium carbonate (mgco3) is a white solid, readily found in nature as magnesite and which usually occurs in a hydrated form, clustered with water molecules. it has some industrial uses, such as in glass production, but some everyday uses as well. Juiy 17,1916 influence of calcium and magnesium on plant growth 591 the study of chlorophyll and finds it to be a magnesium compound with generally three times as much green pigment as yellow pigment. he found that the magnesium content of chlorophyll was constant in both land and sea plants; therefore, it must function other than as a catalyzer. We are manufacturing magnesium carbonate only from soda ash. which is pure & free from any impurities like. from the desk of the managing director we are proud to be part of specialty marine chemicals producers in india with very high quality and catering to various user industries Variously called dolomitic limestone or just dolomite, garden-grade calcium magnesium carbonate raises the ph level of acidic soils. when ph levels are too low, the basic nutrients most plants need remains locked up in the soil, unavailable to the plants growing in the space. most garden plants prefer a ph range of 6.0 to 6.5.