Magnesium Thiocarbonate, MgCS₃

Berzelius mixed solutions of magnesium sulphate and barium thiocarbonate. The evaporated solution left an amorphous, pale yellow mass of Magnesium Thiocarbonate, MgCS₃, that was partly decomposed by boiling water into magnesium carbonate.

Yellow aqueous solutions result when magnesium hydroxide is shaken with water and carbon disulphide, or magnesium is immersed partly in carbon disulphide and partly in water.