Name: from the principal content magnesium.
Chemical: MgCO3.
Clades:
Calcites;
Carbonates;
Lapidae.
Crystal structure: Trigonal.
Colour: colourless, white, greyish-white, yellowish, brown, faintly pink, lilac-rose; colourless in transmitted light.
Lustre: vitreous.
Hardness: 3½ - 4½.
Specific gravity: 2.98 - 3.02.
Crystal system: Trigonal.