dolomite or a related mineral occurring as clusters of white or pinkish pearly crystals.

A yellowish-green or yellowish-brown form of dolomite, formerly regarded as a distinct variety.

= dolomite, n. a.

A variety of dolomite containing more than the normal amount of calcium.

a variety of dolomite; also applied to varieties of the allied minerals ankerite and magnesite, and to chalybite or native ferrous carbonate.

A greenish variety of hydrodolomite, containing nickel.

A variety of dolomite occurring in greenish yellow crystals, containing a small percentage of ferrous oxide.

A reddish-white rhombohedral carbonate of calcium, manganese, magnesium, and sometimes iron, belonging to the dolomite group of minerals.

A white carbonate of magnesium and calcium, CaMg3(CO3)4.

a mineral (first identified as an artificial product) with a composition near that of dolomite, CaMg(CO3)2, but an imperfect crystal structure.