smithsonite

noun

A mineral, ZnCO3, sometimes used as a source of zinc.

noun

Native anhydrous zinc carbonate, an important ore of zinc: one of the group of rhombohedral carbonates.

noun

Native zinc carbonate. It generally occurs in stalactitic, reniform, or botryoidal shapes, of a white to gray, green, or brown color. See Note under calamine.

noun

A mineral form of zinc carbonate, ZnCO3, mined as an ore of zinc or as an ornamental stone.