smithsonite
Smith"son*ite, n. Etym: [See Smithsonian.] (Min.) Defn: 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.
Smith"son*ite, n. Etym: [See Smithsonian.] (Min.) Defn: 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.