Zinc carbonate is the inorganic compound with the formula . It is a white solid that is insoluble in water. It exists in nature as the mineral smithsonite. It is prepared by treating cold solutions of zinc sulfate with potassium bicarbonate. Upon warming, it converts to basic zinc carbonate (Zn<sub>5</sub>(CO<sub>3</sub>)<sub>2</sub>(OH)<sub>6</sub>).
Structure
180px|thumb|left|Zinc carbonate crystallizes in the same dense motif as [[calcium carbonate. Color code: red = O, green = Zn.]]Zinc carbonate adopts the same structure as calcite (calcium carbonate). Zinc is octahedral and each carbonate is bonded to six Zn centers such that oxygen atoms are three-coordinate.