Copper(II) Carbonate, with the chemical formula CuCO₃, is a blue-green solid that occurs naturally as the mineral malachite. It is commonly used in various applications, including as a pigment in ceramics and glass, and as a precursor in the production of other copper compounds. When heated, Copper(II) Carbonate decomposes to form copper(II) oxide and carbon dioxide. This property makes it useful in chemical reactions and industrial processes. It is important to handle this compound with care, as it can be toxic if ingested or inhaled.