Malachite is neither a metal nor a nonmetal. It's a mineral.

Here's why:

* Minerals are naturally occurring, solid substances with a defined chemical composition and a specific crystal structure. They can be made up of various elements, including metals, nonmetals, and sometimes even organic compounds.

* Malachite specifically is a carbonate mineral, meaning it contains carbonate ions (CO3)2-. Its chemical formula is Cu2CO3(OH)2, which includes copper (a metal) and oxygen, carbon, and hydrogen (nonmetals).

So, while malachite contains metal, it's a mineral itself, not a metal in its pure form.