A mineral that contains more than one element is called a compound.

Here are some examples:

* Quartz (SiO2): Contains silicon and oxygen

* Feldspar (KAlSi3O8): Contains potassium, aluminum, silicon, and oxygen

* Halite (NaCl): Contains sodium and chlorine

* Calcite (CaCO3): Contains calcium, carbon, and oxygen

Most minerals are actually compounds, as very few minerals are made up of only one element (like native gold or copper).