Is the primary ore source of silicon that is a semi-metallic or metalloid.

Silicon alloys include a variety of metals, including iron, aluminum, copper, nickel, manganese and ferrochromium.

Ferrosilicon alloys are used to improve the strength and quality of iron and steel. Silicon is used in the aluminum and chemical industries, and in the computer manufacturing business.

Semiconductor-grade silicon is used in silicon chips and solar cells.