silicate

Any of numerous compounds containing silicon, oxygen, and one or more metals; a salt of silicic acid.

Any of a large group of minerals, forming over 90 percent of the earth's crust, that consist of SiO₂ or SiO₄ groupings combined with one or more metals and sometimes hydrogen.

Any of a large class of chemical compounds composed of silicon, oxygen, and at least one metal. Most rocks and minerals are silicates.

Any mineral containing the group SiO₄, either isolated, or joined to other groups in chains, sheets, or three-dimensional groups with metal elements. Micas and feldspars are silicate minerals.