silicate

Example:Granite is a rock that is primarily composed of feldspar, quartz, and mica.

Definition:A common rock-forming mineral that is a silicate containing potassium, sodium, or calcium.

Example:Lenses and optical fibers are made from silicate glass because of its transparency and low absorption of light.

Definition:A glass that forms from the fusion of nearly pure silicate compounds or a mixture of silicates.

Example:Marble, which contains little to no feldspar, can often be distinguished from granite, which may be feldspar-rich.

Definition:A type of rock that contains a significant amount of feldspar, one of the most common silicate minerals.