silicate Any salt of silica or of one of the silicic acids.
silicate Any mineral composed of silicates.
Wikipedia
In chemistry, a silicate is a compound consisting of one or more central silicon atoms that are surrounded by electronegative ligands.
The most common silicate species consist of silicon with oxygen as the ligand. Silicate anions, with a negative net electrical charge, must have that charge balanced by other cations to make an electrically neutral compound.
Silicate rock.
In geology and astronomy, the term silicate is used to denote types of rock that consist predominantly of silicate minerals.
On Earth, a wide variety of silicate minerals occur in an even wider range of combinations as a result of the processes that form and re-work the crust. These processes include partial melting, crystallization, fractionation, metamorphism, weathering and diagenesis. Living things also contribute to the silicate cycle near the Earth's surface. A type of plankton known as diatoms construct their exoskeletons, known as tests, from silica. The tests of dead diatoms are a major constituent of deep ocean sediment
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