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silicate anion

1. n. [Drilling Fluids]

The anion, SiO4-4, found in solutions of sodium and potassium silicate, formed by dissolving silica or silicate minerals in NaOH or KOH solutions. Silicate anions form polysilicates, or colloidal silica gel.

Synonyms: sodium silicate

See: buffered mudclaysilicatesilicate mudsilicic acid