magnesium silicate

noun Chemistry.
a white powder, 3MgSiO 3 ⋅5H 2 O, with variable hydration, insoluble in water or alcohol, used as a rubber filler, a bleaching agent, an odor absorbent, and in the manufacture of paints and resins.
any silicate containing magnesium, as enstatite, talc, or magnesium trisilicate. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Any of a group of impure magnesium silicate minerals that occur as slender, strong, flexible fibers.
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