chalk

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inorganic material
<calcium carbonate white pigment>
chalk

red chalk
precipitated chalk
whiting
black chalk

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Categorychalk

SourceArt & Architecture Thesaurus

Overview

A fine-grained limestone, or soft, earthy form of calcium carbonate; used chiefly in putty, crayons, paint, rubber products, linoleum, and as a pigment and abrasive.

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