Definition
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Etymology
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A water-soluble mineral sediment resulting from concentration and crystallization by evaporation from an aqueous solution
From a sediment left after the evaporation
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers
From old English cealc chalk, lime, plaster; pebble, from Greek khalix small pebble, in English transferred to the opaque, white, soft limestone
Fine Grained Rock, Opaque Rock