Chalk is a soft, white, porous sedimentary carbonate rock, a form of limestone composed of the
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Uppermost Amuri Limestone in the Chalk Range is somewhat indurated and,... | Download Scientific Diagram
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Chalk: A biological limestone formed from shell debris
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Chalk: A biological limestone formed from shell debris
Mineral stone - calcite. A white or colorless mineral consisting of calcium carbonate. It is a major constituent of sedimentary rocks such as limestone, marble, chalk, can occur in crystalline form. Stock-Foto
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