Chemical polymers & minerals
Chalk manufacturing unit
₹999.00
Chalk is a soft, white, porous, sedimentary carbonate rock, a form of
limestone composed of the mineral calcite. Calcite is an ionic salt called
calcium carbonate or CaCO3. It forms under reasonably deep marine
conditions from the gradual accumulation of minute calcite shells
(coccoliths) shed from micro-organisms called coccolithophores.
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