Abstract:
Limestone is one of the most abundantly available
natural resources on earth. Composed mainly of
calcium carbonate, limestones are divided into the
weathered marine shell, white soft earthy limestone,
sugar calcite and compact limestone depending upon
respective types of formation.
These raw materials are ground as they are for use
as the shell powder, chalk and whiting, or chemically
processed into pure calcium carbonate for various
uses.