A
fine grained sedimentary rock. It is primarily composed of
calcium carbonate in the form of calcite or aragonite. Trace
amounts of dolomite, iron oxide, quartz, clay or organic
particles can also be present. Due to these impurities
Limestone can vary in color. It is softer and more easily
worked than marble. It has shown high resistance in freezing
& thawing conditions, which indicate that it can be used
in any atmospheric conditions.
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