Carbonates are sedimentary rocks composed of calcite (or occasionally aragonite), CaCO<sub>3</sub>, and dolomite,CaMg(CO<sub>3</sub>)<sub>2</sub>. These rocks are called limestone and dolomite (formerly dolostone) respectively. When metamorphosed these become marble.
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[http://www.geologyrocks.co.uk/tutorials/introduction_to_carbonates Carbonates] are sedimentary rocks composed of calcite (or occasionally aragonite), CaCO<sub>3</sub>, and dolomite,CaMg(CO<sub>3</sub>)<sub>2</sub>. These rocks are called limestone and dolomite (formerly dolostone) respectively. When metamorphosed these become marble.
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[[Category:Sedimentology and stratigraphy – carbonate]]
[[Category:Sedimentology and stratigraphy – carbonate]]