Limestone | Characteristics, Formation, Texture, Uses, & Facts
https://www.britannica.com/science/limestone
WEBMar 31, 2024 · Limestone, sedimentary rock composed mainly of calcium carbonate, usually in the form of calcite or aragonite. It may contain considerable amounts of magnesium carbonate (dolomite) as well; minor constituents also commonly present include clay, iron carbonate, feldspar, pyrite, and quartz.
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