Calcium carbonate nanocomposites - ScienceDirect
2012-01-01· Calcium carbonate is one of the most common minerals on earth, making up about 4% of the earth's outer crust. Natural calcium carbonate, which occurs as limestone, chalk, and marble, differs in the degree of whiteness, particle-size distribution, abrasivity, and opacity. All natural calcium carbonate varieties are suitable for the production of calcium carbonate fillers.