It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of calcium carbonate CaCO3. Limestone forms when these minerals precipitate out of water containing …

Dec 18, 2025 · 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 …

Limestone is a sedimentary rock that forms by both chemical and biological processes. It has many uses in agriculture and industry.

Apr 14, 2018 · Limestone is one of the most abundant and widely used sedimentary rocks on Earth. Formed primarily from the skeletal fragments of marine organisms such as corals and mollusks, this …

Limestone is a sedimentary rock that forms from the accumulation of the remains of marine organisms, such as coral and shells, and the precipitation of calcium carbonate from water.

Oct 3, 2012 · Learn about limestone – its calcite or aragonite composition, fossil-rich varieties, formation in marine environments, and industrial uses.

Jul 28, 2017 · Limestone is a sedimentary rock, although it has a hardness of 3-4 Mohs and a density of 2.5 to 2.7 grams per cubic centimeter. The rock is primarily composed of calcite or calcium …