Limestone is typically formed over many years at the bottom of oceans or lakes from the accumulation of shells, bones and other calcium rich goods. The calcium in the bones & shells combines with Carbon Dioxide in the water to boom Calcium Carbonate which is the basic mineral structure of all Limestone Limestone are typically used for flooring, wall cladding, vanity tops etc.
Limestone is essentially a Dolomite stone, it shows high resistance in freezing and thawing conditions, which indicate that it can be used in any atmospheric condition without getting affected. Compressive strength of Limestone is 30,000 lbs./ sq. inch, which is the highest strength among the available stone category and can carry a suitable load.
Limestone is a sedimentary rock composed largely of the mineral calcite (calcium carbonate: CaCO3). Limestone often contains variable amounts of silica in the form of chert or flint, as well as varying amounts of clay, silt and sand as disseminations, nodules, or layers within the rock. The primary source of the calcite in limestone is most commonly marine organisms. These organisms secrete shells that settle out of the water column and are deposited on ocean floors as pelagic ooze or alternatively is conglomerated in a coral reef (see lysocline for information on calcite dissolution). Secondary calcite may also be deposited by supersaturated meteoric waters (groundwater that precipitates the material in caves). This produces speleothems such as stalagmites and stalactites. Another form taken by calcite is that of oolites (oolitic limestone) which can be recognised by its granular appearance. Limestone makes up about 10% of the total volume of all sedimentary rocks. |
