carbonation

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carbonation Chemical weathering process involving a reaction between dilute carbonic acid, derived from the solution in water of free atmospheric and soil-air carbon dioxide, and a mineral. The best-known example is the reaction between limestone (calcium carbonate) and carbonated water (carbonic acid) which yields calcium and bicarbonate ions in solution:CaCO3 + H+ + HCO3-→ Ca+ + 2HCO3-.

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