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Calcium carbonate is the active ingredient in agricultural lime and is produced when calcium ions in hard water react with carbonate ions to form limescale. It has medical use as a calcium supplement or as an antacid , but excessive consumption can be hazardous and cause hypercalcemia and digestive issues.
The impacts of reduced calcium carbonate saturation on marine calcifiers have broader ecological implications, as these organisms play vital roles in marine ecosystems. For example, coral reefs, which are built by coral polyps secreting calcium carbonate skeletons, are particularly vulnerable to changes in calcium carbonate saturation. [14]
Limestone is composed primarily of calcium carbonate, which breaks down into small crystals that mix into the water, reflecting sunlight for a beautiful blue color.
The aragonite needles in carbonate mud are converted to low-magnesium calcite within a few million years, as this is the most stable form of calcium carbonate. [28] Ancient carbonate formations of the Precambrian and Paleozoic contain abundant dolomite, but limestone dominates the carbonate beds of the Mesozoic and Cenozoic. Modern dolomite is ...
Calcium supplements may be a bonus for bone health. But if you’re taking these medications, your supplement might backfire. Calcium supplements may be a bonus for bone health. But if you’re ...
Calcium carbonate thus becomes undersaturated, and structures made of calcium carbonate are vulnerable to calcification stress and dissolution. [95] In particular, studies show that corals, [ 96 ] [ 97 ] coccolithophores, [ 91 ] [ 28 ] [ 98 ] coralline algae, [ 99 ] foraminifera, [ 100 ] shellfish and pteropods [ 101 ] experience reduced ...