A research team has shown that methanogens, micro-organisms ubiquitous in low-oxygen environments like aquifers, soil and even permafrost, can propel their growth by dissolving calcium carbonate, one ...

A University of Nebraska-Lincoln research team has identified new microscopic players in the global carbon cycle, a discovery ...

CALCIUM carbonate can exist in three polymorphic forms, which in the order of their usual stabilities are calcite, aragonite and vaterite. Calcite is the most stable and the least soluble ...

The two main forms of calcium supplements are calcium carbonate (calcite) and calcium citrate (Citracal). There are other forms of calcium used in supplements, such as calcium gluconate and calcium ...

Liquid calcium supplements come in different forms, including calcium citrate, calcium carbonate, and calcium lactate. Calcium citrate is the most common form of liquid calcium, and it is easily ...

Warm-water coral reefs, for example, occupy shallow sunlit, warm, and alkaline waters in order to grow and calcify at the high rates necessary to build and maintain their calcium carbonate structures.