My focus is on the calcium carbonate, specifically the mineral form aragonite, which is the most common form used by mollusks. The other common form is calcite.

Aragonite is a form of calcium carbonate, which oceanic creatures like snails use to build their shells. Except in the increasingly hot Eastern Mediterranean, the aragonite is forming abiotically.

Lake experts say this a somewhat rarer aragonite whiting event because of the higher levels of calcium carbonate in the water. Pyramid Lake also just had an algae and plankton bloom, so that's ...

Calcium carbonate, found in nacre, is pervasive, but to understand its defects at the atomic scale, the compound must be exposed to electrons, which can damage its chemical makeup. Using sensitive but ...

Bryozoans are among a diverse range of invertebrates capable of secreting calcium carbonate skeletons. Relatively little is known about biomineralization in bryozoans, despite the importance of ...

Chalk and seashells are made of the same stuff. So why is one crumbly and the other tough?

aragonite: like calcite, a crystallized form of calcium carbonate, but with a different crystal structure that results in more needlelike forms calcite: a crystallized form of calcium carbonate ...

Reef-forming corals are marine animals that produce a hard skeleton made up of aragonite, one form of the mineral calcium carbonate. But how the skeletons grow has remained unclear.

In particular, organisms that build their shells from a type of calcium carbonate known as 'aragonite' are in trouble because aragonite is extremely soluble in sea water.

Reef-forming corals are marine animals that produce a hard skeleton made up of aragonite, one form of the mineral calcium carbonate. But how the skeletons grow has remained unclear.

A new analysis of strontium isotopes in marine sediments has enabled scientists to reconstruct fluctuations in ocean chemistry related to changing climate conditions over the past 35 million years.