A Fizzy Rock
Exploring limestone’s geology, biology, chemistry and uses.
Limestone is the rock that fizzes with acid. It has a biogeochemical origin, a rich agricultural history and is literally ‘fizzing’ with uses and applications.
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Biomineralisation refers to the processes by which living things form minerals. For example, calcium carbonate biomineralisation is used extensively by marine invertebrates to build structures that...
In 2006, NIWA’s research vessel Tangaroa explored for cold-seep sites on New Zealand’s Hikurangi margin. There was some historical evidence for their presence, but this needed to be...
Calcium carbonate crystals present in the inner ear play a key role in our sense of balance and movement. Pearl, a calcium carbonate gemstone, is often used to adorn the body.
Thin section of limestone as seen under the microscope.