calcite

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Those stones which show electricity on the application of pressure are such as the fluorspar, calcite, and topaz.

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Definitions (4)

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  1. noun A common crystalline form of natural calcium carbonate, CaCO3, that is the basic constituent of limestone, marble, and chalk. Also called calcspar.

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Examples (50)

  • Contrary to what researchers had expected, they discovered that the transformative state from calcium carbonate to calcite was not uniform. —  Daily Californian Headlines
  • The temperature dependence of Sr coprecipitation with calcite was determined experimentally in solutions with Sr / Ca ratios and ionic strengths closely resembling marine pore fluids. —  CiteULike: Everyone's library
  • Aragonite-to-calcite and dolomite-to-calcite transformations were conducted over a temperature range from 40 degrees to 200 degrees C. Temperature dependence of the distribution coefficient of strontium in calcite (D C Sr) is significant. —  CiteULike: Everyone's library
  • From the graph, it seems that dolomite and calcite are thermodynamically favored (with quartz, kaolinite, etc.) at 300 ppm CO2 at sea level at temperatures colder than 50 deg C —  RealClimate
  • In such cases the cleavage of one stone is often of paramount importance in testing the cleavage of another, as is seen in the perfection of the cleavage planes of calcite, which is used in the polariscope It sometimes happens, however, that false conditions arise, such as in substances which are of no form or shape, and are in all respects and directions without regular structure and show no crystallisation even in the minutest particles; these are called amorphous. —  The Chemistry, Properties and Tests of Precious Stones
 

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Etymologies (1)

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  1. from Latin calx (calc-), lime, + -ite.
 

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/ˈkælsaɪt/
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