Identification characteristics: Calcite can be identified from hardness 3, diamond cleavage, light color, glass luster and severe bubble encounter with cold dilute HCl. It can also be used for calcium testing. It is very similar to dolomite and is symbiotic. However, dolomite has a significant bubble reaction in hot hydrochloric acid. It differs from meteorites in that it is lighter than meteorites, and the proportion of meteorites is 2.9-5.
Causes of formation: formed in many rocks, limestone and marble are mainly composed of calcite.
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