The most stable form of calcium carbonate and the mineral that limestone and marble are built from. It defines hardness 3 on the Mohs scale and effervesces visibly in weak acid, a standard field test for identifying it. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
Facts
Formation Class Chemical FormulaCaCO3, calcium carbonate 2 Hardness (Mohs)Calcite is the reference mineral that defines the value of 3 on the Mohs scale itself. Classification
Crystal SystemTrigonal (Rhombohedral) 1 Classification UseSculpture and Ornamental 3 Wikipedia 'Calcite' states this use (or use-bearing statement); earth5 pass. Connections
Associated With
Calcite named as one of the most common marine evaporite minerals; cited via evaporite's own registered source since Calcite carries only the generic mineral-wikipedia stub as its own source.
Source Evaporite (Wikipedia)
Skarn typically forms from a carbonate (limestone or marble) protolith, and calcite persists in many skarns.
Classified As
Crystallizes In System
In Discipline
Source Mineral (Wikipedia)
In the Other Atlases
Mineral Species Of
Also in Divinity Atlas: of this mineral species.
Also in Divinity Atlas: of this mineral species.
Sources
1. Calcite (Wikipedia)
2. Mineral (Wikipedia)
Wikimedia FoundationLead sectionQuote, Lead section
The reaction of acid with carbonates, most commonly found as the polymorph calcite and aragonite (CaCO3), relates to the dissolution and precipitation of the mineral, which is a key in the formation of limestone caves, features within them such as stalactite and stalagmites, and karst landforms.
3. Wikidata: Calcite
Wikidata Q171917
Evaporite (Wikipedia)
Wikimedia FoundationAssociated With: Evaporite, Marine evaporite minerals sectionQuote, Associated With: Evaporite, Marine evaporite minerals section
The most common marine evaporites are calcite, gypsum and anhydrite, halite, sylvite, carnallite, langbeinite, polyhalite, and kainite.
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