mineral
Calcite
Calcium Carbonate (CaCO3)
AI-generated identification · may be incorrectMohs hardness of 3, white or colorless, vitreous to pearly luster, trigonal crystal system, perfect rhombohedral cleavage, specific gravity of 2.71.
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Physical properties
Mohs hardness of 3, white or colorless, vitreous to pearly luster, trigonal crystal system, perfect rhombohedral cleavage, specific gravity of 2.71.
Formation & geological history
Formed through precipitation from aqueous solutions, evaporation in marine environments, or as a primary component of biogenic limestone and marble.
Uses & applications
Widely used in construction materials, cement production, agriculture to neutralize acidic soils, and optical equipment.
Geological facts
Calcite is the primary constituent of limestone and marble and exhibits strong double refraction (birefringence).
Field identification & locations
Easily identified by its characteristic rhombohedral cleavage and strong effervescence when exposed to dilute hydrochloric acid.
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Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Granite
Granite (Phaneritic intrusive igneous rock)
igneous