mineral
Calcite
Calcium Carbonate (CaCO3)
AI-generated identification · may be incorrectHardness 3 on the Mohs scale, white or yellow color, vitreous to earthy luster, rhombohedral cleavage, and specific gravity of 2.71.
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Physical properties
Hardness 3 on the Mohs scale, white or yellow color, vitreous to earthy luster, rhombohedral cleavage, and specific gravity of 2.71.
Formation & geological history
Forms via precipitation from aqueous solutions or metamorphism of limestone, spanning various geological eras.
Uses & applications
Used in construction materials, cement production, agriculture, and optical devices.
Geological facts
Calcite exhibits strong double refraction and effervesces readily in dilute hydrochloric acid.
Field identification & locations
Easily identified by its soft hardness, rhombohedral cleavage, and acid fizz test; found globally in sedimentary environments.
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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