mineral
Green Calcite
Calcium Carbonate (CaCO3)
AI-generated identification · may be incorrectHardness: 3 on Mohs scale; Color: Pale green to lime green; Luster: Vitreous to waxy; Crystal structure: Trigonal; Cleavage: Perfect rhombohedral; Specific gravity: 2.71
- Hardness
- 3 on Mohs scale
- Color
- Pale green to lime green
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 3 on Mohs scale; Color: Pale green to lime green; Luster: Vitreous to waxy; Crystal structure: Trigonal; Cleavage: Perfect rhombohedral; Specific gravity: 2.71
Formation & geological history
Forms through sedimentary processes, chemical precipitation, or in metamorphic environments (marble). It often crystallizes from calcium-rich hydrothermal solutions in rock cavities.
Uses & applications
Used as an ornamental stone, a source of lime in cement, acid neutralization in industry, and highly valued by collectors for its color and metaphysical associations.
Geological facts
Calcite is one of the most common minerals on Earth and exhibits double refraction if clear enough. Green calcite specifically gets its color from chlorite trapped during crystallization.
Field identification & locations
Identified by its softness (scratched by a copper penny), rhombohedral cleavage, and strong effervescence when exposed to weak acids like vinegar. Commonly found in Mexico and Brazil.
