mineral
Green Calcite
Calcium Carbonate (CaCO3)
Hardness: 3 on Mohs scale; Color: Pale green to seafoam green; Luster: Vitreous to waxy; Crystal structure: Trigonal/Rhombohedral; Cleavage: Perfect rhombohedral in three directions; Specific gravity: 2.71
- Hardness
- 3 on Mohs scale
- Color
- Pale green to seafoam green
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 3 on Mohs scale; Color: Pale green to seafoam green; Luster: Vitreous to waxy; Crystal structure: Trigonal/Rhombohedral; Cleavage: Perfect rhombohedral in three directions; Specific gravity: 2.71
Formation & geological history
Formed in sedimentary environments through chemical precipitation or in metamorphic environments as marble. The green color is often caused by chlorite or other mineral inclusions trapped during cystallization.
Uses & applications
Primarily used as decorative stones, metaphysical 'healing' crystals, and as a source for lime/cement in industrial applications. Low-grade specimens are used in construction.
Geological facts
Calcite is unique because it will effervesce (fizz) vigorously when in contact with weak acids like vinegar. It is one of the most common minerals on Earth's crust.
Field identification & locations
Identify by its waxy feel, rhombohedral cleavage, and low hardness (can be scratched by a copper penny). Commonly found in Mexico, Brazil, and the USA.
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