mineral

Green Calcite

Calcium Carbonate (CaCO3)

Hardness: 3 on Mohs scale; Color: Pale green to seafoam green; Luster: Vitreous to waxy; Crystal Structure: Trigonal/Hexagonal; 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

Identified March 15, 2026More mineral →

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Physical properties

Formation & geological history

Formed through sedimentary processes, often precipitated in marine environments or through hydrothermal activity in limestone and marble. Can occur in various geological ages ranging from Precambrian to Cenozoic.

Uses & applications

Used primarily as decorative carvings, tumbled stones for collectors, and in the metaphysical community (thought to promote emotional balance). Industrially, calcite is used in lime production and as a fertilizer.

Geological facts

Calcite is unique for its 'double refraction' property, where light passing through it splits into two rays. Green calcite specifically gets its color from chlorite trapped during the crystallization process.

Field identification & locations

Identify in the field by its softness (can be scratched by a copper coin) and its effervescence (bubbles) when in contact with weak acid like vinegar. Commonly found in Mexico, Brazil, and parts of the USA.