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

Identified March 30, 2026More mineral →

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Physical properties

Formation & geological history

Formed through sedimentary processes, often precipitated from marine environments or via hydrothermal activity in veins. It can be found in limestone deposits and hot spring environments across various geological eras.

Uses & applications

Mostly used for ornamental purposes, lapidary carvings, metaphysical collecting, and as a calcium source in industrial manufacturing (acid neutralization).

Geological facts

Green calcite often gets its color from chlorite or other mineral inclusions trapped during crystallization. It is known for its 'soapy' or waxy feel compared to many other silicate minerals.

Field identification & locations

Identified in the field by its 3-way rhombohedral cleavage and its vigorous effervescence (bubbling) when exposed to cold dilute hydrochloric acid. Commonly found in Mexico, Brazil, and the USA.