Rock Identifier
Green Calcite (Calcium Carbonate (CaCO3)) — mineral
mineral

Green Calcite

Calcium Carbonate (CaCO3)

Hardness: 3 on Mohs scale. Color: Pale to lime green. Luster: Vitreous to waxy. Crystal Structure: Trigonal. Cleavage: Perfect rhombohedral. Specific Gravity: 2.71.

Hardness
3 on Mohs scale
Color
Pale to lime green
Luster
Vitreous to waxy
Identified More mineral

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Physical properties

Hardness: 3 on Mohs scale. Color: Pale to lime green. Luster: Vitreous to waxy. Crystal Structure: Trigonal. Cleavage: Perfect rhombohedral. Specific Gravity: 2.71.

Formation & geological history

Formed through sedimentary processes or hydrothermal activity. Often found in massive forms in sedimentary beds or as a secondary mineral in igneous rocks.

Uses & applications

Commonly used for lapidary work, decorative carvings, metaphysical stones, and sometimes as a source for lime or cement in industry.

Geological facts

Green calcite is often acid-washed to give it a smooth, waxy finish that is popular for collectors. It react vigorously (effervesces) with cold dilute hydrochloric acid.

Field identification & locations

Identify by its softness (can be scratched by a copper penny), rhombohedral cleavage, and waxy texture. Commonly found in Mexico and Brazil.