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

Banded Calcite

Calcium Carbonate (CaCO3)

Hardness: 3 on Mohs scale; Color: Cream, white, and grey banding; Luster: Vitreous to pearly; Crystal structure: Trigonal/Rhombohedral; Cleavage: Perfect rhombohedral.

Hardness
3 on Mohs scale
Color
Cream, white, and grey banding
Luster
Vitreous to pearly
Identified More mineral

Identify your own rocks.

Get a report just like this from any photo, free.

Physical properties

Hardness: 3 on Mohs scale; Color: Cream, white, and grey banding; Luster: Vitreous to pearly; Crystal structure: Trigonal/Rhombohedral; Cleavage: Perfect rhombohedral.

Formation & geological history

Formed by the precipitation of calcium-rich waters in caves, hot springs, or through hydrothermal veins. The banding represents different stages of mineral growth and changing chemical impurities.

Uses & applications

Used primarily for ornamental purposes, home decor, metaphysical collecting, and as a source of lime in chemical industries.

Geological facts

Calcite is one of the most common minerals on Earth. It is famous for its double refraction property, where light passing through it splits into two rays.

Field identification & locations

Identified in the field by its softness (can be scratched by a copper coin) and its strong effervescent reaction to cold dilute hydrochloric acid. Commonly found in limestone caves and vein deposits.