mineral

Orange Calcite and White Calcite

Calcium Carbonate (CaCO3)

Hardness: 3 on the Mohs scale; Color: Honey-orange to golden with white banding; Luster: Vitreous to waxy; Crystal Structure: Trigonal/Hexagonal; Cleavage: Perfect rhombohedral; Specific Gravity: 2.71

Hardness: 3 on the Mohs scale
Color: Honey-orange to golden with white banding
Luster: Vitreous to waxy

Identified April 29, 2026More mineral →

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Physical properties

Formation & geological history

Formed through sedimentary processes involving the precipitation of calcium carbonate from solution, often in marine environments or caves as travertine/vugs. The orange color typically comes from iron oxide inclusions.

Uses & applications

Primarily used for ornamental purposes, architectural carvings, decorative towers (points), and as metaphysical stones for collectors. High-purity calcite is used in the manufacturing of cement and lime.

Geological facts

Calcite is one of the most common minerals on Earth, but large towers displaying such distinct banding like this specimen are selectively cut for the 'healing crystal' market. It exhibit double refraction when transparent.

Field identification & locations

Identify in the field by its softness (can be scratched by a copper coin) and strong effervescence when exposed to dilute hydrochloric acid. Commonly sourced from Mexico, Brazil, and the USA.

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