Orange Calcite

Physical Properties

Hardness: 3 on Mohs scale; Color: Orange, white, peach; Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal; Cleavage: Perfect rhombohedral; Specific gravity: 2.71

Formation & Geological History

Formed through sedimentary processes or hydrothermal veins. It often precipitates from calcium-rich solutions in caves or marine environments. Some orange varieties gain their color from hematite or iron oxide inclusions.

Uses & Applications

Used primarily as decorative carvings, tumbled stones for metaphysical use, lapidary items, and as a source of calcium in acid neutralization or construction.

Geological Facts

Calcite is one of the most common minerals on Earth. Orange calcite specifically is often called the stone of creativity. It can exhibit double refraction where light passing through it splits into two rays.

Field Identification & Locations

Identify by its relative softness (can be scratched by a copper penny or steel) and its reaction to dilute hydrochloric acid (it will fizz). Found globally with significant deposits in Mexico and Brazil.

Identified on: 5/2/2026

Mode: Standard