Yellow Calcite (Banded Calcite)

Physical Properties

Hardness: 3 on Mohs scale; Color: Pale yellow to honey gold with white banding; Luster: Vitreous to waxy; Crystal Structure: Trigonal/Hexagonal; Cleavage: Perfect rhombohedral; Specific Gravity: 2.71

Formation & Geological History

Formed through sedimentary processes, typically in marine environments or caves as groundwater rich in calcium carbonate precipitates. This banded variety is often found in stalagmites, stalactites, or vein deposits.

Uses & Applications

Primarily used for decorative purposes, metaphysical collecting, lapidary work (cabochons), and as an ore of calcium in specialized industrial applications.

Geological Facts

Calcite is one of the most common minerals on Earth and the primary constituent of limestone and marble. It exhibits double refraction (birefringence), where light passing through a clear specimen splits into two rays.

Field Identification & Locations

Identify in the field by its softness (can be scratched by a copper coin) and its effervescence (bubbles) when in contact with weak hydrochloric acid. Commonly found in limestone quarries and karst regions worldwide.

Identified on: 5/9/2026

Mode: Standard