mineral

Yellow Calcite

Calcite (Calcium Carbonate, CaCO3)

Hardness: 3 on Mohs scale; Color: Pale yellow to golden honey; Luster: Vitreous to waxy; Crystal structure: Trigonal/Rhombohedral; Cleavage: Perfect rhombohedral; Specific Gravity: 2.71

Hardness: 3 on Mohs scale
Color: Pale yellow to golden honey
Luster: Vitreous to waxy

Identified April 7, 2026More mineral →

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Physical properties

Hardness: 3 on Mohs scale; Color: Pale yellow to golden honey; Luster: Vitreous to waxy; Crystal structure: Trigonal/Rhombohedral; Cleavage: Perfect rhombohedral; Specific Gravity: 2.71

Formation & geological history

Formed in sedimentary environments through chemical precipitation from calcium-rich water, or in hydrothermal veins. It can be found in a wide range of geological ages from Precambrian to Holocene.

Uses & applications

Used in the manufacture of cement and mortar, as a soil conditioner in agriculture, and as a popular decorative stone or healing crystal in metaphysical practices.

Geological facts

Calcite is the most common form of calcium carbonate. Yellow calcite specifically is often associated with self-confidence and hope in folklore.

Field identification & locations

Identify in the field by its softness (can be scratched by a copper coin) and its rhombohedral cleavage. It will effervesce (fizz) instantly when exposed to cold dilute hydrochloric acid.