mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Hardness: 3 (Mohs scale), Color: Honey-yellow to pale orange, Luster: Vitreous to waxy, Crystal Structure: Trigonal/Rhombohedral, Cleavage: Perfect rhombohedral

Identified July 9, 2026More mineral →

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Physical properties

Hardness: 3 (Mohs scale), Color: Honey-yellow to pale orange, Luster: Vitreous to waxy, Crystal Structure: Trigonal/Rhombohedral, Cleavage: Perfect rhombohedral

Formation & geological history

Formed through sedimentary processes or hydrothermal precipitation in caves, thermal springs, and marine environments. It often crystallizes from calcium-rich solutions.

Uses & applications

Commonly used for decorative beads, jewelry, and metaphysical collecting. Industrially, calcite is used in cement, agriculture, and optical instruments.

Geological facts

Calcite is famous for its double refraction and perfect cleavage. Yellow varieties specifically are often associated with the solar plexus and mental clarity in holistic circles.

Field identification & locations

Identify by its relative softness (scratched by a copper penny or steel) and vigorous reaction to dilute hydrochloric acid. It is commonly found worldwide, but large deposits are in Mexico and the USA.