mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
AI-generated identification · may be incorrectHardness: 3 on Mohs scale; Color: Pale yellow to deep honey gold; Luster: Vitreous to waxy; Crystal Structure: Trigonal/Rhombohedral; Cleavage: Perfect rhombohedral; Specific Gravity: 2.71
- Hardness
- 3 on Mohs scale
- Color
- Pale yellow to deep honey gold
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 3 on Mohs scale; Color: Pale yellow to deep honey gold; Luster: Vitreous to waxy; Crystal Structure: Trigonal/Rhombohedral; Cleavage: Perfect rhombohedral; Specific Gravity: 2.71
Formation & geological history
Formed through sedimentary processes, primarily from the shells and skeletons of marine organisms or as a chemical precipitate in caves (stalactites/stalagmites) and thermal springs.
Uses & applications
Used as an acid neutralizer in chemical industries, a flux in metallurgy, an ornamental stone in carving, and a popular metaphysical specimen for collectors.
Geological facts
Calcite is one of the most common minerals on Earth and the primary component of limestone and marble. High-purity yellow calcite is often translucent and exhibits beautiful double refraction if clear enough.
Field identification & locations
Identify in the field by its rhombohedral cleavage and its vigorous reaction (effervescence) when touched by dilute hydrochloric acid. It can be easily scratched by a copper coin or a knife.
