mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
AI-generated identification · may be incorrectHardness: 3 on Mohs scale; Color: Pale yellow to golden yellow; Luster: Vitreous to waxy/greasy; Crystal structure: Trigonal/Rhombohedral; Cleavage: Perfect rhombohedral in three directions; Specific gravity: 2.71
- Hardness
- 3 on Mohs scale
- Color
- Pale yellow to golden yellow
- Luster
- Vitreous to waxy/greasy
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Physical properties
Hardness: 3 on Mohs scale; Color: Pale yellow to golden yellow; Luster: Vitreous to waxy/greasy; Crystal structure: Trigonal/Rhombohedral; Cleavage: Perfect rhombohedral in three directions; Specific gravity: 2.71
Formation & geological history
Formed through sedimentary processes, often precipitated from calcium-rich groundwater in caves or hydrothermal veins. It is found in rocks of all geological ages, primarily in limestone and marble environments.
Uses & applications
Used as a decorative stone, in jewelry (carvings/beads), as a source of lime for cement, and widely collected by mineral enthusiasts for its color and optical properties.
Geological facts
Calcite exhibits double refraction; if you place a transparent piece over a line, you will see two lines. Yellow calcite is often used in alternative healing practices to represent the solar plexus chakra.
Field identification & locations
Identify by its 'soapy' feel, rhombohedral cleavage, and extreme softness (can be scratched by a copper penny). It will effervesce (fizz) vigorously when in contact with cold dilute hydrochloric acid. Commonly found in Mexico, USA, and Brazil.
