mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
AI-generated identification · may be incorrectHardness: 3 on Mohs scale; Color: bright yellow to honey gold; Luster: vitreous to waxy; Crystal Structure: Trigonal/Rhombohedral; Cleavage: Perfect rhombohedral in three directions; Specific Gravity: 2.71
- Hardness
- 3 on Mohs scale
- Color
- bright yellow to honey gold
- Luster
- vitreous to waxy
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Physical properties
Hardness: 3 on Mohs scale; Color: bright yellow to honey gold; Luster: vitreous to waxy; 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 can be found in various geological ages depending on the deposit location.
Uses & applications
Used as an ornamental stone, in metaphysical practices for energy cleansing, as a source of calcium in industry, and highly collected by mineral enthusiasts for its color.
Geological facts
Yellow calcite is known for its strong double refraction; if you place a clear piece over printed text, the words appear doubled. It is also often fluorescent under UV light.
Field identification & locations
Identified in the field by its rhombohedral cleavage, softness (can be scratched by a copper penny), and its vigorous effervescence when exposed to cold dilute hydrochloric acid. Commonly found in Mexico, Brazil, and the USA.
