mineral

Green Fluorite

Calcium Fluoride (CaF2)

Hardness: 4 on Mohs scale; Color: Pale to deep green; Luster: Vitreous (glassy); Crystal Structure: Cubic/Isometric; Cleavage: Perfect octahedral; Specific Gravity: 3.175-3.184

Hardness: 4 on Mohs scale
Color: Pale to deep green
Luster: Vitreous (glassy)

Identified February 22, 2026More mineral →

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Physical properties

Hardness: 4 on Mohs scale; Color: Pale to deep green; Luster: Vitreous (glassy); Crystal Structure: Cubic/Isometric; Cleavage: Perfect octahedral; Specific Gravity: 3.175-3.184

Formation & geological history

Formed through hydrothermal activity in veins where hot, mineral-rich fluids circulate through host rocks like granite or limestone, often as a gangue mineral in metal ore deposits.

Uses & applications

Used as a flux in steel making, in the production of hydrofluoric acid for aluminum smelting, and high-quality optical lenses. Popular in the metaphysical community and for decorative carvings or jewelry.

Geological facts

Known as 'the most colorful mineral in the world,' Fluorite exhibits strong fluorescence under UV light. It is the namesake for the phenomenon of fluorescence discovered by George Gabriel Stokes in 1852.

Field identification & locations

Identified by its relatively low hardness (can be scratched by a steel knife), glassy luster, and characteristic octahedral cleavage. Commonly found in China, Mexico, South Africa, and the Illinois-Kentucky district in the USA.