mineral

Green Fluorite

Calcium Fluoride (CaF2)

Hardness: 4 on Mohs scale; Color: Pale to deep green; Luster: Vitreous (glassy); Crystal Structure: Isometric (cubic/octahedral); Cleavage: Perfect octahedral; Specific Gravity: 3.18

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

Identified July 21, 2026More mineral →

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Physical properties

Hardness: 4 on Mohs scale; Color: Pale to deep green; Luster: Vitreous (glassy); Crystal Structure: Isometric (cubic/octahedral); Cleavage: Perfect octahedral; Specific Gravity: 3.18

Formation & geological history

Formed through hydrothermal activity, often as a vein mineral in metallic deposits or in sedimentary rocks like limestone through circulation of fluorine-bearing fluids.

Uses & applications

Used as a flux in steel making, in the manufacture of hydrofluoric acid, in high-performance optical lenses, and as an ornamental stone or gemstone.

Geological facts

Fluorite was the original source of the phenomenon of fluorescence, which was named after the mineral. Some specimens can glow intensely under UV light.

Field identification & locations

Identified by its relatively low hardness (can be scratched by a knife but not a copper penny) and its distinct cubic or octahedral cleavage. Commonly found in China, Mexico, and the USA.