mineral

Green Fluorite

Calcium Fluoride (CaF2)

Hardness: 4 on Mohs scale; Color: Pale green to mint green; Luster: Vitreous (glassy); Crystal structure: Isometric (cubic); Cleavage: Perfect octahedral; Specific gravity: 3.18

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

Identified May 3, 2026More mineral →

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Physical properties

Hardness: 4 on Mohs scale; Color: Pale green to mint green; Luster: Vitreous (glassy); Crystal structure: Isometric (cubic); Cleavage: Perfect octahedral; Specific gravity: 3.18

Formation & geological history

Formed via hydrothermal activity in veins where fluorine-rich fluids interact with limestone or other calcium-bearing rocks. Usually found in ore-bearing veins across all geological ages.

Uses & applications

Used as a flux in steel making, in the production of hydrofluoric acid, opal glass, and enameled cookware. Gem-quality specimens are used in jewelry and lapidary arts.

Geological facts

Fluorite gave the name to the phenomenon of fluorescence in 1852. It is often called 'the most colorful mineral in the world' due to the wide range of hues it can take from impurities.

Field identification & locations

Identify by its 4-way perfect cleavage and its hardness (it can be scratched by a steel knife). Commonly found in Mexico, China, and the UK (Blue John). Collectors look for well-defined cubic crystals.