mineral

Green Fluorite

Calcium Fluoride (CaF2)

Hardness: 4 on Mohs scale; Color: transparent to translucent mint green; Luster: Vitreous; Crystal structure: Cubic; Cleavage: Perfect octahedral; Specific gravity: 3.1

Hardness: 4 on Mohs scale
Color: transparent to translucent mint green
Luster: Vitreous

Identified July 20, 2026More mineral →

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Physical properties

Hardness: 4 on Mohs scale; Color: transparent to translucent mint green; Luster: Vitreous; Crystal structure: Cubic; Cleavage: Perfect octahedral; Specific gravity: 3.1

Formation & geological history

Formed in hydrothermal veins typically alongside lead and zinc ores, or in vugs in sedimentary rocks like limestone through mineral-rich hot water deposits.

Uses & applications

Used as a flux in steel making, in the manufacture of opalescent glass, lenses for microscopes/telescopes, and popularized as ornamental spheres or tumbled stones for collecting.

Geological facts

Fluorite is famous for its wide range of colors and is the origin of the term 'fluorescence' because many specimens glow under ultraviolet light.

Field identification & locations

Identified by its softness (can be scratched by a knife but not a copper penny) and its characteristic octahedral cleavage. Commonly found in China, Mexico, and the UK.