mineral

Green Fluorite

Calcium Fluoride (CaF2)

Hardness: 4 (Mohs scale), Color: Transparent to translucent green, Luster: Vitreous (glassy), Crystal Structure: Isometric/Cubic, Cleavage: Perfect octahedral, Specific Gravity: 3.175-3.56

Identified June 1, 2026More mineral →

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Physical properties

Hardness: 4 (Mohs scale), Color: Transparent to translucent green, Luster: Vitreous (glassy), Crystal Structure: Isometric/Cubic, Cleavage: Perfect octahedral, Specific Gravity: 3.175-3.56

Formation & geological history

Formed through hydrothermal activity in veins where hot, mineral-rich fluids flow through rock fractures. It is often found in association with lead and zinc ores. It can form in various geological ages from Precambrian to Cenozoic.

Uses & applications

Used as a flux in steel making, in the manufacture of hydrofluoric acid, in high-performance telescope and camera lenses, and widely as a semi-precious gemstone for jewelry and decorative carvings.

Geological facts

Fluorite gave its name to the phenomenon of fluorescence because many specimens glow under ultraviolet light. It is often called 'the most colorful mineral in the world' due to its wide range of hues.

Field identification & locations

Identified in the field by its cubic crystal habit, perfect octahedral cleavage, and softness (it can be scratched by a knife but not a copper penny). It is commonly found in China, Mexico, South Africa, and the USA (Illinois/Kentucky).