mineral

Green Fluorite

Calcium Fluoride (CaF2)

Hardness: 4 on Mohs scale; Color: Pale green to translucent; Luster: Vitreous (glass-like); Crystal structure: Cubic; Cleavage: Perfect octahedral; Specific gravity: 3.175-3.184

Hardness: 4 on Mohs scale
Color: Pale green to translucent
Luster: Vitreous (glass-like)

Identified May 13, 2026More mineral →

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Physical properties

Hardness: 4 on Mohs scale; Color: Pale green to translucent; Luster: Vitreous (glass-like); Crystal structure: Cubic; Cleavage: Perfect octahedral; Specific gravity: 3.175-3.184

Formation & geological history

Formed through hydrothermal activity, often in veins alongside ores like lead and silver, or in vugs in limestones and dolomites. Can range from ancient Precambrian to more recent geological eras.

Uses & applications

Used in metallurgy as a flux (to lower melting points), in the manufacture of hydrofluoric acid, in high-performance telescopes/camera lenses, and as a popular semi-precious gemstone for jewelry and décor.

Geological facts

Fluorite is famous for its wide range of colors and is known as 'the most colorful mineral in the world.' It exhibits fluorescence under UV light, a property named after the mineral itself.

Field identification & locations

Identified in the field by its distinct green hue, cubic cleavage, and being soft enough to be scratched by a knife but harder than a fingernail. Commonly found in China, Mexico, South Africa, and the USA (Illinois/Kentucky).