mineral

Green Fluorite

Calcium Fluoride (CaF2)

Hardness: 4 (Mohs scale); Color: Pale to emerald green; Luster: Vitreous; Crystal Structure: Isometric (cubic/octahedral); Cleavage: Perfect octahedral; Specific Gravity: 3.175 to 3.184

Hardness: 4 (Mohs scale)
Color: Pale to emerald green
Luster: Vitreous

Identified March 4, 2026More mineral →

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Physical properties

Hardness: 4 (Mohs scale); Color: Pale to emerald green; Luster: Vitreous; Crystal Structure: Isometric (cubic/octahedral); Cleavage: Perfect octahedral; Specific Gravity: 3.175 to 3.184

Formation & geological history

Formed primarily in hydrothermal veins often alongside metallic ores; also occurs as an accessory mineral in granites and other igneous rocks during the late stages of cooling.

Uses & applications

Used as a flux in steel making, in the production of hydrofluoric acid, in high-performance telescope lenses, and widely used for jewelry and decorative carvings.

Geological facts

The phenomenon of 'fluorescence' was named after fluorite because many specimens glow under ultraviolet light. It is often called 'the most colorful mineral in the world'.

Field identification & locations

Field identification is based on its cubic form, perfect octahedal cleavage, and its relatively low hardness (can be scratched with a knife but not a copper penny). Common locations include China, Mexico, South Africa, and the UK.