mineral

Green Fluorite

Fluorite (Calcium Fluoride, CaF2)

AI-generated identification · may be incorrect

Hardness of 4 on the Mohs scale, vitreous (glassy) luster, isometric/cubic crystal system, perfect octahedral cleavage, pale mint-green to deep green, translucent to transparent

Identified July 26, 2026More mineral →

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Physical properties

Hardness of 4 on the Mohs scale, vitreous (glassy) luster, isometric/cubic crystal system, perfect octahedral cleavage, pale mint-green to deep green, translucent to transparent

Formation & geological history

Formed in hydrothermal veins, often in association with lead, zinc, and silver ores, as well as in granite pegmatites and metamorphic rocks.

Uses & applications

Used as a flux in steel smelting, production of hydrofluoric acid and opal glass, optical lenses for microscopes and telescopes, lapidary carvings, and mineral collections.

Geological facts

Fluorite gave its name to the phenomenon of fluorescence because many specimens glow brightly under ultraviolet light. It comes in almost every color of the rainbow, often earning it the nickname 'the most colorful mineral in the world'.

Field identification & locations

Identified by its soft hardness (can be scratched by a steel nail/coin), four directions of perfect cleavage creating octahedral cleavage fragments, vitreous luster, and triangular/cubic growth patterns. Commonly found in China, Mexico, South Africa, the UK, and the USA (Illinois, Kentucky).