mineral

Fluorite (Green)

Fluorite (Calcium Fluoride, CaF2)

Hardness: 4 (Mohs scale), Color: Pale to deep emerald green, Luster: Vitreous (glassy), Crystal Structure: Cubic/Isometric, Cleavage: Perfect octahedral, Specific Gravity: 3.1

Identified April 20, 2026More mineral →

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Physical properties

Hardness: 4 (Mohs scale), Color: Pale to deep emerald green, Luster: Vitreous (glassy), Crystal Structure: Cubic/Isometric, Cleavage: Perfect octahedral, Specific Gravity: 3.1

Formation & geological history

Formed through hydrothermal activity in veins alongside lead and silver ores. Often found as a primary mineral in granite and other igneous rocks, or as secondary deposits in limestone.

Uses & applications

Industrial use as a flux in steel making, source of fluorine for hydrofluoric acid, high-precision optical lenses, and extensively in decorative carvings and metaphysical collection.

Geological facts

Fluorite is famous for the phenomenon of fluorescence; it frequently glows under ultraviolet light. It is often called the 'most colorful mineral in the world' due to the wide variety of trace impurities.

Field identification & locations

Identify in the field by its distinct cubic crystal habit (when not carved), its ability to be scratched by a knife but not a copper penny, and its perfect 4-way cleavage.