mineral

Green Fluorite

Fluorite (Calcium Fluoride, CaF2)

Hardness: 4 on Mohs scale; Color: Pale to deep emerald green; Luster: Vitreous (glassy); Crystal Structure: Isometric (cubic or octahedral); Cleavage: Perfect octahedral in four directions; Specific Gravity: 3.175 to 3.56

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

Identified February 6, 2026More mineral →

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Physical properties

Formation & geological history

Formed primarily in hydrothermal veins often associated with metallic ores (lead, silver, zinc) or in vugs within limestone and dolomite. It crystallizes from circulating hot, mineral-rich underground fluids.

Uses & applications

Used as a flux in steel making, in the manufacture of hydrofluoric acid and opalescent glass, and as high-quality optical lenses. It is also popular in jewelry as a decorative stone and for metaphysical collections.

Geological facts

Fluorite is the basis for the term 'fluorescence,' as many specimens glow under UV light. It is often called 'the most colorful mineral in the world' due to its wide range of hues caused by impurities.

Field identification & locations

Identify in the field by its characteristic octahedral cleavage, cubic habit, and low hardness (can be scratched by a knife but not a copper penny). Common locations include China, Mexico, South Africa, and the Illinois-Kentucky district in the USA.