mineral

Green Fluorite

Fluorite (Calcium Fluoride, CaF2)

Hardness: 4 (Mohs scale); Color: Pale to deep green; Luster: Vitreous; Crystal system: Isometric/Cubic; Cleavage: Perfect octahedral; Specific gravity: 3.18

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

Identified April 6, 2026More mineral →

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Physical properties

Hardness: 4 (Mohs scale); Color: Pale to deep green; Luster: Vitreous; Crystal system: Isometric/Cubic; Cleavage: Perfect octahedral; Specific gravity: 3.18

Formation & geological history

Formed through hydrothermal activity, often in veins associated with lead and zinc ores or in hot spring deposits. It can occur in various geological environments from sedimentary to igneous pegmatites.

Uses & applications

Used as a flux in steel making, in the manufacture of hydrofluoric acid, in high-performance telescopes and camera lenses, and widely as a decorative stone and for jewelry/lapidary work.

Geological facts

Fluorite is famously fluorescent under UV light. It is often called 'The Most Colorful Mineral in the World' because it appears in almost every color of the rainbow besides green.

Field identification & locations

Identify in the field by its characteristic 4 directions of perfect cleavage (forming octahedrons) and its relative softness (can be scratched by a pocket knife). It is found globally with major deposits in China, Mexico, and the USA (Illinois/Kentucky).