mineral

Green Fluorite

Fluorite (Calcium Fluoride, CaF2)

Hardness: 4 on Mohs scale; Color: Pale green to seafoam green; Luster: Vitreous; Crystal structure: Isometric (cubic); Cleavage: Perfect octahedral in four directions; Specific gravity: 3.18

Hardness: 4 on Mohs scale
Color: Pale green to seafoam green
Luster: Vitreous

Identified June 21, 2026More mineral →

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Physical properties

Hardness: 4 on Mohs scale; Color: Pale green to seafoam green; Luster: Vitreous; Crystal structure: Isometric (cubic); Cleavage: Perfect octahedral in four directions; Specific gravity: 3.18

Formation & geological history

Formed in hydrothermal veins typically alongside lead and zinc ores, or in vugs in sedimentary rocks. It can occur in a wide range of geological environments, from volcanic pipes to limestone cavities.

Uses & applications

Used as a flux in steel making, in the manufacture of hydrofluoric acid, in high-performance telescope lenses (lapidary grade), and popular for jewelry and collector specimens.

Geological facts

Fluorite is famous for its fluorescence under UV light; the term 'fluorescence' was actually derived from this mineral. It is often called 'the most colorful mineral in the world'.

Field identification & locations

Identify by its relatively low hardness (can be scratched by a steel knife but not a copper penny) and its characteristic 4-way cleavage which often creates triangular or diamond shapes on fractured surfaces.