mineral

Green Fluorite

Calcium Fluoride (CaF2)

Hardness: 4 (Mohs scale); Color: Pale green to mint green; Luster: Vitreous (glassy); Crystal Structure: Isometric (cubic); Cleavage: Perfect octahedral; Specific Gravity: 3.18

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

Identified July 21, 2026More mineral →

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Physical properties

Hardness: 4 (Mohs scale); Color: Pale green to mint green; Luster: Vitreous (glassy); Crystal Structure: Isometric (cubic); Cleavage: Perfect octahedral; Specific Gravity: 3.18

Formation & geological history

Formed through hydrothermal activity in veins where hot, fluorine-rich fluids pass through limestone or other host rocks. Common in deposits ranging from Paleozoic to Cenozoic eras.

Uses & applications

Used as a flux in steelmaking and aluminum production, in the manufacture of hydrofluoric acid, and widely as a decorative gemstone or collector's specimen.

Geological facts

Fluorite was the original source of the term 'fluorescence' due to many specimens glowing under UV light, and it is known as 'the most colorful mineral in the world'.

Field identification & locations

Identify in the field by its distinctive cubic crystals or triangular cleavage fragments and its inability to scratch glass but ability to be scratched by a steel knife. Common locations include China, Mexico, and the UK.