mineral

Green Fluorite

Calcium Fluoride (CaF2)

Hardness: 4 (Mohs scale), Color: Pale green to translucent, Luster: Vitreous (glassy), Crystal Structure: Cubic/Isometric, Cleavage: Perfect octahedral, Specific Gravity: 3.175–3.184

Identified May 2, 2026More mineral →

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Physical properties

Hardness: 4 (Mohs scale), Color: Pale green to translucent, Luster: Vitreous (glassy), Crystal Structure: Cubic/Isometric, Cleavage: Perfect octahedral, Specific Gravity: 3.175–3.184

Formation & geological history

Commonly forms in hydrothermal veins where cooling fluids deposit minerals, or as an accessory mineral in granitic and other igneous rocks due to late-stage volcanic activity.

Uses & applications

Used in the manufacture of hydrofluoric acid, as a flux in steel making and aluminum smelting, and high-quality specimens are used for semi-precious ornaments and jewelry.

Geological facts

Fluorite is often called 'the most colorful mineral in the world.' It is the primary mineral used to define hardness scale 4 and gave its name to the phenomenon of fluorescence.

Field identification & locations

Identify in the field by its cubic crystals, octahedral cleavage, and softness (it can be scratched by a pocket knife). Often found in association with lead and silver ores.