mineral

Green Fluorite

Calcium Fluoride (CaF2)

Hardness: 4 on Mohs scale; Color: Pale to deep green; Luster: Vitreous (glassy); Crystal Structure: Isometric (often cubic or octahedral); Cleavage: Perfect octahedral; Specific Gravity: 3.17 to 3.56

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

Identified May 10, 2026More mineral →

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Physical properties

Hardness: 4 on Mohs scale; Color: Pale to deep green; Luster: Vitreous (glassy); Crystal Structure: Isometric (often cubic or octahedral); Cleavage: Perfect octahedral; Specific Gravity: 3.17 to 3.56

Formation & geological history

Formed through hydrothermal activity in veins alongside lead, zinc, and silver ores, or in vugs in limestone. It can occur in various geological ages depending on the deposit location.

Uses & applications

Used as a flux in steel making, in the production of hydrofluoric acid, in high-performance telescope and camera lenses, and as a popular semi-precious gemstone for jewelry and carvings.

Geological facts

Fluorite is famously known for its fluorescence under ultraviolet light. It is often called 'the most colorful mineral in the world' due to the wide variety of colors it can exhibit.

Field identification & locations

Identify in the field by its distinct cubic crystal habit and its relatively low hardness (can be scratched by a knife but not a copper penny). Commonly found in China, Mexico, South Africa, and the USA (Illinois/Kentucky).