mineral

Green Fluorite

Calcium Fluoride (CaF2)

Hardness: 4 on Mohs scale; Color: Translucent pale green; Luster: Vitreous (glassy); Crystal Structure: Isometric (cubic); Cleavage: Perfect octahedral in four directions; Specific Gravity: 3.18.

Hardness: 4 on Mohs scale
Color: Translucent pale green
Luster: Vitreous (glassy)

Identified April 11, 2026More mineral →

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Physical properties

Hardness: 4 on Mohs scale; Color: Translucent pale green; Luster: Vitreous (glassy); Crystal Structure: Isometric (cubic); Cleavage: Perfect octahedral in four directions; Specific Gravity: 3.18.

Formation & geological history

Formed through hydrothermal activity where hot, mineral-rich fluids circulate through fractures in rocks (limestones or granites). It is also found in vugs and cavities of sedimentary rocks. It can form in various geological ages ranging from Precambrian to Cenozoic.

Uses & applications

Industrial uses include acting as a flux for smelting steel (fluorspar) and producing hydrofluoric acid. In jewelry and collecting, it is used for cabochons, carvings, and aesthetic mineral specimens due to its vibrant colors.

Geological facts

Fluorite exhibits fluorescence, glowing under UV light; the term 'fluorescence' was actually named after this mineral. It is often called 'the most colorful mineral in the world' because it occurs in almost every color of the spectrum.

Field identification & locations

Identify in the field by its distinct vitreous luster, moderate weight, and its softness (it can be scratched by a steel nail or copper penny). It is commonly found in Illinois (Missouri-Kentucky fluorspar district), China, and Mexico.