mineral

Green fluorite (likely)

Fluorite, calcium fluoride (CaF₂)

AI-generated identification · may be incorrect

Translucent vivid green, vitreous luster, likely cubic crystal form with prominent cleavage; Mohs hardness 4 and specific gravity about 3.18. The sharp geometric shape may be a cut or cleaved piece, and visual identification alone is not definitive.

Identified September 7, 2026More mineral →

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Physical properties

Formation & geological history

Fluorite forms in hydrothermal veins and carbonate-hosted deposits when fluorine-rich fluids crystallize in fractures, commonly with quartz, calcite, and sulfides. Deposits range from Paleozoic to recent geological ages.

Uses & applications

Used industrially as a flux in steel and aluminum production and as a source of hydrofluoric acid; transparent colored pieces are collected or cut as decorative stones. It is generally too soft for durable everyday jewelry.

Geological facts

Green fluorite commonly owes its color to trace elements or radiation-related color centers. It can fluoresce strongly under ultraviolet light, often blue, violet, or green.

Field identification & locations

Check for cubic cleavage, glassy luster, softness relative to steel, and possible UV fluorescence; acid testing should be avoided. Common sources include China, Mexico, England, Spain, and the United States.