mineral

Green fluorite crystal

Fluorite (calcium fluoride, CaF₂)

AI-generated identification · may be incorrect

Likely translucent green fluorite with vitreous luster and cubic crystal structure; Mohs hardness 4, perfect octahedral cleavage, and specific gravity about 3.18. The irregular form may be a cleaved or broken crystal, and identification is tentative from the image.

Identified September 15, 2026More mineral →

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Physical properties

Formation & geological history

Forms in hydrothermal veins and carbonate-hosted deposits when fluorine-rich fluids precipitate calcium fluoride, commonly alongside 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 colorful crystals are collected and occasionally cut as gemstones.

Geological facts

Green fluorite can show zoning, fluorescence under ultraviolet light, and color changes caused by trace elements or radiation damage.

Field identification & locations

Common localities include China, Mexico, the United States, England, and Spain. Check for cubic habits, octahedral cleavage, softness, and possible UV fluorescence; glassy green material could also be calcite or glass.