mineral

Green fluorite (probable)

Fluorite, calcium fluoride (CaF₂)

AI-generated identification · may be incorrect

Pale blue-green, translucent, vitreous luster, and blocky cleavage fragments suggest fluorite. Hardness is Mohs 4; cubic crystal system, perfect octahedral cleavage, and specific gravity about 3.18. The photo alone cannot exclude pale calcite or glassy slag.

Identified August 24, 2026More mineral →

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Physical properties

Formation & geological history

Forms mainly in hydrothermal veins and carbonate-hosted deposits, commonly with quartz, barite, galena, or calcite. Deposits range from Paleozoic to younger; age cannot be determined visually.

Uses & applications

Used industrially as a flux in steelmaking and aluminum production and as a source of fluorine; transparent colorful material is cut for display or jewelry, though it is relatively soft.

Geological facts

Fluorite commonly fluoresces strongly under ultraviolet light, often blue, green, or purple. Color may result from trace elements or radiation-related defects.

Field identification & locations

Look for cubic crystals, octahedral cleavage, relatively low hardness, and a white streak. Common localities include China, Mexico, Illinois/Kentucky, England, Spain, and Namibia; a hardness or UV test is useful.