mineral

Purple fluorite cluster

Fluorite (calcium fluoride, CaF₂)

AI-generated identification · may be incorrect

Translucent violet fluorite with vitreous luster and prominent cubic cleavage/crystal forms; Mohs hardness 4, cubic crystal system, specific gravity about 3.18. Color commonly results from trace elements, radiation, or color centers.

Identified August 30, 2026More mineral →

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Physical properties

Formation & geological history

Forms mainly in hydrothermal veins and replacement deposits, often with quartz, calcite, barite, or galena; specimens may range from Paleozoic to much younger depending on the deposit.

Uses & applications

Used industrially as a source of fluorine and flux in steelmaking and glass production; attractive crystals are collected and occasionally fashioned into ornaments or cabochons. This specimen is primarily decorative or collectible.

Geological facts

Fluorite’s cubic cleavage can produce distinctive stepped or octahedral fragments, and many specimens fluoresce blue, purple, or green under ultraviolet light.

Field identification & locations

Identify by purple color, glassy luster, cubic geometry, perfect cleavage, and hardness below glass; common localities include China, Mexico, England, Illinois, and Colorado. Avoid impact and harsh cleaning because cleavage planes are easily damaged.