mineral

Purple fluorite (likely cubic crystal aggregate)

Fluorite, calcium fluoride (CaF₂)

AI-generated identification · may be incorrect

Translucent purple material with prominent stepped, planar cleavage and glassy luster, strongly consistent with fluorite. Mohs hardness 4; cubic crystal structure; perfect octahedral cleavage; specific gravity about 3.18.

Identified August 9, 2026More mineral →

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Physical properties

Formation & geological history

Forms mainly in hydrothermal veins and replacement deposits, commonly with quartz, calcite, galena, or barite. Fluorite deposits range from Paleozoic to recent geological ages; the specimen’s exact locality and age cannot be determined from the photograph.

Uses & applications

Used industrially as a flux in steelmaking and as a source of fluorine; attractive transparent pieces are cut as gemstones or kept as display specimens. Common material typically sells for modest prices.

Geological facts

Purple color commonly results from color centers or trace impurities and may fade with prolonged sunlight exposure. Its diagnostic cleavage produces flat, reflective surfaces that can resemble glass.

Field identification & locations

Common localities include China, Mexico, the United Kingdom, the United States, and Spain. Confirm with a hardness test against a steel knife or glass, cleavage inspection, and—ideally—specific gravity or chemical testing; avoid damaging valuable faces.