mineral

Raw green fluorite (probable)

Fluorite, calcium fluoride (CaF₂)

AI-generated identification · may be incorrect

Translucent blue-green to gray-green, vitreous luster, commonly cubic crystal structure with perfect octahedral cleavage; Mohs hardness 4 and specific gravity about 3.18. The irregular broken surfaces and internal cloudy zoning fit fluorite, though similar green glass or calcite cannot be excluded from the image alone.

Identified August 30, 2026More mineral →

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Physical properties

Formation & geological history

Forms mainly in hydrothermal veins and cavities, often with quartz, barite, and sulfide minerals; deposits range from Paleozoic to younger geological ages. Common localities include China, Mexico, England, Illinois, and Colorado.

Uses & applications

Used industrially as a flux in steel and aluminum production and as a source of fluorine; transparent colorful pieces are collected or cut as decorative stones, but it is relatively soft for everyday jewelry.

Geological facts

Fluorite may fluoresce blue, violet, green, or other colors under ultraviolet light. Cleavage fragments often produce distinctive smooth octahedral faces.

Field identification & locations

Check for cubic/octahedral cleavage, cool glassy luster, and hardness: fluorite scratches with a steel knife but not ordinary glass; calcite effervesces in acid. Avoid heating or impact because cleavage is strong.