mineral
Fluorite crystal
Fluorite (calcium fluoride, CaF₂)
AI-generated identification · may be incorrectThe specimen appears to be a blue-green, roughly cubic fluorite crystal with a dull-to-glassy luster. Fluorite has Mohs hardness 4, cubic crystal structure, perfect octahedral cleavage, and specific gravity about 3.2; the image is too unclear to confirm its identity or properties.
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Physical properties
The specimen appears to be a blue-green, roughly cubic fluorite crystal with a dull-to-glassy luster. Fluorite has Mohs hardness 4, cubic crystal structure, perfect octahedral cleavage, and specific gravity about 3.2; the image is too unclear to confirm its identity or properties.
Formation & geological history
Fluorite forms when mineral-rich fluids crystallize in veins and cavities, often alongside quartz, calcite, or sulfide ores. Deposits occur across a wide range of geological ages.
Uses & applications
Fluorite is used as a source of fluorine, in steelmaking and chemical production, and as ornamental or collectible crystals.
Geological facts
Fluorite commonly fluoresces under ultraviolet light, a property named after the mineral.
Field identification & locations
Look for a cubic shape, distinctive cleavage, and hardness low enough to be scratched by a steel knife; blue-green color alone is not diagnostic. Major deposits occur in China, Mexico, South Africa, and the United States.
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