mineral
Purple fluorite cluster
Fluorite (calcium fluoride, CaF₂)
AI-generated identification · may be incorrectLikely translucent to opaque purple crystals with vitreous luster and cubic crystal habit; Mohs hardness 4, perfect octahedral cleavage, specific gravity about 3.2. The photo does not show enough detail to confirm the identification.
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Physical properties
Likely translucent to opaque purple crystals with vitreous luster and cubic crystal habit; Mohs hardness 4, perfect octahedral cleavage, specific gravity about 3.2. The photo does not show enough detail to confirm the identification.
Formation & geological history
Fluorite commonly crystallizes from hydrothermal fluids in veins and cavities, often alongside quartz and sulfide ores. Deposits range from ancient to geologically recent.
Uses & applications
Used as a source of fluorine in chemical and metallurgical industries; attractive clusters are collected and sometimes used decoratively.
Geological facts
Fluorite fluoresces under ultraviolet light in some specimens, a property named after the mineral.
Field identification & locations
Purple color and blocky crystals are suggestive; confirm with its softness, cubic habit, and cleavage. Commonly collected from hydrothermal vein districts worldwide, including China, Mexico, and the United States.
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