mineral
Green fluorite (likely rough fragment)
Fluorite, CaF₂
AI-generated identification · may be incorrectPale green, translucent to opaque, vitreous luster; cubic crystal system with perfect octahedral cleavage. Mohs hardness 4; specific gravity about 3.2. The small, irregular piece makes identification uncertain from appearance alone.
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Physical properties
Pale green, translucent to opaque, vitreous luster; cubic crystal system with perfect octahedral cleavage. Mohs hardness 4; specific gravity about 3.2. The small, irregular piece makes identification uncertain from appearance alone.
Formation & geological history
Forms in hydrothermal veins and cavities, often with quartz, calcite, or sulfide minerals; deposits occur in rocks of many geological ages.
Uses & applications
Collected as a mineral specimen and, when clear and attractive, cut for jewelry; industrial fluorite is a source of fluorine and flux in metal processing.
Geological facts
Fluorite commonly fluoresces under ultraviolet light, a phenomenon named after the mineral.
Field identification & locations
Look for its glassy luster, relatively low hardness, and characteristic cleavage; green color alone is not diagnostic. Fluorite is found worldwide, including China, Mexico, and the United States.
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