mineral
Tumbled green fluorite
Fluorite (calcium fluoride, CaF₂)
AI-generated identification · may be incorrectTranslucent pale green with a vitreous luster and visible internal fractures; hardness 4 Mohs, cubic crystal system, perfect octahedral cleavage, specific gravity about 3.2. The smooth shape is from tumbling rather than natural crystal growth.
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Physical properties
Translucent pale green with a vitreous luster and visible internal fractures; hardness 4 Mohs, cubic crystal system, perfect octahedral cleavage, specific gravity about 3.2. The smooth shape is from tumbling rather than natural crystal growth.
Formation & geological history
Fluorite precipitates from hydrothermal fluids in veins and cavities, commonly alongside quartz, calcite, and metal ores; deposits span many geological ages.
Uses & applications
Used as a flux in steelmaking, a source of fluorine chemicals, and as ornamental or collectible material; softer than most jewelry gemstones.
Geological facts
Fluorite commonly fluoresces under ultraviolet light, a phenomenon named after the mineral.
Field identification & locations
Green color and translucence fit fluorite, but visual identification is not definitive; its low hardness and tendency to scratch easily help distinguish it. Major deposits occur in China, Mexico, South Africa, and the United States.
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