mineral
Green fluorite crystal
Fluorite (calcium fluoride, CaF₂)
AI-generated identification · may be incorrectTranslucent pale green crystal with vitreous luster; fluorite has Mohs hardness 4, cubic crystal structure, perfect octahedral cleavage, and specific gravity about 3.18. The image appears to show a small, possibly cut or polished specimen; its crystal habit is not clear.
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Physical properties
Translucent pale green crystal with vitreous luster; fluorite has Mohs hardness 4, cubic crystal structure, perfect octahedral cleavage, and specific gravity about 3.18. The image appears to show a small, possibly cut or polished specimen; its crystal habit is not clear.
Formation & geological history
Forms in hydrothermal veins and cavities, often alongside quartz, calcite, or metallic ores. Fluorite deposits occur across a wide range of geological ages.
Uses & applications
Used as a flux in steelmaking and as a source of fluorine; attractive transparent pieces are cut or polished for jewelry and collected as mineral specimens.
Geological facts
Fluorite can fluoresce under ultraviolet light, a property named after the mineral.
Field identification & locations
Green color and glassy transparency are consistent with fluorite, but color alone cannot confirm identification; its low hardness and distinctive cleavage are useful tests. Common sources include China, Mexico, South Africa, and the United States.
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