mineral
Green fluorite (likely)
Fluorite, CaF₂
AI-generated identification · may be incorrectPale mint-green, translucent with a vitreous to slightly waxy luster and prominent cubic cleavage; Mohs hardness 4. The irregular broken piece does not show diagnostic crystal faces, so identification from the photo is tentative.
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Physical properties
Pale mint-green, translucent with a vitreous to slightly waxy luster and prominent cubic cleavage; Mohs hardness 4. The irregular broken piece does not show diagnostic crystal faces, so identification from the photo is tentative.
Formation & geological history
Fluorite commonly crystallizes from hydrothermal fluids in veins and cavities, often with quartz, calcite, or sulfide minerals. Deposits formed across many geological ages.
Uses & applications
Used as a flux in steelmaking and as a source of fluorine; clear, colorful crystals are collected and occasionally cut for jewelry, though softness limits wear.
Geological facts
Fluorite has a distinctive cubic crystal structure and can fluoresce under ultraviolet light; its name gave fluorescence its name.
Field identification & locations
Look for softness (a steel knife can scratch it) and four-direction cleavage; common sources include China, Mexico, South Africa, and the United States. The image alone cannot confirm the mineral.
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