mineral
Pale green rough crystal, likely green fluorite
Fluorite (CaF₂), tentative visual identification
AI-generated identification · may be incorrectTranslucent to opaque pale green with a vitreous-to-dull surface and blocky cleavage fragments. Fluorite has Mohs hardness 4 and cubic crystal structure; the image alone cannot confirm the identification.
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Physical properties
Translucent to opaque pale green with a vitreous-to-dull surface and blocky cleavage fragments. Fluorite has Mohs hardness 4 and cubic crystal structure; the image alone cannot confirm the identification.
Formation & geological history
Fluorite commonly crystallizes from hydrothermal fluids in veins and cavities, across many geological ages. This specimen’s locality and age are not determinable from the photograph.
Uses & applications
Fluorite is used as a source of fluorine, in metallurgical fluxes, and as a collectible or decorative mineral; gem-quality material is sometimes cut for jewelry.
Geological facts
Fluorite commonly shows cubic cleavage and may fluoresce under ultraviolet light, though fluorescence is not guaranteed.
Field identification & locations
Look for a hardness near 4, prominent cleavage, and possible cubic faces; confirm with simple tests or a mineral specialist, since pale green calcite and other minerals can look similar. Fluorite occurs worldwide, including China, Mexico, and the United States.
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