mineral
Banded fluorite pebble (likely)
Fluorite, CaF₂
AI-generated identification · may be incorrectSmall, naturally rounded pebble with pale green-blue and lilac-pink bands. Fluorite is Mohs 4, vitreous when freshly broken, and cubic in crystal structure with perfect octahedral cleavage; the pictured surface appears weathered or smoothed.
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Physical properties
Small, naturally rounded pebble with pale green-blue and lilac-pink bands. Fluorite is Mohs 4, vitreous when freshly broken, and cubic in crystal structure with perfect octahedral cleavage; the pictured surface appears weathered or smoothed.
Formation & geological history
Fluorite forms when mineral-rich fluids fill fractures and cavities, commonly in hydrothermal veins; the pebble was later rounded by water or abrasion. Its age cannot be determined from the image.
Uses & applications
Fluorite is used as a flux in steelmaking and as a source of fluorine; attractive banded pieces are collected or polished for ornaments.
Geological facts
Color zoning can result from trace elements and changing fluid conditions during crystal growth.
Field identification & locations
The pastel bands and softness are consistent with fluorite, but visual identification is uncertain; hardness and cleavage tests on a fresh surface can help distinguish it. Fluorite occurs worldwide, including China, Mexico, and the United States.
