mineral

Purple fluorite in matrix

Fluorite (CaF₂), likely embedded in a carbonate-rich host rock

AI-generated identification · may be incorrect

Purple, translucent to opaque mass with a vitreous luster; fluorite has Mohs hardness 4 and cubic crystal structure, though crystal faces are not clear in this image. The pale host appears granular and may be limestone or another carbonate rock.

Identified October 4, 2026More mineral →

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Physical properties

Formation & geological history

Fluorite commonly forms from mineral-rich hydrothermal fluids in veins and cavities, often alongside limestone or dolostone. Its age and exact formation setting cannot be determined from the image.

Uses & applications

Fluorite is used as an industrial flux and source of fluorine; attractive specimens are collected and occasionally cut as gemstones.

Geological facts

Fluorite commonly occurs in purple, green, blue, and color-zoned varieties and fluoresces under ultraviolet light in some deposits.

Field identification & locations

The purple color and pale matrix are consistent with fluorite, but a hardness or cleavage test would help confirm it; major deposits occur in China, Mexico, and the United States. The host-rock identification is uncertain from this close-up.