mineral

Raw green fluorite (probable)

Fluorite, calcium fluoride (CaF₂)

AI-generated identification · may be incorrect

Pale mint-green, translucent, and glassy with irregular to partly cubic cleavage surfaces; Mohs hardness 4, cubic crystal system, perfect octahedral cleavage, and specific gravity about 3.18. The rough texture and color could also indicate green calcite or aventurine, so confirmation requires testing.

Identified September 7, 2026More mineral →

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Physical properties

Formation & geological history

Forms in hydrothermal veins and cavities, commonly with quartz, calcite, and sulfide minerals; deposits range from Paleozoic to younger geological ages. Green coloration results from trace elements or radiation-related defects.

Uses & applications

Used industrially as a flux in steel and aluminum production and as a source of fluorine; attractive transparent pieces are collected or cut as gemstones. This small rough specimen has modest commercial value.

Geological facts

Fluorite is famous for strong fluorescence under ultraviolet light, although not every specimen fluoresces. Its cubic cleavage and relatively low hardness distinguish it from quartz.

Field identification & locations

Common localities include China, Mexico, the United States, England, and Morocco. Check for cubic cleavage, scratchability with a steel knife, and UV fluorescence; avoid acid testing unless calcite is suspected.