mineral

Green fluorite (likely)

Fluorite, calcium fluoride (CaF₂)

AI-generated identification · may be incorrect

Translucent pale mint-green, vitreous luster, commonly cubic cleavage and crystal structure; Mohs hardness 4, specific gravity about 3.18. The rough, blocky fragment and excellent cleavage fit fluorite, though appearance alone cannot exclude pale calcite or glass.

Identified September 6, 2026More mineral →

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Physical properties

Formation & geological history

Forms mainly in hydrothermal veins and carbonate-hosted deposits, often with quartz, barite, and sulfide minerals. Deposits range from Paleozoic to Cenozoic in age.

Uses & applications

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

Geological facts

Fluorite is famous for vivid purple, green, yellow, and banded colors and for strong fluorescence under ultraviolet light. Green fluorite may fade with prolonged sunlight exposure.

Field identification & locations

Check for distinctive cubic cleavage, moderate softness, and UV fluorescence; a steel knife should scratch it, while glass should not. Common sources include China, Mexico, the United States, England, and Namibia.