mineral

Likely fluorescent mineral specimen

Uncertain; possibly willemite (Zn₂SiO₄) or fluorite (CaF₂)

AI-generated identification · may be incorrect

Small pale green, strongly glowing fragment photographed under ultraviolet light. Fine texture, luster, hardness, cleavage, and crystal form are indeterminate because of severe blur and fluorescence.

Identified August 22, 2026More mineral →

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Physical properties

Small pale green, strongly glowing fragment photographed under ultraviolet light. Fine texture, luster, hardness, cleavage, and crystal form are indeterminate because of severe blur and fluorescence.

Formation & geological history

Willemite commonly forms in zinc-rich hydrothermal ore deposits; fluorite forms in hydrothermal veins and carbonate-hosted deposits. Geological ages vary widely by locality.

Uses & applications

Collected as a fluorescent mineral and occasionally used for mineral displays; fluorite has industrial uses as a flux and fluorine source, while willemite is primarily collectible.

Geological facts

Bright green fluorescence is characteristic of willemite, often enhanced by manganese, though some fluorite and other minerals can appear similar. The visible glow cannot establish identity or prove the specimen is natural.

Field identification & locations

Test under shortwave and longwave UV, then inspect in normal light for color, crystal habit, cleavage, and hardness; chemical or locality information is needed for confirmation. Common sources include New Jersey and Arizona willemite, and Illinois, Kentucky, China, and Mexico fluorite.