mineral

Green Fluorite with Galena

Calcium Fluoride (CaF2) with Lead Sulfide (PbS)

Hardness: 4 (Fluorite), 2.5 (Galena); Color: Pale green to translucent sea-green matrix with dark metallic grey galena inclusions; Luster: Vitreous to greasy for fluorite, metallic for galena; Crystal Structure: Cubic/Isometric; Cleavage: Perfect octahedral in 4 directions.

Hardness: 4 (Fluorite), 2
Luster: Vitreous to greasy for fluorite, metallic for galena

Identified July 22, 2026More mineral →

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Physical properties

Formation & geological history

Hydrothermal vein deposit where fluorite and metallic sulfides like galena co-precipitate from hot, mineral-rich underground fluids cooling in limestone host rocks or pegmatites.

Uses & applications

Used primarily as mineral collector specimens, lapidary material, decorative carvings, and historically in metallurgy as a fluxing agent.

Geological facts

Fluorite was the original specimen from which the phenomenon of fluorescence was described and named. When associated with galena, it creates a striking aesthetic contrast between translucent green vitreous crystal and metallic grey cubic ore.

Field identification & locations

Look for its distinctive pale green body color, glassy vitreous to waxy luster, soft hardness (can be scratched by a steel nail), and cubic cleavage, often found in hydrothermal mining districts such as Illinois-Kentucky, USA, or Northern England.

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