mineral

Green Fluorite

Calcium Fluoride (CaF2)

Hardness of 4 on the Mohs scale, typically green with occasional purple zoning, vitreous luster, isometric crystal system with distinct octahedral cleavage, and a specific gravity of around 3.18.

Identified August 2, 2026More mineral →

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Physical properties

Hardness of 4 on the Mohs scale, typically green with occasional purple zoning, vitreous luster, isometric crystal system with distinct octahedral cleavage, and a specific gravity of around 3.18.

Formation & geological history

Formed mainly in hydrothermal veins, often associated with metallic ores like lead and zinc, as well as in cavities in sedimentary rocks.

Uses & applications

Used in the manufacturing of hydrofluoric acid, as a flux in steelmaking, in optics for specialized lenses, and as a popular decorative or collector mineral.

Geological facts

Fluorite is the mineral definition of hardness 4 on the Mohs scale and exhibits strong fluorescence under ultraviolet light, a phenomenon named after the mineral itself.

Field identification & locations

Easily identified by its relatively low hardness (can be scratched easily with a knife), perfect cleavage forming octahedral shapes, and often striking green or purple coloration.