Rock Identifier
Fluorite (Calcium Fluoride (CaF2)) — mineral
mineral

Fluorite

Calcium Fluoride (CaF2)

AI-generated identification · may be incorrect

Mohs hardness of 4, vitreous luster, isometric crystal system, perfect octahedral cleavage, and variable colors including green, purple, and blue.

Identified More mineral →
Explore Fluorite in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

Physical properties

Mohs hardness of 4, vitreous luster, isometric crystal system, perfect octahedral cleavage, and variable colors including green, purple, and blue.

Formation & geological history

Formed in hydrothermal veins and sedimentary deposits through the precipitation of fluorine-bearing solutions.

Uses & applications

Used widely in metallurgy as a flux, in the manufacture of optical lenses, and as a popular collector mineral and carving material.

Geological facts

Fluorite is the defining mineral for a hardness of 4 on the Mohs scale and often exhibits strong fluorescence under ultraviolet light.

Field identification & locations

Easily identified by its relatively soft nature, perfect cleavage, and wide range of vibrant colors; commonly found in China, Mexico, and the USA.