mineral
Fluorite (or Green Calcite)
Calcium Fluoride (CaF2)
AI-generated identification · may be incorrectMohs hardness 4, pale green to seafoam color, vitreous luster, isometric crystal system with perfect octahedral cleavage, and specific gravity around 3.18.
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Physical properties
Mohs hardness 4, pale green to seafoam color, vitreous luster, isometric crystal system with perfect octahedral cleavage, and specific gravity around 3.18.
Formation & geological history
Formed via hydrothermal processes in veins, often associated with metallic ores, or precipitated in carbonate rocks.
Uses & applications
Used as a flux in steelmaking, in optical lenses, fluorocarbon manufacturing, and as a popular carving or lapidary specimen.
Geological facts
Fluorite gave its name to the phenomenon of fluorescence because many specimens glow vividly under ultraviolet light.
Field identification & locations
Identified by its softness (easily scratched by steel or a copper coin), 4-directional cleavage, and light green translucent appearance. Common in China, Mexico, England, and the USA.
