mineral
Fluorite
Calcium Fluoride (CaF2)
AI-generated identification · may be incorrectHardness of 4 on the Mohs scale, varied colors including purple, green, yellow, and clear, vitreous luster, isometric crystal system, perfect octahedral cleavage, specific gravity of 3.18
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Physical properties
Hardness of 4 on the Mohs scale, varied colors including purple, green, yellow, and clear, vitreous luster, isometric crystal system, perfect octahedral cleavage, specific gravity of 3.18
Formation & geological history
Forms in hydrothermal veins, often associated with metallic ores like lead and zinc, as well as in cavities of limestone and dolostone.
Uses & applications
Used in metallurgy as a flux, in the manufacture of optical equipment, and widely collected and carved into ornamental objects and jewelry.
Geological facts
Fluorite is the mineral namesake for fluorescence, as many specimens glow under ultraviolet light due to impurities like yttrium.
Field identification & locations
Easily identified by its relatively low hardness (can be scratched by a copper penny) and perfect octahedral cleavage. Common localities include China, Mexico, South Africa, and the UK.
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Granite
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Septarian Pebble
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