description Fluorite Overview
Fluorite is a mineral composed of calcium fluoride and is the principal source of fluorine in industrial processing. It crystallizes in the cubic system and occurs in many colors, including purple, green, yellow, blue, and colorless, sometimes in bands or zones within one specimen. Fluorite has a Mohs hardness of four and commonly forms cubic crystals. Some specimens fluoresce under ultraviolet light, a property named after the mineral.
help Fluorite FAQ
What is fluorite made of?
Fluorite is calcium fluoride, with the chemical formula CaF2. It crystallizes in the cubic system and is the main industrial source of fluorine.
Why does fluorite come in purple, green, yellow, and blue?
Trace elements, defects, and radiation-related changes in the crystal can affect its color. A single specimen may show bands or zones of several colors.
Is fluorite used outside jewelry and collecting?
Yes. It is processed as the principal source of fluorine for products such as hydrofluoric acid and other fluorine chemicals.
How can fluorite be distinguished from quartz?
Fluorite is softer than quartz and has a Mohs hardness of 4, while quartz measures 7. Fluorite also commonly shows cubic crystals or perfect cleavage in four directions.
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