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Fluorite also called fluorspar is the mineral form of calcium fluoride, CaF2. It belongs to the halide minerals. It crystallizes in isometric cubic habit, although octahedral andplex isometric forms are notmon.
The Mohs scale of mineral hardness, based on scratchparison, defines value 4 as Fluorite.
Pure fluorite is transparent, both in visible and ultraviolet light, but impurities usually make it a colorful