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Unique Fluorite on Quartz

Fluorite | ‪#‎Geology
Formula: CaF₂
System: Isometric
Hardness: 4
Colour: various Purple, lilac, ...
Lustre: Vitreous, Dull

From De'an Mine, Wushan, Jiangxi Province, China

Fluorite is the mineral form of calcium fluoride, CaF₂. It belongs to the halide minerals. It crystallizes in isometric cubic habit, although octahedral and more complex isometric forms are not uncommon. The Mohs scale of mineral hardness, based on scratch hardness comparison, defines value 4 as Fluorite.

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