Fluor-uvite
A rare fluorine-bearing calcium-magnesium tourmaline of boron-enriched contact-metamorphic rocks.
Intro adapted from Wikipedia (CC BY-SA).
Fluor-uvite is an IMA-recognized mineral species in the silicate class, with the chemical formula CaMg₃(Al₅Mg)(Si₆O₁₈)(BO₃)₃(OH)₃F.
It crystallizes in the hexagonal crystal system (space group R3m). It is a member of the Tourmaline structural group.
Key properties: Mohs hardness 7.5; optically uniaxial.
IMA symbol Fluvt, IMA status: approved, named in 1930.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data and a Wikipedia introduction — a full written entry hasn’t been published yet.
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