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zharchikhite

n. (context mineralogy English) A hydroxy fluoride mineral of aluminium that forms colourless, transparent crystals.

Wikipedia
Zharchikhite

Zharchikhite is a mineral, a hydroxy fluoride of aluminium; formula AlF(OH). It forms colourless, transparent crystals. Discovered in 1968, it is named after its original locality, the Zharchinskoya Deposit, which is in Buryatia, Russia.