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tetragonalcommonsilicates
Hafnon
(Hf,Zr)SiO4
Very small, brown, single crystals of hafnon are visible in the image. The crystals exhibit a vitreous luster.
Hafnon Physical Properties
Mohs Hardness
7.5Crystal System
tetragonalLuster
vitreousStreak Color
whiteCleavage
indistinct on {110}Fracture
conchoidalSpecific Gravity
6.6Colors
brownTransparency
transparentType Locality
Bernic Lake, Lac-du-Bonnet District, Manitoba, CanadaMineral Group
silicatesUses
collector, scientific-researchAssociated Minerals
quartz, feldspar, spodumene, polluciteRarity
commonGeological Context
Hafnon is an extremely rare hafnium silicate mineral, forming as an end-member of the zircon-hafnon series. It typically occurs in highly evolved granitic pegmatites, where hafnium has become concentrated.
