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Kobeite-(Y)

#BAC64943
SOLD
Kobeite-(Y) from Ushio mine, Omiya-cho, Kyoto Prefecture, Japan - BAC64943
Kobeite-(Y) from Ushio mine, Omiya-cho, Kyoto Prefecture, Japan - BAC64943

Kobeite-(Y)

#BAC64943
Availability
Sold
Size
2.5 x 2 x 1.3 cm - Thumbnail 
Formula
(Y,U)(Ti,Nb)2(O,OH)6 (RRUFF)
Locality
Ushio mine, Omiya-cho, Kyoto Prefecture, Japan
Tagged
REE mineral

Slender black crystals to 4mm. It is probably metamict as it is composed of uranium and yttrium with titanium and niobium. It is fairly rare.

Radioactive!!

Kobeite-(Y)

Formula
(Y,U)(Ti,Nb)2(O,OH)6 
Crystal System
Isometric 
Crystal Habit
Metamict, Prismatic, Radial 
Cleavage
None, None, None 
Luster
Vitreous - Resinous 
Color
brown, brownish black, dark brown, black 
Streak
reddish brown 
Class
Isometric 
Fracture
Brittle - Conchoidal 
Hardness
5.5 

Data courtesy of Webmineral.

Collection
William & Anne Cook Collection
Special Info
Radioactive!!
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