Euxenite-(y)
Euxenite-(Y)
A variety of Euxenite Group
What is Euxenite-(y)?
Euxenite or euxenite-(Y) (a correct mineralogical name) is a brownish black mineral with a metallic luster.
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Key Characteristics
Formation of Euxenite-(y)
It occurs in granite pegmatites and detrital black sands. It is found in many locations worldwide, notably its type locality in Jølster, Sunnfjord, Norway. Other locations include the Ural Mountains of Russia; Sweden; Minas Gerais, Brazil; Ampangabe, Madagascar; Ontario, Canada; and in Arizona, Wyoming and Colorado in the US.
Quick Facts
Physical Properties
- Color
- Black, greenish or brownish tint at times
- Hardness (Mohs)
- 5.5 - 6.5
- Density
- 5.16 g/cm³
- Streak
- Yellowish, grayish, reddish brown
Chemical Properties
- Chemical Formula
- (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 Usually the sum (Nb+Ta) is close to Ti, in other words (Nb+Ta)/Ti ~ 1. Synthetic end-member: YTiNbO6
- Elements
- Ca, Ce, Nb, O, Ta, Th, Ti, U, Y
Also Known As
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