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Mineralpedia Details for Gadolinite-(Y)

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Gadolinite-(Y)

Gadolinite-(Y)

Formula
Be2Fe2+Y2Si2O10 
Crystal System
Monoclinic 
Crystal Habit
Massive, Crystalline - Poor, Prismatic 
Cleavage
None, None, None 
Luster
Vitreous - Greasy 
Color
brown, green, green black, light green, black 
Streak
greenish gray 
Class
Monoclinic - Prismatic 
Fracture
Splintery 
Hardness
6.5-7 
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Gadolinite-(Y) from Ytterby, Resaro, Vaxholm, Stockholm, Sweden

Gadolinite-(Y)
            from Ytterby, Resaro, Vaxholm, Stockholm, Sweden
Special Info
Type Locality

Black vitreous mass.

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