Fergusonite-(Y), Fluorite (Var: Yttrofluorite)

Fergusonite-(Y) : YNbO₄, Fluorite (Var: Yttrofluorite) : (Ca_1-xY_x)F_2+x where 0.05< x <0.3

Locality: Hundholmen, Tysfjord, Nordland, Norway

A 0,5 mm dark red, translucent, terminated crystal of fergusonite-Y in colourless yttrofluorite. Hundholmen is the second locality for non-metamict fergusonite-Y in Norway. The specimen was collected by and is in the micromount collection of OT. Ljostad.

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Fergusonite-(Y), Fluorite (Var: Yttrofluorite)

Fergusonite-(Y) : YNbO4, Fluorite (Var: Yttrofluorite) : (Ca1-xYx)F2+x where 0.05< x <0.3

Fergusonite-(Y) : YNbO₄, Fluorite (Var: Yttrofluorite) : (Ca_1-xY_x)F_2+x where 0.05< x <0.3