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RM547   Bastnäsite-(Ce) with allanite-(Ce) and Dolomite

Trimouns talc quarry, Luzenac, Ariège, Midi-Pyrénées, France

A single and sharp crystal of bastnäsite-(Ce) showing tabular hexagonal shape. They show a good transparency and color that varies between yellow-green to orange-brown, depending on the type of the light that strikes them. Accompanied by corroded allanite-(Ce) as usual in this paragenesis. This specimen is from a French worldwide classic mine for Rare Earth Elements (REE) species: Trimouns. Currently it is not easy to find bastnäsite-(Ce) specimens from this mine and with this crystal size.

Size: 5,9 x 4,8 x 3,3 cm.
Main crystal: 6 x 5 x 1 mm.
Found in 2006.

It shows Pleochroism