Fergusonite

Availability

Sold

Size

3 x 2.5 x 2.5 cm - Thumbnail 

Formula

YNbO₄ (RRUFF)

Locality

Berere Pegmatite Field, Bekapaika Commune, Tsaratanàna, Betsiboka, Madagascar

Tagged

REE mineral

A fabulous group of Fergusonite. The chemical formula given below is for Fergusonite-(Y) as I have not had this one tested. On the termination is a fractured off spot, which is actually a good thing since you can see the internal nature. It is metamict, so it doesn't yield any crystal structure internally but the external morphology is preserved.