Biraite-(Ce)
Ust'-Biraya, Biraya Fe-REE ore occurrence, Biraya and Bya Rivers confluence area, Vitim Plateau, Irkutsk Oblast, Russia
Brown grains of Biraite-(Ce) of the first generation. Small size, light brown colour, transparency and replacement by Hydroxylbastnasite-(Ce) are charecteristic for this generation. Associating minerals are: brownish-black Ferriallanite-(Ce), marine-green fibrous sodian Actinolite, white strontian Calcite, light-greenish apatite-like calcian ...
© Pavel M. Kartashov collection & photo