Fluorbritholite-(Y), Bastnäsite-(Ce)
Vyuntspakhk Mt, Western Keivy Massif, Keivy Mountains, Lovozersky District, Murmansk Oblast, Russia
Big rounded grain of Fluorbritholite-(Y) from alkaline granites covered by yellow crust of alteration composed by Bastnasite-(Ce). Associated minerals are pinkish-grey K-Feldspar and Fergusonite-(Y) (on the back side). Size of standard plastic box is 3.4x3.4x3.4 cm. Collected before 1990. Pavel M. Kartashov collection (#3168) and photo.
© Pavel M. Kartashov collection & photo