Geography, Sofia University ‘St. Kliment Ohridski”, Tsar Osvoboditel Blvd. 15, Sofia 1504, Bulgaria, e-mail:...107, Sofia 1113, Bulgaria, e-mail: kadiyski@gmail.com Ventzislav Rusanov Faculty of Physics, Sofia University...Kliment Ohridski” James Bourchier Blvd 5, Sofia 1164, Bulgaria, e-mail: rusanov@phys.uni-sofia.bg *corresponding...feldspar and aegirine-augite from the Buhovo-Seslavtsi pluton (Bulgaria). Potassicmagnesio-arfvedsonite is...crystal structure, peralkaline rocks, Buhovo-Seslavtsi pluton, Bulgaria. Introduction Amphiboles are among
1 Sofia University, Faculty of Physics, 5 James Bourchier Blvd., 1164 Sofia, Bulgaria 2 Sofia University...Geology and Geography, 15 Tzar Osvoboditel, 1504 Sofia, Bulgaria 3 CNR-Istituto di Geoscienze e Georisorse...peralkaline syenites and granite porphyries from Buhovo-Seslavtsi pluton (Dyulgerov and Platevoet 2006). To the...syenites and granite porphyries from the Buhovo-Seslavtsi pluton (Dyulgerov and Platevoet 2006) in association...porphyries also contain aegirineaugite and scarce biotite. Potassic-magnesio-arfvedsonite occurs as euhedral