	Geology

Melanocratic microgranular enclaves in quartz syenites of the Burgasy pluton (Ulan-Burgasy ridge).	Impregnations of potassium feldspar in biotite granites of the Temen pluton (Angara-Vitim batholith, low Kurba river).	Dykes of trachybasalts, trachytes, trachyrhyolites (Zhirim dyke belt) in limestones of the Bilyutinsky quarry.