Massif of subalkaline to alkaline granites on NW border of Ukrainian shield. The main industrial mineral of the deposit is genthelvite.
Ref.:
Yurk Yu.Yu., Gurov E.P., Gurova E.P. (1973) Pecularities of fluorin mineralogy of Ukrainian crystalline shield, - Naukova Dumka, Kiev, pp.184 (in Russian). [Complete mineralogical data on all alumoftorides and fluorite from Perga deposit are given.]