(Песцовые Кейвы)
Eastern part of Keivy chain is composed by aluminous mica-shists undergo metamorphism in granulitic facie environments. The region is famous its staurolite twins and industrial grade deposit of kyanite.
Refs.:
- http://faculty.uml.edu/Nelson_Eby/Research/Kola/Perth%20Abstract.PDF
- http://maurice.strahlen.org/kola/keivy.htm