Miseak

Lying immediately south of Ekwan (No. 155-00-016) Miseak has not been geologically investigated in detail but appears to consist of two superimposed rings. Screens of country rock granitic gneiss, granodiorite and amphibolite are preserved between gabbro and granite ring intrusions. The earliest rocks are troctolite and olivine and amphibole gabbros. Quartz syenite forms a faulted elliptical ring-dyke and riebeckite-hastingsite granite a 20 km long intrusion on the western margin. Several intrusions of biotite granite within the complex may be peralkaline in places. Among several groups of dykes around the complex are some of carbonate rock, but these seem unlikely to be carbonatites.