Metavolcanics and metasediments of the Devonian part of the Eagle Bay Formation are cut by a small foliated granitic sill. The metamorphic rocks include sericite-quartz phyllite, chlorite- sericite-quartz schist and minor limestone.

Magnetite and pyrite are disseminated in the rocks near the granitic intrusion and galena and pyrite occur in quartz veins within the phyllites.