The Bluenose property is underlain by rocks of the Hadrynian? to Paleozoic Eagle Bay assemblage. These comprise quartzite, marble, hornblende-rich skarn and pink to grey paragneiss. In general, bedding or gneissosity dips at low angles to the east. The rocks are highly deformed and minor tight folds are very abundant.
The North zone is about 91 metres above the lake and is poorly exposed over a length of 91 metres by several pits, cuts and trenches. It occurs in a hornblende-garnet? skarn with limy sections. Pyrrhotite and chalcopyrite are irregularly distributed over a width of at least 6 metres, with some fairly massive sections. A pit, about 30 metres southwest of the main trend of workings, contains abundant malachite and minor chalcopyrite in a hornblende-rich skarn. Coarsely porphyritic dikes trending slightly east of north and dipping steeply, cut paragneiss about 61 metres above this showing.