At the Sabre North showing, pyrite, chalcopyrite and molybdenite occur as disseminations on foliation planes and in fractures in chlorite phyllite, quartz chlorite phyllite and sericite phyllite of the Devonian Skwaam Bay unit of the Eagle Bay assemblage.
Trenching (61 metres), stripping (743 square metres) and 2 percussion-drill holes (152 metres total) were completed in 1972.