The Cummins Creek Porphyry area is largely underlain by andesitic tuffs of the Lower to Middle Jurassic Hazelton Group and by tuffs and heterolithic breccias of the Eocene Ootsa Lake Group. Some siltstones, greywackes and tuffaceous sandstones belonging to the Hazelton Group also occur on the property. A dioritic stock, dikes and plugs and granite plugs of the Late Cretaceous Bulkley Plutonic Suite intrude the volcanics.

The Porphyry Creek or Cummins Creek Porphyry Zone is a zone of crowded feldspar porphyry with disseminated pyrite and chalcopyrite. This zone comprises intermittent outcrops of compositionally variable monzonite(?) to granodiorite intruding purple and green Hazelton Group andesite along the creek over a distance of 930 metres. A late, relatively unaltered felsic quartz feldspar porphyry (QFP) intrusive sill was also mapped in this area. An associated copper in soil anomaly extends over a 500 by 180 metre area. A similar soil anomaly is present west of the Cummins Creek vein system about 1000 metres north-northeast of the porphyry showing and may represent a covered extension of the zone. Although strong alteration including sheeted pyrite veins is locally present in the creek exposures, a lack of mineralized porphyry-style veining in either creek float or outcrop suggests that the system is not robust enough to represent a drill target.

Chalcopyrite varies from trace to 2 per cent in the crowded porphyry, but was not observed in any other rock types. Alteration appears to consist of minor chlorite-magnetite-pyrite- chalcopyrite. Good exposure of unaltered volcanic and diorite in Cummins Creek east of the altered zone and very sparse outcrop of fresh volcanics on a ridge 200-500 metres south of the altered zone limit the porphyry style mineralization to the south and east. A lack of mapping to the northeast and till cover to the southwest leave the chalcopyrite zone open in both directions. This appears to be a limited zone of mineralization either related to northeast striking dikes or a structurally controlled zone of mineralization. The ground south and west of the Porphyry Zone remains unexplored and the presence of other known vein showings further south suggest that further exploration is warranted in this part of the property.

Rock sampling in 2005 consisted of one chip sample from local talus of the chalcopyrite- pyrite mineralization (sample B386309) and two chip samples of quartz-sericite-pyrite with grey silica-sulphide stockwork. The chalcopyrite bearing sample contained significant but weak copper (680 parts per million) while the one of the grey stockwork samples (B386310) carried significant molybdenum and some weak silver. Sampling in 2005 yielded highs of 0.039 gram per tonne gold, 4.5 grams per tonne silver 0.068 per cent copper and 0.0134 per cent molybdenum (Assessment Report 28028).

Refer to Cummins Creek Veins prospect (093E 100) for common details of area work history.