The Duck showing area is near the lower portion of Rollie Creek where it enters the southwest end of Cariboo Lake. Access to the property is via the main Keithley Creek road and then a network of logging roads.
The Duck property is underlain mainly by metasedimentary rocks of the Upper Proterozoic-Paleozoic Snowshoe Group and granitic gneiss of the Devonian-Mississippian Quesnel Lake Gneiss unit. Pyrite accompanied in places by chalcopyrite occurs as strong disseminations and massive lenses in dark grey phyllites of the Snowshoe Group. Pyrite, chalcopyrite, galena and sphalerite occur in quartz veins cutting the phyllite.
In 1988, drillholes D-1, D-2 and D-3 were positioned to intersect the downdip extension of chalcopyrite-sphalerite-pyrrhotite mineralization exposed in black siltites about 60 to 100 metres to the south, in the Rollie Creek canyon. The holes intersected abundant and widespread pyrite and pyrrhotite but only weak and sporadic concentrations of chalcopyrite and sphalerite. The sulphides are disseminated throughout an array of grey, greenish grey, green, dark grey and black phyllites. Some of the green phyllites display a distinct volcanic appearance imparted by recognizable relict feldspar or hornblende grains, moderately coarse fragmental textures and a general lack of bedded structure. In drillholes D-1 and D-3, concentrations of 1768 ppm (0.17 per cent) and 2982 ppm (0.29 per cent) zinc occur respectively over six-metre intervals at the contact between black phyllite and green tuffite. Elsewhere, sphalerite and chalcopyrite appear to have a random distribution throughout the assemblage but only in sufficient concentrations to impart slightly anomalous values to the assayed sections. The highest concentrations of iron sulphide appear to be in the black units. Except where contained in quartz-carbonate veins, the sulphides are very fine grained and not easily seen without magnification even though they may occur in concentrations up to four percent. It should be noted that the black units encountered in these holes consist of various combinations of soft black graphitic schist, dark grey phyllite and hard black siliceous siltite, or quartzite.
The Duck claims were staked in 1987 and 1988 to cover sulphide mineralization observed in dark grey phyllites of the Snowshoe Group. In 1987-88, Gibraltar Mines Limited conducted a geochemical soil survey (1306 soil samples), VLF-EM survey (5.4 kilometres) and completed 7 NQ-size drillholes totalling 1033.9 metres.
