The Extension 10 (Lot 1712) copper skarn occurrence lies approximately 200 metres south of the Central Zeballos (MINFILE 092L 212) gold mine in the headwaters of Bibb Creek.

Regionally, the area is underlain by Upper Triassic to Lower Jurassic Bonanza Group basaltic to rhyolitic volcanic rocks. Conformably underlying the Bonanza volcanic rocks are limestones and limy clastics of the Triassic to Lower Jurassic Parson Bay Formation (Bonanza and Vancouver groups) and Upper Triassic Quatsino Formation (Vancouver Group), and tholeiitic basalts of the Upper Triassic Karmutsen Formation (Vancouver Group). Dioritic to granodioritic plutons of the Zeballos intrusion phase of the Jurassic Island Plutonic Suite have intruded all older rocks. The Zeballos stock, a quartz diorite phase of the Eocene to Oligocene Mount Washington Plutonic Suite, is spatially related to gold-quartz veining in the area. Bedded rocks are predominantly northwest striking, southwest dipping, and anticlinally folded about a northwest axis.

Locally, the area is underlain by a roof pendant of Upper Triassic Quatsino Formation (Vancouver Group) limestone that is conformably overlain by Lower Jurassic Bonanza Group volcanic rocks. The limestone lies at the northeast flank contact with granodiorite of the Eocene to Oligocene Zeballos pluton (Mount Washington Plutonic Suite). Skarn-altered rock consists of massive diopside-garnet replacement. At its maximum the skarn zone is 6 metres wide, is traceable along an eastward strike for approximately 300 metres and has been tested by drilling to depth of at least 90 metres. The zone dips 75 degrees north. Magnetite, pyrrhotite and chalcopyrite mineralization occur in addition to the garnet and diopside in the altered limestone.

In 1940, Bancroft reported assays of 7.25 per cent copper and 1.7 grams per tonne gold across a width of 1.5 metres (Geological Survey of Canada Paper 40-12, page 30).

In 1964, three zones averaged 2.2 per cent copper over an average width of 1.98 metres (Assessment Report 18556).

In 1965 and 1966, diamond drilling yielded intercepts of 1.9 grams per tonne gold, 62.4 grams per tonne silver and 2.12 per cent copper over 4.2 metres in hole no. 3; 26.5 grams per tonne silver with 1.56 per cent copper over 1.5 metres in hole no. 1; 12.1 grams per tonne silver and 0.43 per cent copper over 6.0 metres in hole no. 2; 0.33 per cent copper over 9.3 metres in hole no. 4; 5.9 grams per tonne silver and 0.60 per cent copper over 6.6 metres in hole no. 5 and 0.80 per cent copper with 26.0 grams per tonne silver over 4.95 metres in hole no. 10 (Property File – W.M. Sharp [1965-11-04]: Diamond Drill Logs - Central Zeballos).

The 1965 and 1966 exploration work outlined ore blocks E-1 through E-3, yielding an average of 2.19 per cent copper and approximately 31.2 grams per tonne silver over a length of 228 metres and a width of 1.83 metres in the Upper East zone and 2.44 per cent copper over a length of 67.5 metres and width of 2.1 metres in the Lower East zone (Property File - W.M. Sharp [1966-07-07]: Summary Report - Surface Diamond Drilling Program - Central Zeballos-Sonny M.C.'s Prospect - Bibb Creek).

In 1983, samples CZ-102-83 and CZ-103-83 averaged 1.3 grams per tonne gold, 268.2 grams per tonne silver and 11.27 per cent copper (Assessment Report 12077).

The area has been explored since the late 1930s in conjunction with the nearby Central Zeballos (MINFILE 092L 212) past-producing gold mine.

In 1964, the Silver Standard-Granby Prospecting Syndicate completed a program of trenching and sampling before being optioned by Consolidated Skeena Mines Ltd. in 1965. The latter company completing programs of geological mapping, soil sampling, a magnetometer survey and 11 diamond drill holes, totalling 1073.4 metres, on the property.

In 1978, Golden Hinde Mines Ltd. prospected the areas the Paladin group. During 1981 through 1983, Impact Resources Inc. completed programs of geological mapping, prospecting and rock and soil sampling on the Central Zeballos property.

In 1988, Canalaska Resources Ltd. optioned the Central Zeballos property from New Impact Resources Inc. and completed a program of geological mapping, geochemical (rock and soil) sampling and prospecting.

In 2003, Canalska Ventures Ltd. completed a regional program of rock, silt and soil sampling on the area.