The Jensen occurrence is located at an elevation of approximately 1920 metres on an east-west–trending ridge, southwest of McConnell Creek and approximately 10 kilometres southeast of the south end of Thorne Lake.

Regionally, the area is cut by a north-trending fault that separates andesitic rocks of the Upper Triassic Savage Mountain Formation (Takla Group) to the west from an undifferentiated package of Upper Triassic volcanics (Takla Group) to the east. Both volcanic packages are represented by aphanitic to porphyritic (feldspar) andesites. The undifferentiated volcanics are cut by a medium-grained gabbro with phenocrysts of plagioclase feldspar and pyroxene. The gabbro may be part of Upper Triassic ultramafic rocks that occur nearby.

The Savage Mountain volcanics are cut by northwest-trending pink porphyritic granodiorite dikes. These dikes contain hornblende and plagioclase phenocrysts in a matrix of quartz, plagioclase and orthoclase. Close to the faults, the matrix is chlorite altered. The dikes terminate against the north-trending fault. A 60-metre pyritic and propylitic envelope exists on either side of the fault. A serpentinite-altered zone is developed around the gabbro intrusion and is more pervasive near the fault. This serpentinization overlaps onto both sides of the fault and is fairly wide-spread near the mafic intrusion.

Locally, chloritized basalts and propylitic-altered andesite host quartz-epidote veins, up to 0.2 metre wide, with pyrite, magnetite, chalcopyrite, pyrite and malachite staining. Mineralization has been intermittently traced along an approximately 600-metre trend. A 0.5-metre wide, epidote-flooded shear zone with minor bornite is also reported in the area. The shear zone strikes 253 degrees and dips 68 degrees.

Work History

In 2021, Wedgemount Resources Corp. completed a program of geochemical (rock and soil) sampling and spectral analysis on the area as the regionally extensive Cookie property. Eight grab samples (D704109 through D704117) collected along 600 metres of the ridge yielded an average of 1.77 per cent copper and 11.4 grams per tonne silver, with values of up to 5.34 per cent copper, 0.24 gram per tonne gold and 48.9 grams per tonne silver (Assessment Report 40029).