The Zak occurrence is located south west of the Nicoamen River at an elevation of 1350 metres, approximately 3 kilometres northwest of Zakwaski Mountain.
The area is underlain by andesitic volcanic rocks of the Lower Cretaceous Spius Creek Formation (Spences Bridge Group). Granodioritic intrusive rocks of the Permian to Triassic Mount Lytton Complex outcrop to the south.
Locally, an altered granodiorite dike in volcaniclastics hosts rhythmically banded, chalcedonic quartz veins, 1 to 5 centimetres wide, in parallel shear zones. Alteration consists of kaolinite, silica, limonite and ankerite. No sulphide mineralization was reported. The zone has been traced, by hand trenches, for a distance of 75 metres. In 2005, samples from trench DZT05-3 assayed up to 2.27 grams per tonne gold and averaged 1.77 grams per tonne gold over 3.5 metres (Assessment Report 28146). In 2009, sampling yielded values up to 0.524 gram per tonne gold across 4.9 metres, including 3.19 grams per tonne gold across 0.2 metre (Assessment Report 31354).
In 2004, a float sample of iron- stained angular chalcedonic quartz, taken 600 metres northwest of the main zone, assayed 64.87 grams per tonne gold (Sample MC-R194; Assessment Report 28146).
During 2003 through 2016, Almaden Minerals completed programs of silt, soil and rock sampling, trenching, geological mapping and 21.0 line-kilometres of combined ground magnetic and induced polarization surveys on the area as the Zak claims.