The Kirkham Zone occurs in a Jurassic monzonite to quartz monzonite stock with local granitic phases. This stock intruded into an area underlain by volcanics and sediments of the Unuk River Formation, Hazelton Group. Rocks of all type are intensely altered through the processes of potassic feldspathization, silicification, pyritization, sericitization and chloritization. Subsequently, primary textures, structure and original composition of the rocks have been masked.

Chalcopyrite and pyrite are reported to occur in an area of brecciated intrusive rock. Malachite staining is common and magnetite is locally abundant. A 110 metre sample collected along parallel sampling lines average 0.159 per cent copper, 0.15 grams per tonne gold and 4.55 grams per tonne silver (Bridge et al, 1981).

In 2003, fifteen samples of hornfelsed volcanics averaged 0.151 per cent copper and 0.182 gram per tonne gold, with values of up to 0.349 per cent copper and 0.540 gram per tonne gold (Lechner, M.J. (2007-04-06): Mitchell Creek Technical Report).

Refer to Mitchell (104B 103) for details of the area in which the Kirkham showing occurs and for a common work history for the Sulphurets property.