The rocks of the area consist of a series of Hadrynian to Lower Cambrian and younger schists and gneisses which have been intruded by a variety of plutonic rocks (age unknown). The schists and gneisses have been folded into a large anticline which plunges moderately to the northeast. Albert Creek follows approximately the axial trace of this anticline so that equivalent rocks are found on both side of Albert Canyon.

The metamorphosed rocks belong to the Lower Cambrian and younger Lardeau Group and Hadrynian to Lower Cambrian Hamill Group. The younger Lardeau Group consists of a succession of phyllites and gneisses with minor limestone bands. The underlying Hamill Group rocks consist of quartzites, quartz mica schists and several limestone bands. Underlying the Hamill Group is hornblende-biotite- quartz-plagioclase gneiss which may represent basement rock thrust up into the overlying metasediments.

Three separate intrusions occur and comprise hornblende biotite diorite, biotite hornblende granodiorite and biotite granite.

Small lenses of skarn are developed in some limestone bands and consist of garnet, diopside with variable amounts of epidote, quartz, calcite, actinolite and vesuvianite.

At the EX 11 occurrence, a continuous band of skarn, averaging 0.9 metre wide, occurs over a distance of 762 metres at the base of a limestone unit that is interlayered with schist and quartzite in the core of an overturned anticline, near the contact with granite and hornblende-biotite-quartz-plagioclase gneiss. The skarn is vaguely banded and consists of garnet, diopside and lesser epidote, quartz, calcite, actinolite and vesuvianite. Minor disseminated pyrite, pyrrhotite, chalcopyrite, molybdenite and scheelite occur in the skarn. Small patches of scheelite are occasionally found in the gneiss and granite, and also on fracture surfaces.