The Le Baron 420 occurrence is located in the western head waters of Lens Creek, approximately 3.2 kilometres north of Doe Lake.

The area is underlain by massive volcanic rocks, dominantly basalts and andesites, of the Upper Triassic Karmutsen Formation (Vancouver Group). Overlying these is massive limestone of the Upper Triassic Quatsino Formation (Vancouver Group). The strata has been cut by several stocks and dike/sill swarms ranging in composition from diorite to aplite and dacite, sometimes feldspar- phyric. These rocks are bounded to the north, east and south by a large mass of intrusive rock of the Lower to Middle Jurassic Island Plutonic Suite.

Locally, several skarn showings have been developed in both the volcanic and limestone units at or near intrusive contacts. The skarns contain varying amounts of sulphides, locally massive. Mineralization is typically podiform, discontinuous and leached. Two types of skarns have been developed: 1) garnet, actinolite ±chalcopyrite and pyrite in limestone adjacent dacite dikes and 2) massive magnetite, chalcopyrite and pyrite with lesser amounts of garnet, epidote, actinolite and quartz in basalt or basaltic tuff.

In 2005 through 2009, Le Baron Prospecting completed programs of geochemical sampling and prospecting on the area as the Doe Lake project. In 2009, ten road side grab samples (samples 42 through 51) from chalcopyrite- mineralized exposures yielded values of 0.216 to 5.39 per cent copper over an area of approximately 500 metres wide by 400 metres long (Assessment Report 31490).