The Blue Mountain (Holmes-Larson, Independence and Williams) occurrences are located in the headwaters of Whonnock Creek, at elevations from 290 to 525 metres.

The majority of the region is underlain by granodiorite to diorite intrusions of the Jurassic to Cretaceous Coast Plutonic Complex. Roof pendants of the Paleozoic Twin Island Group and Jurassic Harrison Lake Formation occur throughout the area. Plagioclase porphyry andesite dikes cut the intrusive rocks.

Locally, narrow quartz veins, faults and shear zones, striking north-northeast and dipping vertically or steeply to the east, host pyrite and minor chalcopyrite mineralization.

The Williams adit follows a 1-metre wide chloritic fault with minor quartz vein material for greater than 100 metres to the north-north east. A 1 metre chip sample (4925) of rusty and oxidized fault material, taken a short distance from the adit portal, assayed 0.195 gram per tonne gold (Assessment Report 24372).

The Holmes-Larson shaft, now flooded, follows a 2 metre wide shear zone containing irregular, 0.1 to 0.5 metre wide, bull quartz veins,

The Independence adit was driven in a northwest direction for 8 metres then turns north east for 25 metres and follows two main vein sets containing several 3 to 8 centimetre wide quartz-pyrite veins over a total width of 3.0 to 5.0 metres. The two vein sets trend 120 and 036 degrees with dips of 80 degrees south and 75 degrees east, respectively. A grab sample (4932) of quartz vein material assayed 0.56 gram per tonne gold (Assessment Report 24372).

In 1996, the area was prospected as the Blue Mountain property. This work included the identification and sampling of three historical shafts and adits referred to as the Independence, Williams and Holmes-Larson workings.