The Yoggi Bear occurrence is located along the southern flank of the South Willoughby Glacier, approximately 29 kilometres east of the community of Stewart.

The area is underlain by volcanic and sedimentary rocks of the Lower Jurassic Unuk Formation (Hazelton Group), which are unconformably overlain by the Middle Jurassic marine and non-marine volcanics and sediments of the Betty Creek Formation, the volcanic sedimentary Upper Jurassic Salmon River Formation, and the post-accretion fine elastic basinal Nass Formation. Intrusives in the region are dominated by the granodiorite of the Coast Plutonic Complex (to the west). Some of the smaller intrusive plugs in the study area range from quartz monzonite to granite and are likely related outlier processes associated with the Coast Plutonic Complex.

Locally, a zone of strongly sericite-chlorite-carbonate altered andesite, with quartz, barite, minor rhodonite, and minor galena, sphalerite and pyrite occurs.

In 2002, Teuton Resources completed a program of reconnaissance rock geochemical sampling. A chip sample (A02-96) across 1.75 metres of mineralized material returned 100.3 grams per tonne silver, 2850 parts per million lead and 4.0 per cent zinc (Assessment Report 27100).