The Bill gold occurrence is located in on the cliffs above Highway 24, 7 (air) kilometres northwest of Little Fort.
According to Assessment Report 24896, "numerous quartz veins up to 10 centimetres occur along the cliffs above old Highway 24, on the east side of the fault in altered andesitic rock. The majority of the veins are near vertical and strike parallel to the main fault (320 degrees)." Assays of up to 4520 ppb gold have been obtained from samples containing fine-grained galena (Assessment Report 24896).
Hostrocks in the area are skarn-altered limestones and associated silicified sedimentary rocks of the late Paleozoic Harper Ranch Group (Fieldwork 2000) in contact with diorite, monzonite and silicified greenstone of the Dum Lake Intrusive Complex. The calcareous units can be traced from Nehalliston Creek in the north to Eakin Creek and are sparsely mineralized with chalcopyrite and locally galena (Assessment Report 13519).
The Upper Triassic to Lower Jurassic Dum Lake complex is comprised of ultramafic and mafic plutonic rocks that could be part of an Alaskan-type intrusive body. The mafic portions of the Dum Lake complex are dominated by coarse to medium-grained gabbro and diorite but locally includes clinopyroxenite, monzogabbro, microdiorite and tonalite. The ultramafic portion of the Dum Lake complex includes an assemblage of variably serpentinized, locally talc and carbonate-altered rocks consisting of clinopyroxenite, wehrlite and dunite. The Dum Lake complex is truncated by granodioritic rocks of the Triassic to Jurassic Thuya batholith on its southeast side. On its eastward side, Dum Lake complex diorites and gabbros are in contact with massive andesites of the Upper Triassic Nicola Group and argillites, limestones and cherts of the late Paleozoic Harper Ranch Group (Fieldwork 2000).
In 1996, W.T. Hall, G. Wolanski and D. Duguay prospected and sampled the Bill claim group, collecting 60 rock and 9 soil samples (Assessment Report 24896).