The BILL (F) occurrence is located on the east side of a north-south–trending ridge, approximately 5 kilometres west of Park Creek and 21 kilometres west-northwest of the junction of the Spatsizi and Stikine rivers, 131 kilometres east of the community of Iskut on Highway 37.
Regionally, the area lies at the eastern edge of the Intermontane Belt near the Kutcho fault and marks the boundary with rocks of the Omineca Belt. The oldest rocks in the area are a sequence of lower greenschist–grade metamorphosed sedimentary and volcanic rocks correlated based on lithological similarities to rocks of the Asitka Group found elsewhere (Geological Survey of Canada Open File 483). Fossil evidence from later regional mapping dates at least part of the sequence as Mississippian (Geological Survey of Canada Paper 80-1B, pages 207-211). A tentative Devonian to Permian age is assigned to these rocks. Five stratigraphic units have been recognized and are, from oldest to youngest: feldspathic chlorite schist; phyllite, sericite and calcareous sericite schist; massive rhyolite, chert and sericite schist; carbonate; and upper feldspathic chlorite schist. The rocks are complexly folded and have undergone at least two phases of deformation. They are predominantly calc-alkaline with minor alkaline members. Two Early Jurassic plutonic bodies intrude the formation: One is quartz monzonite in composition and the other is diorite. The sequence is similar in many respects to rocks of the Kutcho Formation in the southeastern corner of the Cry Lake map area.
Locally, a strongly altered 3-metre wide zone in a chlorite schist hosts quartz-carbonate veins with small pyrite, arsenopyrite and chalcopyrite lenses.
In 2001, a sample (272501) assayed 2.80 grams per tonne gold (Assessment Report 26661).
In 2007, a grab sample (90070) assayed 7.92 grams per tonne gold and 4.3 grams per tonne silver, whereas float samples (90068 and 90073) yielded up to 29.90 grams per tonne gold, 538 grams per tonne silver and 0.999 per cent copper (Assessment Report 29605). A
2020 rock sample (906861), obtained from an outcrop approximately 575 metres southeast of Bill (F), assayed 55.6 grams per tonne gold. The 5 centimetre wide milky quartz vein contained pyrite veinlets with trace chalcopyrite (Assessment Report 39378).
Work History
The area has been explored in conjunction with the T-Bill occurrence (MINFILE 094E 092), located approximately 550 metres to the north.
During 1980 through 1984, Cominco Ltd., later in partnership with Du Pont of Canada Exploration Limited, conducted programs of rock, silt and soil sampling; geological mapping and ground geophysical surveys on the area as the Bill 1-3 and T-Bird 1-8 claims.
During 2001 through 2005, Rimfire Minerals Corporation and Stikine Gold Corporation carried out a program of prospecting; rock, silt and soil sampling; geological mapping and ground geophysical surveys on the area as the BT 1-3 claims. In 2006, Arcus Development Group Inc optioned the Williams property from Rimfire. In 2007, Equity Engineering Ltd was contracted by Rimfire to carry out a program of geological mapping, prospecting and rock, soil and silt sampling on the Williams property.
In 2014, Kiska Metals Corp. completed a program of prospecting, geological mapping and rock and soil sampling on the area. International Samuel Exploration conducted a small soil, rock and silt sampling program over the GIC and Bill areas in 2020, with a rock sample from the Bill area assaying 55.6 grams per tonne gold (Assessment Report 39378). In 2021, Volatus Capital Corp. conducted a 1445 line-kilometre airborne magnetic survey over the Williams property, while in the same year CopAur Minerals Inc. achieved 718 line kilometres of airborne magnetic and electromagnetic (VTEM) surveys, an induced polarization survey, mapping, silt, soil and rock sampling and 3150.6 metres of diamond drilling in 7 holes at the T-Bill prospect (094E 092), 545 metres north of Bill (F).
In 2024, Omega Pacific Resources Inc. optioned the Williams property, conducted a project overview, and commenced a diamond drilling program in the GIC area. The program, totaling 1714 metres in three new holes, plus an extension of CopAur's WM22-02 drill hole at the GIC prospect (Press Releases, Omega Pacific Nov. 12, Dec. 04, 2024).
