The North Park (North GIC) occurrence is located at an elevation of approximately 1700 metres on the lower northern slope of a hill, approximately 4.7 kilometres west of Park Creek.
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. The sequence is similar in many respects to rocks of the Kutcho Formation in the southeastern corner of the Cry Lake map area. To the south of the Stikine River, Lower Jurassic Toodoggone Formation (Hazelton Group) volcanic rocks and Upper Cretaceous sedimentary rocks of the Sustut Group dominate. North and east of the Stikine River valley, two Early Jurassic plutonic bodies of the Black Lake Suite intrude these rocks. One is quartz monzonite in composition and the other is diorite. Small zones and pendants of Upper Triassic Takla (Stuhini) Group are found to the east and north of the Toodoggone Formation rocks. The west-northwest–trending Grass fault is located immediately to the south and separates Asitka Group schists to the south from Upper Triassic Takla (Stuhini) Group volcanic rocks to the north.
Locally, a silicified and brecciated limestone and volcanic associated with an east-west–trending fault hosts quartz-calcite veins, up to 10 centimetres wide, with chalcopyrite, malachite and trace galena mineralization. The breccia zones are reported to be up to 1 metre wide and have been locally chloritized and serpentinized.
In 1995, two samples (DB95-1 and -6) of the limestone assayed 2.64 and 2.02 per cent copper with 4.4 and 4.7 grams per tonne silver, respectively, whereas two samples (DB95-7 and -8) of the volcanic assayed 0.879 and 0.964 per cent copper, respectively (Assessment Report 24366).
In 2007, a chip sample (90173) of subcrop over 1 by 10 metres yielded 0.08 gram per tonne gold, 11.6 grams per tonne silver and 2.74 per cent copper, whereas a float sample (90175) yielded 1.29 grams per tonne gold (Assessment Report 29605). Also at this time, a select sample (90025) taken from the same serpentinized fault zone a few hundred metres east yielded 0.188 per cent copper (Assessment Report 29605).
The area has been historically explored in conjunction with the nearby Park (MINFILE 094E 028) occurrence. The earliest record of work in the area dates to 1976, when Cominco Ltd. undertook stream sediment sampling as part of a base-metals exploration program.
In 1980, Du Pont of Canada Exploration Limited staked the Park 1-3 claims and conducted a program of prospecting, rock and silt sampling and geological mapping. Several gossans were recognized, mainly associated with the intrusive contact between granodiorite and ‘chert’. The following year, Du Pont expanded their Park property, filled in gaps in their silt coverage, and took reconnaissance soil samples over the entire property. In 1982, Du Pont conducted geological mapping and a program of rock, silt and soil sampling. In 1983, Du Pont extended the magnetics/VLF survey. With this program, Du Pont’s option was vested and they formed a 50:50 joint venture on the Bill property with Cominco.
In 1987, Pacific Comox Resources Ltd. and Skylark Resources Ltd. completed a program of rock and soil sampling and a 2.1 line-kilometre ground electromagnetic (VLF) survey on the area as the Chuc 1-4 claims.
In 1995, AGC Americas Gold Corp. conducted a program of soil sampling over a 900- by 1000-metre grid and minor rock sampling on the area as the Arc 1-4 claims. This survey showed the gold-copper soil geochemical anomaly to be much larger than previously known, covering an area of 500 by 900 metres and open to the east and west. This enlarged geochemical anomaly and accompanying mineralization and geophysical anomalies is referred to in this report as the ‘GIC prospect’. In 1997, AGC Americas and Antares Mining and Exploration Corporation participated in a joint Geological Survey of Canada–industry airborne magnetic survey over the entire Toodoggone area, including the GIC prospect.
In 2001, Rimfire Minerals Corporation acquired the Bill property and carried out a program prospecting; rock, silt and soil sampling; core re-sampling and geological mapping on the area as the BT 1-3 claims. In 2002, Stikine Gold Corporation optioned the Williams property from Rimfire and carried out limited prospecting through 2003. In 2005, Rimfire carried out geochemical sampling and geological mapping on the GIC area and two outlying geochemical silt anomalies, followed by 17 kilometres of pole-dipole IP surveying on the GIC area. 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.
