The Judo occurrence is located on the north fork or Centerville Creek, approximately 4.1 kilometres north-northeast of Highway 37 at McDame Creek and 10 kilometres northeast of the town site of Cassiar.
The area is underlain by limestones and dolomites of the Espee and Stelkuz formations, which are part of the Upper Proterozoic Ingenika Group. Conformably overlying the Stelkuz Formation are argillaceous sediments of the Lower Cambrian Boya Formation (Atan Group). A north-trending, high-angle fault separates the Espee and Stelkuz formations.
The main zone consists of galena, sphalerite, and pyrite, which occurs in calcite veinlets that crosscut argillaceous sheared sediments north of Judo Creek. The mineralized zone has been traced discontinuously for approximately 100 metres along a northwest-southeast strike and is up to 0.30 metre wide.
In 1984, an 0.13-metre channel sample (B-335) of gossanous material from the main vein, exposed on the south side of the creek, assayed 1.26 per cent lead, 3.04 per cent zinc, 252.8 grams per tonne silver and 12.60 grams per tonne gold (2.74 grams per tonne gold on re-assay), whereas a sample (B-336) of the rubble breccia zone underlying the vein assayed 1.29 per cent lead, 1.04 per cent zinc and 61.0 grams per tonne silver (Assessment Report 13688).
In 1985, a rock sample (T-209) from trench 1, located on the north side of the creek, assayed 1.07 per cent lead, 0.89 per cent zinc, 139.4 grams per tonne silver and 1.49 grams per tonne gold (Assessment Report 14847).
In 1986, a sample (KR-704a) from a 10- to 30-centimetre thick band of oxidized material hosting minor veins of massive galena in trench 6, located north of the creek, assayed 1.92 per cent lead, 0.77 per cent zinc and 265.0 grams per tonne silver, whereas three samples (KR-709a, b and c) from trench 5, located south of the creek, yielded an average of 2.93 per cent lead, 1.94 per cent zinc and 96.5 grams per tonne silver over 0.7 metre (Assessment Report 15558).
Work History
The first recorded work on the property was in 1965 when Ventures Mining Ltd. conducted a cursory examination.
The claims were all allowed to lapse, and the ground remained open until Colony Pacific Explorations Ltd. restaked the area in 1984 to 1985. In 1984, the main showing was resampled and geologically mapped. In addition, 14 silt samples were collected over the bulk of the Judo 1 claim block. These produced anomalous values from immediately downstream of the main showing plus an area 1.5 kilometres to the west. Mineralized float was also found in a number of locations, and the style of mineralization was recognized as being similar to the Midway deposit (MINFILE 104O 038). During the 1985 field season, a more extensive program of soil geochemistry, geological mapping, line cutting, VLF and magnetometer was conducted over the property. A total of 274 soil samples, 2 silt samples and 14 rock samples were collected, plus 11.7 kilometres of flagged line was established. In total, five distinct anomalies were outlined for further work. In 1986, Colony Pacific Explorations Ltd. conducted a program of road building (5 kilometres) and trenching on the Judo claims. In addition, four soil samples were collected plus a limited amount of prospecting and rock sampling.
In 1997, International KRL Resources Corp. completed a 315.0 line-kilometre airborne magnetic and electromagnetic survey on the area immediately south as the Cold claims.
In 2008, Pacific Bay Minerals Ltd. completed a 917.0 line-kilometre airborne magnetic and electromagnetic survey on the area as the Haskin-Reed property. The following year, a program of geochemical (rock, silt and soil) sampling and trenching was completed on the property.
In 2018, Jedway Enterprises Ltd. prospected the area as the Judo property.