The Dev 3 area is underlain by Pennsylvanian sedimentary rock of the Stikine assemblage and volcanic rock of the Upper Triassic Stuhini Group. Paleocene to Eocene granite of the Sloko-Hyder Plutonic Suite is in contact a few kilometres to the immediate west and granodiorite of the Early Jurassic Cone Mountain Plutonic Suite is in contact to the immediate south.
The Dev 3 showing occurs in an area of sedimentary rocks. A sulphide and quartz-rich vein contains galena, pyrite, chalcopyrite, magnetite and sphalerite. A sample assayed 111.42 grams per tonne silver, 2.10 per cent lead, 4.64 per cent zinc and 0.034 per cent copper (Sample 7407, Assessment Report 18760).
IMGM defined four prospective target areas on the Cob Grid based on soil geochemistry and were labeled as CobPro01, CobPro02, CobPro03 and CobPro04. The CobPro04 soil geochemical target is located on the south part of the Cob grid, covering a 1.2 square kilometre area, including the Dev 4 and new skarn zones. Soil anomalies composed of strong arsenic, lead, copper, gold, silver and molybdenum etc. characterize the CobPro04 target.
IMGM reported the discovery of a copper-silver skarn zone (the V-3 zone) located within in their CobPro04 soil geochemical target anomaly near southwest corner of the Cob soil grid. The V-3 skarn zone occurs in a calcareous siltstone along the northern edge of a monzodiorite pluton.
At the V-3 skarn zone a grab sample graded 741 grams per tonne silver (Assessment Report 35895). Continuous chip samples were collected in a hand trenched area over3.5 metres and average 108.1 gram per tonne silver, 1.32 per cent copper and 0.36 per cent zinc (Samples S228389 to S228396, Assessment Report 39895). Host rocks from the sample descriptions include meta-siltstone, siltstone, argillite, gouge and silicious vein. Ateration and mineralization include silica, grey to green clay, copper oxides, trace chalcopyrite and pyrite. The UTM location of this chip sample is 340375E, 6378084N. Strong arsenic and bismuth anomalies found in these continuous rock samples are thought to indicate potential for porphyry-related hydrothermal mineralization.
Two other skarn zone occur 200 metres south and 250 metres southeast of the V-3 skarn zone. The western skarn zone is characterized by coincident soil geochemical anomalies of coincident gold, copper, arsenic, antimony and silver. A third skarn zone, less than 200 metres west-northwest of the V-3 skarn, occurs at the northern contact of a small diorite stock with calcareous siltstone. Rock samples yielded 0.163 gram per tonne gold, 1.3 gram per tonne silver, >1 per cent arsenic and 0.05 per cent antimony (Assessment Report 35895).
WORK HISTORY.
In 2013, IMGM International Mining Inc. staked the Phacops claims, totalling 163.48 square kilometres, located about 10 kilometres south of Telegraph Creek. In 2014, a 45 day field season resulted in the collection 103 silt samples and 110 rock samples mainly at the northern part of Phacops Property and included a cursory mapping of all 10 Phacops claims. Three prospective areas were defined,: the Devils Elbow (104G 012), the Apex area (Cob) 104G 013), and the Phacops Mountain and Butterfly Mountain areas, on the southern part of the Phacops property.
In 2015, IMGM International Mining Inc. collected 591 soils over much of the Cob grid (Phacops property) which is 850 metres east-west by 4.3 kilometres north-south, totalling 3.66 square kilometres in area. They also collected 102 rock samples and 18 thin section samples. Mapping was completed on a 1:10,000 scale
In 2016, IMGM International Mining Inc. expanded the Cob grid/area 1 kilometer east along its entire north-south length. They collected 444 soils over an expanded Cob grid/area (Phacops property). They also collected 102 rock samples and 18 thin section samples. Mapping was completed on a 1:10,000 scale. Focus was on the V-3 zone (Dev 3 (104G 334) which yielded a number of mineralized samples in 2016 with high silver, copper, lead and zinc assays. In 2016, the 2015 Cob soil grid was expanded to the east at the most norther part of the grid. A number of exploration soil lines were also completed throughout the Cob area.
See Apex (104G 013), Dev 4NW (104G 332) and Dev 7410 (104G 333) for related geological and work history details.