The Dev 7410 area is underlain by Pennsylvanian sedimentary rock of the Stikine assemblage. Mapping of the area in 2015 described rocks as calcareous siltstone, calcareous phyllite and shale intercalated with structurally truncated limestone lenses all overlain by meta-andesite. Paleocene to Eocene granite of the Sloko-Hyder Plutonic Suite is in contact a few kilometres to the west and granodiorite of the Early Jurassic Cone Mountain Plutonic Suite is in contact to the immediate south.
A quartz-rich pod with limonite, azurite, malachite stain contains pyrite and chalcopyrite. A sample taken in 1988 assayed 84.4 grams per tonne silver, 0.39 per cent copper, 0.025 per cent lead and 0.24 per cent zinc (Sample 7410, Assessment Report 18760). The host rock was not reported but mapping in 2015 indicates that the sample area is consists of calcareous siltstone that is in contact with deformed limestone less than 100 metres to the northeast.
WORK HISTORY.
In 1988 prospecting of the Dev 1-4 claims was carried out by Continental Gold. Seventy-eight rock samples were collected for analysis.
In 1990, operator Northair Group carried program of stream sediment sampling, prospecting, and geological mapping on the Dev 1-4 mineral claims. During this year, 13 heavy mineral, 108 rock, 21 soil and 265 soil samples were collected.
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. The soil program defined clusters of pathfinder element anomalies, centered along fault and breccia zones, forming linear and circle patterns interpreted by IMGM as being suggestive of structures related to porphyry mineralization. Four prospective target areas were defined based on the soil sample results as CobPro01, CobPro02, CobPro03 and CobPro04. Soil sampling was not completed in the immediate DEV 7410 location and it may be that the terrain was too steep. However, sampling was completed from 200 to 300 metres north, south and east of the showing location. The Dev 7410 is located on the boundary of CobPro03 and CobPro04 soil geochemical target followup areas (pages 38,39, Assessment Report 35895).
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) for a common work history.
