The Apex prospect area is underlain by calcareous siltstone, calcareous phyllite and shale intercalated with structurally truncated limestone lenses all overlain by meta-andesite. Intrusions surround the Stikine package in the Apex area, and consist of granodioritic rock of the late Early Jurassic Cone Mountain Plutonic Suite; and Paleocene to Eocene granite and alkali feldspar granite of the Sloko-Hider Plutonic Suite.
A northeast trending fault structure was observed and inferred on the north part of Cob grid. North to south trending fault and breccia zones were mapped on the central and north part of Cob grid. At south part of the Cob grid, a buried westerly trending fault is interpreted to cut calcareous siltstone along the existing glacier creek where diorite and monzo diorite stocks intrude in calcareous siltstone. Lenses of skarn were observed along its contact zones. Arsenic, gold, silver and copper mineralization detected in skarn lenses and associated silica alteration zones.
In 2015, IMGM International Mining reported that northeast trending fault structure was observed and inferred on the north part of Cob grid which covers the Apex showing. North to south trending fault and breccia zones were mapped on the central and north part of Cob grid. At south part of the Cob grid, a buried westerly trending fault is interpreted to cut calcareous siltstone along the existing glacier creek where diorite and monzo diorite stocks intrude in calcareous siltstone. Lenses of skarn were observed along its contact zones. Arsenic, gold, silver and copper mineralization detected in skarn lenses and associated silica alteration zones.
Mineralization with associated altered limestone is exposed across the face of a large cliff in an irregular patchwork. The mineralization is not described in detail although Kerr (GSC Summary Report 1928) states that it is of the same character as the Devils Elbow deposit (104G 012) some four kilometres to the north. The Devils Elbow deposit is a skarn with three types of lens mineralization consisting of: 1) pyrrhotite-magnetite, 2) galena-sphalerlite, and 3) chalcopyrite. Anomalous gold, silver, and tungsten values are reported at the Devils Elbow occurrence and narrow widths of scheelite were observed.
In 1988, old workings, in the form of several small trenches were found on the Dev claims that covered much of the area in the vicinity of the old Apex showing. Mineralization in the workings is within skarnified limestone and is banded, with banding being defined alternating layers of galena, pyrite, magnetite and sphalerite within a gangue of actinolite, epidote and quartz. Continuous chip samples were taken across the banding in the skarn yielding a weighted average of 336.00 grams per tonne silver, 2.62 per cent lead and 1.08 per cent zinc over a 5.25 metre true width (Assessment Report 18760). Three hundred metres north of this location another outcrop of skarn assayed 61.71 grams per tonne silver and 0.91 per cent copper (Assessment Report 18760).
The 2015, CobPro01 soil geochemical target of IMGM, located at northern part of Cob zone, covers a 1.5 square kilometre area. This prospective target is composed of cluster of pathfinder element anomalies including gold, silver, copper, lead, zinc, arsenic and antimony etc. The anomalies are reported to overlap well in a few concentrated centers observed along northeast trending faults. One well developed anomaly centers at a known copper-silver skarn zone at the southwest end of the CobPro01 the, the V1 zone.
IMGM described a polymetallic skarn-vein as the V1 zone, extending 120 meters northeast with the north end being 5 metres wide and the south end being 1.8 metres wide. The zone is located at the contact zone of siltstone and limestone. A sample from the south end of the zone assayed 67.5 grams per tonne silver, 1.54 per cent copper, 1.67 per cent lead and 2.71 per cent zinc, and a sample from the north end assayed 85.2 grams per tonne silver, 1.25 per cent copper, 0.59 per cent lead and 0.49 per cent zinc; one sample yielded 0.065 per cent molybdenum (Assessment Report 35895). Epidote, chlorite, garnet and silica alteration were noted as were chalcopyrite, malachite, galena and sphalerite. The V1 zone is close enough to the plotted area of the Apex (100 to 200 metres to the northeast) as to actually be the Apex or part of it.
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, for a total of 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 form linear and circle patterns were thought to be suggestive of structures indicative of porphyry mineralization. Four prospective target areas were defined as CobPro01, CobPro02, CobPro03 and CobPro04.
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 Dev 4NW (104G 332), Dev 7410 (104G 333) and Dev 3 (104G 334) for related geological and work history details.
