Location: 401247 E - 6261529 N

Mineral Deposit Type: Porphyry, Shear Vein

Commodity: Copper-Gold (Moly)

Size: 2km x 2km coincident Magnetic and Resistivity Anomaly, Anomalous Cu. Au, Mo

Exploration Completed:WV3 Remote Sensing, Sampling (soil-rock-trench), VTEM Surveys

Planned Work: Detailed Mapping, Grid sampling and drilling


King East target represents a large (2 x 2km) coincident magnetic and resistivity anomaly overlapped with scattered zones of sericitic alteration within the upper Triassic Stuhini Group rocks. Previous work discovered numerous narrow gold-bearing veins, small intrusive stocks and anomalous Au, Cu and Mo anomalies from sub-crop and trenches in the area. The intrusive rocks include 1-4m wide diorite dikes and amygdaloidal to aphanitic intermediate intrusive stock as exposed to the south of King Creek (Howson, 1990a). In 2018 Metallis geologists mapped NNE-trending diorite porphyry dikes; recognized as the potential source of anomalous Cu and Mo in soils. The rock grab samples collected from porphyritic units and sulphide rich sediments also returned slightly anomalous Cu and Au mineralization.

The calculated vertical gradient (‘CVG”) magnetic image (see below) shows multiple north-south trending magnetic lineaments at King East, which reflect the structurally controlled porphyry intrusions and dikes propagated between the Cole and King East targets. The geology and structural framework, diorite dikes and its geochemical signature in King East is similar to what is seen in the Hawilson Monzonite. Remnants of hydrothermal magnetite identified in the Cole drill holes are also interpreted to be linked to King East magnetic anomaly. The current interpretation of the geology and alteration, geophysical and geochemical patterns identify King East as a deep-seated porphyry copper-gold target, similar to Seabridge’s deep Kerr (Sara Howson, 1991, Rosset, 2010) and Johnny Mountain porphyry targets.
Overlapping Mag and Cu Geochem at King East


Field mapping and petrographic studies (Howson, 1990) indicated extensive exposures of upper Triassic Stuhini volcano-sedimentary rocks overlain by intermediate to mafic volcaniclastics and mafic flows of the Unuk River Formation. The stratigraphy is predominantly covered by thick vegetation, however some of the outcrops along creeks reflects thinly bedded, dark-grey to black argillite, cherty argillite, light to dark greenish-green chert, light-grey siltstones, dark grey-green greywackes and finely laminated andesitic ash and crystal tuffs. These stratigraphic units strike north-south and dipping to the west and remain part of a broad north-plunging anticline with moderately dipping limbs (Britten et al., 1989). The Stuhini Group rocks at King East are cut by 0.5 to 4.0m thick porphyritic diorite dikes attributed to the Texas creek suite intrusions at Kirkham property.


The porphyritic diorite dikes are apparently responsible for the silicification and chlorite alteration in the Stuhini Group rocks. The amygdaloidal to aphanitic intrusions display sericite-carbonate-pyrite and coarse-grained pyrrhotite assemblage. Historic mapping and prospecting reported that the interbedded chert, ash tuff and argillite units at King Creek are characterized by pervasive quartz-carbonate-limonite-sulphide alteration as part of the gossans which extends for 100m to the south of King Creek (Howson, 1990). This alteration assemblage and gossans corresponds to the outer sericitic alteration and oxidation in a porphyry system as observed in the Hawilson Monzonite complex to the west (see Fig. below)
King East Target


Previous work including trenching and geochemical sampling highlighted numerous narrow gold-bearing veins carrying 17.1 g/t Au over 0.6 meters and 2.0 g/t Au over 6 meters. Some of the historic soil samples also returned elevated gold values > 3 g/t Au.

Building on the anomalous Au, Cu and Mo values in trenches, Metallis Resources in 2018 conducted a high-resolution (83.3m line spacing) VTEM survey to detect magnetic and conductive anomalies in King East. Results from the 2018 VTEM survey indicated a number of discrete magnetic and resistivity anomalies related to the intrusive rocks and scattered gossans (see Image). Metallis geologists expanded the understanding of the King East target and collected a number of rock chip samples from porphyritic units as well as sulphide rich sediments. Minimal Cu and Au mineralization were returned from these samples. Mapping in the area highlighted numerous northerly trending dikes dominated by diorite and are interpreted to be the source of anomalous Cu and Mo in soils.

The 2019 field exploration program including large scale mapping, prospecting and selective rock and soil sampling was focused on the entire magnetic anomaly and historic showings. The geology and structural framework, diorite dikes and its geochemical signature at King East appear similar to the Hawilson Monzonite porphyry complex. The gold showings in veins, monzonite dykes and gold-in-soil anomalies have also been documented to the south of King Creek. These features highlight the presence of porphyry style mineralization at King East, to be tested with future exploration and drilling programs.