Location: 398294E, 6270204N (Thunder North) - 394459E, 6269823N (K9)

Mineral Deposit Type: Magmatic Ni-Cu Sulphide

Commodity: Nickel, Copper, Cobalt, PGE

Size: 3 x 2 Km

Exploration Completed: Remote Sensing, Mapping, Sampling, VTEM Surveys and Drilling (630m)

Planned Work: Mapping, Sampling, Ground Geophysics and Drilling
The geological setting in the northern Kirkham property reflect deep-seated crustal scale faults immediately to the west of the Eskay Rift. These trans-tensional faults are responsible for broad km-scale valleys that host the Neogene volcanic centers, Texas Creek suite Lehto pluton and parts of Nickel mountain intrusive complex at Thunder North. The exploration target is a small differentiad mafic-ultra-mafic intrusion with disseminated and massive magmatic sulphide mineralization containing elevated concentration of Ni, Cu, Co and precious metals. Thunder North prospect lies on the southern flank of the Nickel Mountain Gabbro complex. Mapping and prospecting confirmed the presence of mafic to ultra-mafic rocks associated with the Nickel Mountain and Texas Creek intrusive complexes extended into Thunder North prospect.
Following the discovery of massive Ni-Cu sulphides at E&L, Metallis Resources carried out multiple surface exploration programs of mapping, sampling, and evaluation of VTEM magnetic and conductive anomalies clustered in the northern part of the property. Petrographic thin section analysis at the University of British Columbia, Mineral Deposit Research Unit (“UBC/MDRU”), confirmed the presence of olivine gabbronorite at Thunder North, which contain up to 8.5 wt.% MgO, comparable to some of the differentiated gabbros in Nickel Mountain.

The exploration work is focused on the search for chaotic textured and brecciated olivine gabbros in the footprints of the coincident VTEM and magnetic anomalies, some of which are related to the magnetite-bearing andesite, olivine basalts and Neogene volcanics in the area. The remote sensing data specifically helped in evaluating the spectral and lineament response of the gabbroic rocks at Thunder North. Following the confirmation of olivine gabbros through petrographic studies, Metallis’ exploration team in 2019 carried out extensive field mapping and geochemical rock / soil sampling to further evaluate the nickel potential at Thunder North.


Exploration work completed at Nickel Mountain illustrates that disseminated and massive Ni-Cu-Co-Ag-Au-PGE sulfide mineralization is associated with taxitic and orbicular-textured olivine gabbros (Garibaldi Resources, NR Feb 19, 2019). The Nickel Mountain gabbros extends into Thunder North; a segment of the Eskay Rift that has seen minimal historic exploration for nickel sulphide mineralization. The trans-tensional structural architecture of the western margin of the Eskay Rift is a key control on the emplacement of small open system intrusions as in Nickel Mountain. The differentiated mafic intrusions with chaotic textures and breccias are recognized as an important feature of nickel sulphide ore deposits.
Ground-based follow-up on nickel sulphide targets at Thunder North was focused on ultramafic intrusions at both the “K9 Creek” target and along the southern flanks of the Texas Creek suite “Lehto Pluton” complex, which contains fragments of differentiated gabbro (Pyroxenite), likely the source of the olivine gabbro boulders with 25-26 wt.% MgO found along Harrymel creek. Outcropping Leucocratic gabbros are mapped at Thunder North “K9 Creek” target located ~1.5km southwest of E&L deposit along the ~12km trend of the Nickel Mountain Gabbro Complex. The presence of Nickel Mountain Gabbros at “K9 Creek” target and its proximity to the E&L deposits suggests the possibility of variable-textured taxitic gabbros with potential of magmatic Nickel-Copper sulphide mineralization in the area.
The Betty Creek black shale units, which identifies the stratigraphic position of Nickel Mountain E&L deposit have been mapped to the south near shear zone and Terwilligen Creek areas for further exploration work. Evaluation of the VTEM magnetic and conductive anomalies outside of the footprint of the magnetite-bearing basalts and Neogene volcanics also reflect the potential of small open systems with magmatic Nickel sulphide mineralization, particularly along the ~12km long Nickel Mountain gabbro trend, where the mafic rocks have a higher MgO content.