The Seagull Lake Intrusion (“SLI”) is described as being a 10 km diameter, circular intrusive composed of ultramafic rocks with a high olivine content that has been derived from a deep mantle source. Layering and multiple phases of intrusion have been recognized which creates a favourable setting for Noril'sk Type sulphide accumulation. The SLI is located in the Nipigon Plate, which is interpreted to represent the failed third arm of a Proterozoic-aged, mid-continent rift system, the bulk of which lies beneath Lake Superior to the south. The Nipigon Plate area has been compared to the Noril'sk Region of Siberia, Russia, and is considered to be highly prospective for the discovery of new Cu-Ni-PGE deposits. Known platinum group element-copper-nickel (“PGE-Cu-Ni”) zones in the intrusion support the interpretation that Proterozoic ultramafic intrusions in this area of the Nipigon Plate have undergone magmatic processes that are capable of producing large PGE-Cu-Ni sulphide deposits (see Company news release dated March 12, 2019). Three styles of PGE mineralization have been identified in the SLI: (1) near surface, PGE-rich detrital “black sands”; (2) magnetite associated, PGE-rich layers or “reef-type”; and, (3) sulphide associated, basal Cu-Ni-PGE mineralization, interpreted as “Noril’sk-type”. Although the detrital and reef-type mineralization was the first style known in the SLI, the discovery of Noril’sk-type Cu-Ni-PGE sulphide mineralization became the focus for subsequent exploration programs, which reported from diamond drilling 3.6 g/t Pt+Pd, 0.34% Cu and 0.21% Ni over 2.1 metres and 1.04 g/t Pt+Pd, 0.14% Cu and 0.16% Ni over 16.0 metres (from Pettigrew, 2002). The possibility for the discovery of other styles of sulphide mineralization remains including Contact-type deposits (e.g., Lac Des Iles Mine and River Valley deposits, Ontario) and structurally hosted high-grade concentrations along regional fault systems.
Shebandowan Property Vanguard East - West & Iris Lake Au, Cu, Zn, Co, Ag
Shebandowan Property, Ontario In Ontario, the Shebandowan Property, located 100km west of the city of Thunder Bay, hosts two historic non-43-101 compliant resources known as the East Vanguard and the West Vanguard.
The East Vanguard hosts 100,000 tonnes of 1.8%Cu, 4.5% Cu, 6.8g/t Ag, and 5g/t Au. The West Vanguard hosts 200,000 tonnes of 1.3%Cu, 1.5% Zn, 8.62g/t Ag and 4g/t Au.
East Coldstream Deposit area which hosts 34 million tonnes of 0.79g/t Au, and also on the Moss Lake deposit which hosts 100.2 million tonnes of 1.1g/t Au and has a NI 43-101 PEA dated as recent as 2013 on the property.