Lac Coulombe Copper-Nickel-Gold
Key Highlights
The Lac Coulombe Property consists of 89 mineral claims covering approximately 5,336 hectares, located on NTS sheets 21E13 and 21E14, about 100 kilometers south of Quebec City. This property benefits from excellent infrastructure, good road access, and historical exploration results that make it a promising target for further exploration.
Topography and Climate
The property is characterized by gently rolling hills, with elevations ranging from 350 to 400 meters above the valleys. These valleys are crossed by creeks and rivers that flow into swamps, ponds, and lakes. The temperate climate features warm, humid summers from May to early September, with temperatures averaging between 15°C and 27°C. Power is readily available in the area.
Geological Setting
The Lac Coulombe Property is located within a Cambro-Ordovician ophiolite complex that extends from the Quebec-Vermont border to the Quebec-Maine border. This ophiolite belt includes ultramafic to felsic volcanic rocks, with a notable sequence of serpentinized peridotites and dunite at the base, transitioning upwards through pyroxenite, gabbro, and felsic bodies. These volcanic rocks are overlain by sedimentary formations such as the Magog Group, which includes the Beauceville and St. Daniel formations.
The geology of the property, featuring an ophiolitic sequence with ultramafic and volcanic rocks, supports several potential mineral deposit models, including:
- Volcanogenic Epigenetic Stockwork
- Syntectonic Shear Zone Mineralization
- Volcanogenic Massive Sulphides (VMS)
Historical Exploration and Mineralization
Multiple mineral showings have been identified across the property, highlighting its potential for copper, nickel, gold, and silver. Notable mineralized zones include:
- Duval Zone 1 (Copper): Quartz-chlorite veins with chalcopyrite and pyrrhotite, yielding grab sample assays of up to 6.37% Cu.
- Frasier Zone (Gold-Copper): Mineralization in gabbro and pyroxenite, with drill results including 4.29 g/t Au and 6,140 ppm Cu.
- Laurier Juteau (Nickel): Nickel mineralization along ultramafic contacts, with grab samples assaying up to 0.39% Ni over 4.7 meters.
- Toupin (Copper-Gold-Silver): Stockwork veins rich in chalcopyrite, with drilling results including 6.05% Cu, 0.69 g/t Au, and 11.3 g/t Ag over 1 meter.
- Duck Lake (Polymetallic): Copper and zinc mineralization in volcanic rocks, with drilling results showing up to 20,300 ppm Cu and 13.2 g/t Ag over 1 meter.
Exploration Potential
Based on its favorable geological setting and historical exploration results, the Lac Coulombe Property presents strong potential for the discovery of nickel, copper, gold, silver, and other metals. The property’s proximity to infrastructure and availability of a skilled local workforce further enhance its exploration viability.
Proposed Phase 1 Exploration Program
A Phase 1 work program is recommended, consisting of:
- Prospecting, Mapping, and Sampling: To verify historical mineralization and identify new exploration targets.
- Ground Geophysical Surveys: To support the identification and delineation of subsurface mineralization.
The Lac Coulombe Property is a valuable asset for continued exploration, with significant potential for hosting economically viable mineral deposits.