detour-lake-exploration-regional

Exploration

Detour Gold’s strategy is to create additional shareholder value through organic growth. The Company has consolidated the Detour Lake area and now controls approximately 625 km2. The Company also controls the Burntbush Property, totaling 494 km2 strategically located on the Ontario side of the Casa Berardi fault.

Detour Lake Property (625 km2

Lower Detour Area - Zone 58N

Since 2012, the Company conducted exploration programs targeting prospective areas along several important structures associated with the Lower Detour Deformation Zone (“LDDZ”) (area referred to as Lower Detour), a major east-west regional structure extending on the property for over 25 kilometres. The Company has defined three sub-parallel structures (Zones 75, 58 and 58N) associated with the LDDZ within seven kilometres of the Detour Lake processing plant. The recent drilling programs have focused principally on Zone 58N, approximately 6 km south of the Detour Lake processing plant, to determine the continuity and extent of the gold mineralization.

Assay results from the 2016 drilling programs have demonstrated the continuity of the gold mineralization and provided a high level of confidence in the upper 250 m of the deposit. During the 2017 winter drilling program, approximately 19,453 m in 51 holes were completed between vertical depths of 250 m and 450 m at an approximate spacing of 35 m. Assay results from this program further confirmed the underground mining potential of Zone 58N. In late July 2017, the Company started a surface infill drilling program of approximately 14,000 metres to continue the infill drilling between 250 and 450 metres below surface.

G Mining Services Inc., an independent engineering firm, has now completed a preliminary model and conceptual design on Zone 58N for an advanced underground exploration program. Based on the geological interpretation of the deposit as currently drilled, multiple lenses of potential ore were delineated from bedrock surface to a depth of approximately 800 metres. The deposit remains open below 800 metres. Work is underway to evaluate options for mining widths and cut-off grade for different mining scenarios. The Company expects to report a mineral resource estimate by year-end.

Gold mineralization is mainly found within an altered feldspar porphyry intrusive characterized by brittle deformation, containing quartz and/or quartz-tourmaline veins with up to 5% pyrite and multiple occurrences of visible gold.

Table of Significant Assay Results (2013-2017).pdf


Detour Lake Property - Geology Map
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Lower Detour - Zone 58N Drilling
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58N press release image
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Burntbush Property (494 km2

The Company controls two groups of contiguous claims totaling 494 km2 comprising its new Burntbush project in the District of Cochrane in northeastern Ontario, approximately 115 kilometres northeast of the Town of Cochrane and 70 kilometres south of its flagship Detour Lake mine.

The Burntbush East and West properties are strategically located along the Casa Berardi deformation zone in the Abitibi Greenstone Belt, approximately 35 and 75 kilometres respectively, west of the Casa Berardi gold mine operated by Hecla Mining Company, which has produced approximately 1.9 million ounces of gold since it commenced production in 1988.

In general, exploration on the Ontario side of the Casa Berardi fault has been minimal due to limited access, overburden and the lack of outcrop exposures. Historical and more recent exploration activities have focused on the main structural break. The Burntbush grassroot properties cover more than 80 kilometres of primary (EW) and secondary (NE-SW) subsidiary faults. It also encompasses a number of gold anomalies intersected in old diamond drill holes, including an intercept of 6.41 g/t over 2.9 metres drilled by Newmont in 1985, and in till samples from a 2005 regional program by the Ontario Geological Survey. Immediately east of the West claim group, drilling by Lakeshore Gold in the mid-2000s delineated a 500 metres gold mineralized horizon (Porphyry Creek Zone). Within the East claim group, in the portion not controlled by Detour Gold, a small NI 43-101 compliant gold resource (A8 3200 Vein System) was reported in 2013 by Alpha Minerals.

The Company is currently undertaking an airborne geophysical survey over the entire property.


Burntbush Property - Location Map
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Burntbush Property - Geology Map
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