Exploration

Detour Gold’s strategy is to create additional shareholder value through organic growth. The Company controls a strategic land position of over 1,000 km2 on the northernmost Abitibi Greenstone belts which offer an attractive potential for new discoveries.


Detour Lake Property, Ontario

Zone 58N

Zone 58N Highlights
  • High-grade gold underground target
  • Drilled 130,000 metres to date
  • Mineral resource expected at year-end
  • Completing conceptual mine design and preliminary cost for an advanced exploration program

Detour Gold continues to evaluate a number of targets on its large prospective Detour Lake property (625 km2). Exploration work continues in the Lower Detour area where the Company has encountered high grade gold intersections at Zone 58N. This major east-west structural break is located approximately 6 kilometres south of the Detour Lake mine.

Assay results from the 2016-17 infill drilling programs have demonstrated the continuity of the gold mineralization and further confirmed the underground mining potential of Zone 58N. The Company has completed the summer drilling program with 10,789 metres in 27 holes targeting mainly the eastern end of the deposit between vertical depths of 250 and 450 metres at an approximate spacing of 35 metres.

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. 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 over a strike length of 250 metres. The deposit remains open below 800 metres.

Approximately 4,000 metres of additional drilling at a closer spacing is underway to better define the tonnage and grade estimation of Zone 58N due to the high nuggety and coarse nature of the gold. Evaluation of these results will assist G Mining Services Inc., an independent engineering firm, in the completion of the block model, conceptual design and subsequent mineral resource estimate. The conclusion of this work will lead to the decision to proceed with an advanced underground exploration program.


Burntbush Property, Ontario

Burntbush Property Highlights
  • Located on a major deformation zone, west of Hecla’s Casa Berardi gold mine
  • Geology similar to Lower Detour area on Detour Lake property
  • Completing airborne geophysical survey in fall of 2017
Burntbush Property-Geology Map

The Company controls two groups of contiguous claims totaling 494 km2 comprising the Burntbush property, approximately 70 km 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 has completed an airborne geophysical survey over the entire property.