MacDonald Mines Prepares for Airborne Geophysical Survey at its Wawa-Holdsworth Project

TORONTO, ONTARIO--(Marketwired - May 8, 2017) - MacDonald Mines Exploration Ltd. (TSX VENTURE:BMK) ("MacDonald Mines", or the "Company") announces that it has contracted Tundra Airborne Surveys Ltd. ("Tundra") to conduct an airborne geophysical survey of its Wawa-Holdsworth Project, located 25 km northeast of Wawa, Ontario.

Quentin Yarie, MacDonald's President and CEO commented: "The airborne geophysical survey will allow us to quickly evaluate the extent of the Oxide Sands so we can focus the upcoming field season on exposing and mapping as much of the Oxide Sands as possible and assess their economic viability. The survey will also provide structural information on the gold-bearing quartz-carbonate veins that are hosted within the greenstones."

The survey is expected to start in mid-May with the final maps and report submitted to MacDonald Mines 3 weeks after survey completion.

Wawa-Holdsworth Project Highlights

  • Approximately 285 hectares, 20 kilometres northeast of the town of Wawa

  • 18 fee simple absolute patented claims, includes surface and mining rights

  • Neighbouring Argonaut's Magino Gold Project2 & Richmont's Island Gold Mine3

  • Numerous gold showings with diversified mineralization styles occurring in a 500 metres-wide deformation corridor

  • Year-long road access and easy access to rail, road, electrical power, labour force and suppliers

Overview of the Wawa-Holdsworth Project

Historic work by previous operators defined three gold targets on the Wawa-Holdsworth Project:

  • Greenstone-hosted quartz-carbonate vein deposit (Soocana Vein System);

  • BIF-hosted gold deposits (gold-bearing pyrite zones in an Algoma-type iron formation);

  • Gold-bearing Oxide Sands developed from the weathering of the auriferous Pyrite Zones.

MacDonald Mines has identified the Oxide Sands as a short-term target for gold production. The Oxide Sands are interpreted to be derived from the weathering of an auriferous and pyritized Algoma-type iron formation that, so far, has been traced on the property over a 2 km-long strike length. The mineralized sands appear to reach a depth of at least 8 metres.

In 2002, a detailed and systematic sampling of the Oxide Sands was conducted over a strike length of 332.5 metres. A composite of 23 panels over the 332.5 metres returned an average gold grade of 3.45 g/t and an average silver grade of 29.99 g/t4. Preliminary metallurgical testing conducted by previous operators on composite samples recovered, without crushing, between 69% and 98.7 % gold.

Earlier this year, MacDonald Mines launched a trenching program to map and confirm the Oxide Sands' strike length and thickness. The Company also initiated a bulk sampling program and commenced metallurgical testing of the Oxide Sands to achieve the highest possible gold and silver recovery.