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MacDonald Mines Receives Assays of the Oxide Sands, Wawa-Holdsworth Gold Project; Up to 6.2 g/t AuEq

28.11.2017  |  GlobeNewswire

TORONTO, Nov. 28, 2017 (GLOBE NEWSWIRE) -- MacDonald Mines Exploration Ltd. (TSX-V:BMK) ("MacDonald Mines", the "Company", or “BMK”) announces that it has received gold and silver assays for most of the remaining trenches across the Oxide Sands zone. Trenches 650, 675, 700, 775S, 1200, 1250, 1250SE, 1400 and 1700 all produced positive gold (Au) and silver (Ag) results.

Plan map of trenching locations with gold AuEq values


Table 1 highlights the recently received results from the on-going sampling. The spatial relationship between these trenches and the Oxide Sands trend is shown in Figure 1.

Trench ID Sample ID From
(cm)
To
(cm)
Sample
length (cm)
Au
(g/t)
Ag
(g/t)
AuEq
(g/t)*
TR1250SE-4 260462 50 95 45 5.92 24.2 6.2
TR675-2 18070 47 103 56 5.94 9.61 6.1
TR675-8 18077 0 45 45 4.81 10.5 5.0
TR775S-9 260121 20 103 83 4.47 11.4 4.6
TR650-5 260313 126 162 36 3.6 43.6 4.2
TR675-1 18065 0 76 76 4.10 4.23 4.2
TR1700-26 260427 30 92 62 3.52 29.1 3.9
TR1250SE-4 260461 0 50 50 3.69 11.6 3.8
TR1700-25 260426 56 95 39 3.31 38.6 3.8
TR775S-9 260122 103 140 37 3.57 8.03 3.7
TR1250SE-6 260465 0 70 70 3.59 5.06 3.7
TR1250SE-6 260466 70 110 40 2.96 13.6 3.1
TR1250SE-3 260458 0 36 36 2.70 28.9 3.1
TR1250-1 260252 40 93 53 2.93 6.02 3.0
TR1250SE-5 260464 67 105 38 2.66 17.4 2.9
TR650-3 260307 187 227 40 2.58 23.2 2.9
TR775S-10 260124 60 100 40 2.57 19 2.8
TR675-0 18063 7 67 60 2.65 6.88 2.7
TR1250SE-3 260459 36 90 54 2.42 11 2.6
TR1200-4 260236 115 130 15 1.75 58.1 2.5
TR1250SE-2 260457 0 42 42 2.43 6.95 2.5
TR1250SE-5 260463 0 67 67 1.92 23 2.2
TR1200-6 260241 116 130 14 1.62 44.4 2.2
TR1200-5 260238 116 130 14 1.65 33.7 2.1
TR675-0 18062 0 7 7 1.96 7.21 2.1
TR675-3 18073 45 130 85 1.83 7.62 1.9
TR1400S-21 260444 50 120 70 1.19 51.4 1.9
TR1700-24 260422 0 93 93 1.54 10.4 1.7
TR675-1 18067 76 136 60 1.61 5.52 1.7
TR675S-6 260221 0 45 45 1.34 20 1.6
TR650-8 260323 155 219 64 1.27 19.2 1.5
TR775S-11 260128 40 110 70 1.29 16 1.5
TR750S-11 260143 70 140 70 1.3 13.4 1.5
TR750S-9 260138 0 70 70 1.32 11.7 1.5
TR675S-5 260223 30 70 40 1.25 16.4 1.5
TR700-15 18128 0 30 30 1.40 4.82 1.5
TR650-6 260316 135 175 40 1.07 24.4 1.4
TR650-4 260310 213 273 60 1.2 13.8 1.4
TR775S-10 260123 0 60 60 1.04 13.5 1.2
TR1700-25 260424 14 56 42 0.97 14.2 1.2
TR1250-2 260253 44 70 26 1.05 5.72 1.1
TR650-9 260327 146 206 60 0.95 13.1 1.1
TR1400S-22 260441 104 155 51 0.34 58 1.1
TR675S-8 260216 38 88 50 0.89 12.5 1.1
TR750S-14 260149 0 70 70 0.90 10.6 1.0
TR775S-8 260117 30 88 58 0.88 10.3 1.0
TR650-7 260319 210 255 45 0.87 10.9 1.0
*AuEq calculated using spot price of 1291.5 US$/oz for gold and 17.13 US$/oz for silver taken at market closure on November 23, 2017. AuEq = (Grade Au) + [(Grade Ag)/(Gold Price/Silver Price)] (ratio rounded to 75).

A map accompanying this announcement is available at http://www.globenewswire.com/NewsRoom/AttachmentNg/f33d87bf-52b9-482c-8bec-825b5cbe0b14

Quentin Yarie, President and Chief Executive Officer of MacDonald Mines stated, "The trenching of the Oxide Sands has resulted in very positive findings. It not only confirmed that they extend on surface over a strike length of 1100m but also, that we’re dealing with higher grades than anticipated. Assay results with up 8.94 g/t gold are very encouraging and we expect the assay results from our sonic drilling campaign to corroborate these findings.”

Next Steps for the Wawa-Holdsworth Project

Oxide Sand resource estimation
The Company is currently awaiting assay results for 401 holes drilled during its 2,000 m sonic drilling program. Once results are made available, the Company will initiate a NI43-101 inferred resource estimation for the Oxide Sands. Assays for sonic drilling are taking longer than expected due to the necessity to dry the unconsolidated materials before mixing. Unlike crushing hard rock samples where the moisture content is minimal, these drill cores are saturated and prepping them is a much longer process.

Lode gold exploration at the Reed-Booth Showing
In addition to the Oxide Sands, MacDonald Mines continues to investigate the lode gold potential on the property. The Reed Booth Showing is a target for high-grade gold mineralization at the Wawa-Holdsworth Project and the Company is awaiting the results of its channel sampling program announced on Nov. 9, 2017.

Regionally, structures parallel to the one hosting the Reed-Booth Showing, host some of the historic high-grade mines of the Michipicoten Greenstone Belt. This includes the Edward Mine (144,000 ounces of gold at 11 g/t) located 28 km NE, and the Minto Mine South Zone actively explored by Red Pine Exploration (historic Minto Mine produced 22,000 ounces of gold at 12.56 g/t gold) located 18 km SSW. The reader is cautioned that the gold mineralization present at the Edward Mine and in the Minto Mine South Zone is not necessarily indicative of mineralization on the Company’s Wawa-Holdsworth property.

Overview of the Wawa-Holdsworth Project

  • Neighbouring Alamos' Island Gold Mine, Argonaut's Magino Gold Project and Goldcorp’s Borden project
  • 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

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

  • Greenstone-hosted quartz-carbonate vein deposit (Soocana Vein System and Reed-Booth Showing);
  • 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 is focusing its near-term exploration program on the Oxide Sands. Assays results received so far indicate that the precious metals-rich sand formation occurs over a 1.1 km strike length, but Oxide Sands were also observed in the trenching and drilling west of line 1700. Pending assay results, the favourable soil formation containing the Oxide Sands may have an overall strike length of approximately 1.7 km. This will corroborate MacDonald’s interpretation of the geophysical anomalies obtained by the MAX-MIN survey conducted earlier this year (see July 6, 2017 News Release).

Positive preliminary metallurgical results (see July 11, 2017);

  • The concentration ratio of gold in rougher flotation averaged 6.0:1
  • The concentration ratio of silver in rougher flotation averaged 5.2:1
  • Reduction of feed volume in rougher flotation by approximately 85-90%
  • The Oxide Sands can be processed by a simple crushing/flotation process
  • No caustic treatments are necessary
  • The processing will require low power requirements
  • The waste material is inert (>70 percent silica/quartz)

The soft and relatively unconsolidated Oxide Sands material can be extracted like an aggregate. The Company’s trenching and sonic drilling programs completed earlier this fall were designed to better define the Oxide Sands in preparation for their potential extraction.

On-site Quality Assurance/Quality Control (“QA/QC”) Measures
Sand samples were transported in security-sealed bags for analyses to Activation Laboratories Ltd. in Ancaster, Ontario. Individual samples are labeled, placed in plastic sample bags and sealed. Groups of samples are then placed into durable rice bags and then shipped. The remaining coarse reject portions of the samples remain in storage if further work or verification is needed.

MacDonald Mines has implemented a quality-control program to comply with best practices in the sampling and analysis of both the Oxide Sands and drill core. As part of its QA/QC program, MacDonald Mines inserts external gold, silver, platinum and palladium standards (low to high grade) and blanks every 20 samples in addition to random standards, blanks, and duplicates.

Qualified Person
Quentin Yarie, P Geo. is the qualified person responsible for preparing, supervising and approving the scientific and technical content of this news release.

About MacDonald Mines Exploration Ltd.

MacDonald Mines Exploration Ltd. is a mineral exploration company headquartered in Toronto, Ontario focused on gold exploration in Canada. The Company has built a portfolio of safe-jurisdiction, infrastructure-rich projects that demonstrate the greatest market potential for return. The Company is aggressively advancing its highly prospective Wawa-Holdsworth Gold Project.

The Company's common shares trade on the TSX Venture Exchange under the symbol "BMK".

To learn more about MacDonald Mines, please visit www.macdonaldmines.com

For more information, please contact:

Quentin Yarie, President & CEO, (416) 364-4986, qyarie@macdonaldmines.com

Or Mia Boiridy, Investor Relations, (416) 364-4986, mboiridy@macdonaldmines.com

Cautionary Statement:

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

No stock exchange, securities commission or other regulatory authority has approved or disapproved the information contained herein. The foregoing information may contain forward-looking statements relating to the future performance of the Company. Forward-looking statements, specifically those concerning future performance, are subject to certain risks and uncertainties, and actual results may differ materially from the Company’s plans and expectations. These plans, expectations, risks and uncertainties are detailed herein and from time to time in the filings made by the Company with the TSX Venture Exchange and securities regulators. MacDonald Mines does not assume any obligation to update or revise its forward-looking statements, whether as a result of new information, future events or otherwise.


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