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Market Cap £6.24m
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Position in Universe 1887th / 2711

MacDonald Mines Makes Discovery – Drills 5.17 g/t Gold over 22.67 m, including 113 g/t Gold over 0.96 m at Glade Area of its SPJ Project

Thu 13th May, 2021 11:00am
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TORONTO, May 13, 2021 (GLOBE NEWSWIRE) -- MacDonald Mines Exploration Ltd.
(TSX-V: BMK, OTC: MCDMF) (“MacDonald Mines” or the “Company”) reports
on results from its Winter 2021 drilling program at its 100% owned SPJ
Project, 30 km east of Sudbury, Ontario. Of significant note, a high-grade
discovery was made in the Glade area, 800 m south of the historical Scadding
Mine with results highlighted by 5.17 g/t gold over 22.67 m, including 113 g/t
gold over 0.96 m. Ground exploration will begin next week to develop new
targets on the 2.3 km Alkin-Glade trend for the next round of drilling.

Highlights include:
* Glade - High-grade gold mineralization was discovered 800 m south of the
historical Scadding Mine (Figure 1):  * 5.17 g/t gold over 22.67 m, including
113 g/t gold over 0.96 m in hole AG-21-097.
* Visible gold was observed in both holes AG-21-096 and AG-21-097.
* The iron-chlorite alteration that hosts gold at Glade appears similar to
that of the Scadding Deposit and could indicate a large mineralized system.
* Jovan - Gold mineralization with associated silver and nickel mineralization
was intersected (Figure 2):  * 0.88 g/t gold over 6.25 m in hole JV-21-093 -
confirming and extending the Palkovits Gold Structure
* High-grade silver mineralization with 774 g/t Ag over 1.22 m in hole
Mia Boiridy, President and CEO, comments, “The results at Glade are
exciting. Not only did we intersect quartz veins with high-grade gold, but the
presence of iron-chlorite alteration, similar to what is seen at Scadding,
indicates that this area may represent an extension of that mineralized
system. We will immediately follow up on this discovery and look to extend the
high-grade gold mineralization along the 2.3 km trend between the Glade
showings and the historical Alkin mine. Mechanized stripping and trenching
will begin next week to expose mineralization at surface and define our next
round of drilling.”

“We are equally pleased to report that the drill results from Jovan have
confirmed and extended the Palkovits Gold Structure and intersected high-grade
silver. While Glade is showing a potential extension of the high-grade gold
mineralized system of the Scadding area, the Jovan results confirm our theory
that a much larger gold/polymetallic system is at work on our large SPJ

Figure 1. Plan map of Winter 2021 drilling at Glade

Figure 2. Plan map of Winter 2021 drilling at Jovan

Table 1. Reported assays – Winter 2021 drill program

 Hole       From    To      Length*   Gold     Ag      Pd      Ni    Structure            
            (m)             (m)                (g/t)   (g/t)                              
            (m)             (g/t)     (wt. %)  
 JV-21-084  26.19   27.50   1.31      0.85                           Ess Creek Corridor   
            212.38  217.63  5.25                       0.055   0.12  
 JV-21-086  58.29   59.55   1.26      0.51                           Ess Creek Corridor   
 JV-21-087  139.00  143.65  4.65      0.19                           Ess Creek Corridor   
 JV-21-088  295.53  296.75  1.22               774.00                Ess Creek Corridor   
 JV-21-090  84.47   104.95  20.48     0.15                           Palkovits Structure  
 JV-21-093  87.50   93.75   6.25      0.88                           Palkovits Structure  
 JV-21-085  No significant results                                                        
 JV-21-089  No significant results                                                        
 JV-21-091  No significant results                                                        
 JV-21-092  No significant results                                                        
 JV-21-094  No significant results                                                        
 AG-21-096  10.17   19.21   9.04      0.86                           Alkin-Glade Trend    
            13.20   14.20   1.00      4.06                           
 AG-21-097  8.16    16.00   7.84      0.32                           Alkin-Glade Trend    
            25.17   26.17   1.00      2.05                           
            33.85   38.33   4.48      0.26                           
            86.78   109.45  22.67     5.17                           
            100.28  101.24  0.96      113.00                         

*Assay results are presented over core length. As they represent discoveries,
additional drilling is necessary to estimate the true width of the discovered
zones of mineralization.

Table 2. Coordinates of reported holes

 Hole ID    Easting   Northing  Elevation  Azimuth  Dip    Depth (m)  
 JV-21-084  538325.1  5165524   267.6      359.5    -47.5  314        
 JV-21-085  538448.0  5165498   257.4      0.0      -45.0  370        
 JV-21-086  537846.4  5165228   256.2      344.6    -55.8  310        
 JV-21-087  537847.0  5165229   255.8      346.8    -63.2  385        
 JV-21-088  538383.0  5165443   264.7      347.1    -51.9  400        
 JV-21-089  536746.3  5165865   296.6      29.5     -60.1  103        
 JV-21-090  536174.4  5165712   300.1      345.4    -50.0  232        
 JV-21-091  536174.4  5165712   300.1      30.0     -48.0  217        
 JV-21-092  536544.4  5164986   306.6      355.3    -72.7  325        
 JV-21-093  536174.4  5165712   300.1      285.0    -45.0  202        
 JV-21-094  535986.6  5165095   314.6      330.0    -70.0  328        
 AG-21-096  529078.0  5165595   296.2      145.0    -45.0  199        
 AG-21-097  529054.0  5165626   292.5      145.2    -45.0  217        


The Alkin-Glade trend is located at the contact between a Nipissing intrusion
and sedimentary rocks. The structure hosts two significant zones of
mineralization - the historic Alkin Mine and the Glade showings. In the Glade
area, Ontario Geological Survey maps and historical exploration identified a
broad zone of disruption, alteration, deformation and mineralization that
extend over a strike length of 300 m. High-grade gold in quartz veins was
reported historically. Many old trenches, now overgrown with vegetation, are
the only evidence of the 1930s and 1940s exploration work done at Glade with
gold mineralization still exposed at the Glade East and Glade West showings.

The historical Alkin gold mine is located 2.3 km W-NW of the Glade showings.
At the Alkin mine, gold mineralization occurs as a network of quartz veins
hosted in the felsic phase of the Nipissing Diabase intrusion that also hosts
the Glade showings. Reconnaissance work by the Ontario Geological Survey
reported gold assays up to 38.8 g/t gold in grab samples taken from the veins
exposed at the Alkin Mine (OFR 5771). The reader is cautioned that grab
samples are selective by nature and do not represent the actual grade of the
targeted mineralization. In addition, the reader is cautioned that the
qualified person has not done enough work to validate the accuracy of the
historical results.

MacDonald Mines’ drilling in the Glade area was centered on the Glade West
Showing identified in the 1930s and 1940s and prospected by MacDonald Mines in
2019 where grab samples returned up to 18.53 g/t gold (see October 1, 2019
News Release). The reader is cautioned that grab samples are selective by
nature and do not represent the actual grade of the targeted mineralization.

Diamond drilling under the Glade West Showing in holes AG-21-096 and AG-21-097
revealed a large alteration and mineralization system where shear-hosted
quartz veins are surrounded by networks of gold mineralized, multidirectional
and variably spaced quartz tension veins concentrated in the Nipissing
intrusion. Visible gold was observed in many of the quartz veins in both holes
AG-21-096 and AG-21-097. In AG-21-097, one of those veins contained
significant amounts of visible gold (Picture 1).

Picture 1. Visible gold in hole AG-21-097

In some of the quartz veins, visible gold is associated with iron-rich
chlorite alteration emplaced and crosscutting the quartz veins. This
association between gold and iron-rich chlorite observed at the Glade West
Showing is similar to the association between iron-chlorite and gold at the
Scadding Deposit. The potential relationship between the mineralization
observed at Glade and the Scadding Deposit, located 800 m north, could
represent a considerable extension to that mineralized system.

MacDonald completed eleven (11) holes (JV-21-084 to JV-21-094) for a total of
over 3,187 m at Jovan to test the polymetallic potential of the area. The
drilling targets were selected based on favourable geology, proximity to or
spatial association with known mineralization at surface and sizeable
geophysical responses detected by the IP survey. Drilling occurred principally
in the Ess Creek Deformation Zone and the Palkovits Structure.

In the Ess Creek Deformation Zone, holes JV-21-084, JV-21-085 and JV-21-088
targeted a broad zone of low resistivity detected by the IP survey that is
spatially overlapping a positive magnetic anomaly as well as surface sulphide
and iron-oxide mineralization with cobalt, copper and nickel. Drilling
confirmed that the sulphide and iron-oxide mineralization does extend at depth
and that it corresponds with the zone of low resistivity that was detected by
the IP survey.

Hole JV-21-084 shows anomalous nickel with elevated palladium associated with
sulphide mineralization. In addition, drilling identified many discrete shear
and fault zones in the Ess Creek Deformation Zone that are mineralized with
precious metal, including an intersection of high-grade silver mineralization
in a fault seam in JV-21-088.

Holes JV-21-086 and JV-21-087 targeted the lateral extension of the structural
zones intersected in holes JV-21-084 and JV-21-085. Both holes intersected
anomalous gold in mineralized structures of the Ess Creek Corridor associated
with concentrations of arsenopyrite and pyrite in albitized intrusive and
sedimentary rocks.

Upcoming Webinar
MacDonald Mines is providing an opportunity for shareholders and other
interested parties to participate in a webinar on Tuesday, May 18, 2021, at
4:00 pm EDT. Click on the following link to register. After
registering, you will receive a confirmation email containing information
about joining the webinar.

Qualified Person
Jean-François Montreuil, P.Geo., Chief Geologist of MacDonald Mines, is the
qualified person as defined by National Instrument 43-101 Standards of
Disclosure for Mineral Projects, responsible for preparing, supervising, and
approving this news release's scientific and technical content.

On-site Quality Assurance/Quality Control (“QA/QC”) Measures
Drill core samples were transported in security sealed bags for analyses to
Actlabs in Ancaster, Ontario. Individual samples are labelled, placed in
plastic sample bags and sealed. Groups of samples are then placed into durable
rice bags and then shipped. The samples transported to Actlabs were dropped in
rice bags with security seals by Manitoulin Transport. 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 drill core. As part of its QA/QC
program, the Company inserts external gold standards (low to high grade) and
blanks every 20 samples in addition to random standards, blanks, and
duplicates. All samples over 10 g/t gold or the samples with abundant visible
gold are analyzed using a 1-kilogram metallic screen. Check assays are
routinely performed for samples with visible gold to ascertain the gold
content of the mineralization zone.

COVID-19 Precautions
MacDonald Mines has developed and implemented precautions and procedures that
are compliant with Ontario’s health guidelines. Strict protocols are in
place to ensure the safety of all staff and contractors, thereby reducing the
potential for community contact and spreading of the virus.

About MacDonald Mines Exploration Ltd.
MacDonald Mines Exploration Ltd. is a mineral exploration company
headquartered in Toronto, Ontario that trades on the TSX Venture Exchange
under the symbol "BMK".  

The Company is focused on developing its 100%-owned SPJ Project in Northern
Ontario. Following up on its successful 2019/20 exploration and drilling
campaigns, MacDonald Mines is focused on what it theorizes to be a large gold
system at work on the 18,340 ha property with high-grade gold surrounding the
past-producing Scadding Gold Mine and gold/polymetallic mineralization over
several kilometres around it.

To learn more about MacDonald Mines, please visit

For more information, please contact:

Mia Boiridy, President & CEO, (250) 575-3305,

This News Release contains forward-looking statements. In some cases, you can
identify forward-looking statements by terminology such as “may”,
“should”, “expects”, “plans”, “anticipates”, “believes”,
“estimates”, “predicts”, “potential” or “continue” or the
negative of these terms or other comparable terminology. These statements are
only predictions and involve known and unknown risks, uncertainties and other
factors that may cause our or our industry’s actual results, levels of
activity, performance or achievements to be materially different from any
future results, levels of activity, performance or achievements expressed or
implied by these forward-looking statements.

Although the Company believes that the assumptions and factors used in
preparing the forward-looking information in this news release are reasonable,
undue reliance should not be placed on such information, which only applies as
of the date of this news release. The Company disclaims any intention or
obligation to update or revise any forward-looking information, whether as a
result of new information, future events or otherwise, other than as required
by law. 

Figure 1. 
Plan map of Winter 2021 drilling at Glade Figure 2. 
Plan map of Winter 2021 drilling at JovanPicture 1 
Visible gold in hole AG-21-097

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