Mandalay Resources Corporation Announces Recent Drilling Results For Aurora (Björkdal), Highlighting High-Grade Extensions to Both the East and at Depth


TORONTO, Nov. 24, 2020 (GLOBE NEWSWIRE) -- Mandalay Resources Corporation ("Mandalay" or the "Company") (TSX: MND, OTCQB: MNDJF) is pleased to provide an update on encouraging results from the Aurora extension and delineation drill programs at its Björkdal mine. These results highlight the open nature of the plunge extensions and an emerging new high-grade domain.

Aurora Drilling Highlights

Extensional drilling to the east and down plunge:

  • 4.8 g/t goldover a true width of2.47m in MU20-007; and
  • 2.7g/t goldover a true width of2.82m in MU20-016

Definition drilling to the east:

  • 8.1g/t goldover a true width of 2.99m in DOD2020-063; and
  • 3.0 g/t gold over a true width of 3.45m in DOD2020-073

Surrounding veining highlights:

  • 14.5 g/t gold over a true width of 2.92m in DOD2020-060; and
  • 38.7 g/t gold over a true width of 0.59m in DOD2020-074; and
  • 55.6 g/t gold over a true width of 0.28m in MU20-018

Note: A full listing of significant drilling composites can be found in Tables 1 and 2 at the bottom of this document.

Dominic Duffy, President and Chief Executive Officer of Mandalay, commented, “We are pleased to report continued encouraging results from the Aurora extension program. These results come at a time when ore production from Aurora is ramping up and becoming the most significant ore source for Björkdal.”

Mr. Duffy continued, “With the exceptional grades seen at Aurora, its extension - both to the east and west - represents an important incremental step for Björkdal providing the foundation to bolster overall feed grade and extend mine life. We are also encouraged by some very high-grade intercepts of veins in close proximity to Aurora which will also be a focus of additional drilling going forward.”

Mr. Duffy continued, “With the current exploration focus turned to strategic development of other targets within Björkdal, we look forward to continuing the Aurora expansion program in early 2021.”

Mr. Duffy concluded, “Alongside this exploration release, a video has been prepared by Mr. Chris Davis, Vice President of Operational Geology and Exploration to further illustrate the detail in this press release, I would like to invite everyone to view the posted video here.”

Aurora Extensional Drilling

The Aurora Extensional Drilling has continued since Mandalay’s last Aurora update in June 2020. To the east MU20-016 returned an intercept of 2.82 m @ 2.7 g/t Au, indicating the plunge extent of Aurora is still open at depth. This was supported by MU20-013 with a reasonably well mineralized array of veining over 3.02 m at 1.6 g/t Au, typical of Aurora, intercepted approximately 60 m above. Higher in the system there has been a reinterpretation of Aurora veining due to new information mining and other drilling results. As a consequence MU20-007 was reinterpreted to include a high-grade composite of 2.47 m at 4.8 g/t Au that, combined with another previously reported intercept (MU20-018 at 7.21 m at 2.5 g/t Au) to the north, highlights a new enriched domain open to the east (see Figure 2).

Further drilling to the east within holes MU20-030 and MU20-032 did not intercept significant mineralization along the interpreted Aurora continuation however in both cases the footwall veining was enriched with 0.25 m at 23.5 g/t Au in MU20-030 and 0.96 m at 12.4 g/t in MU20-032 (see Figure 1). This could indicate a jump across structures of the gold endowment or an as yet unrecognised offset to the main Aurora structure. These results represent the furthest intercepts yet drilled to the east. Continuation of the extension campaign is expected in early 2021.

Surrounding Veining

As well as delineating and extending Aurora the drilling is providing grade information on the stacked set of veins that exist in both the footwall and hanging wall. As seen in MU20-30 and MU20-32, these veins are sometimes higher grade than Aurora and are an important addition to the production potential of the Björkdal mine. In the last Resource update for Björkdal, Aurora made up approximately 45% of metal in resource from veining above the marble contact with the remainder in the surrounding veining. Results from the surrounding veining within recent drilling can be found in Table 2 and illustrated within Figure 1.

Western Definition Drilling

Due to the complicated nature of the veining and gold enrichment within and around Aurora, it is necessary to undertake targeted definition drilling to optimise ore extraction. From this drilling Mandalay has discovered that the Aurora system is also open to the west with encouraging intercepts following along the Frea Fault interaction such as 3.17 m at 3.0 g/t Au in DOD2020-075 and 4.66 m at 2.1 g/t Au in DOD2020-072. In this area approximately 15 additional continuous veins exist alongside Aurora with highlights of 0.59 m at 38.7 g/t Au in DOD2020-074 and 0.37 m at 31.7 g/t in DOD2020-075. As with the extension to the east, a drilling program will focus on extension along this trend in early 2021.

Figure 1. North-South Cross Section at illustrating the location and orientation of the new intercepts surrounding Aurora between 1550 E and 1650 E is available at Veining and interpreted lithology is displayed at 1600 E. The DOD series of holes are drilled further to the west and are not shown on this section.

Figure 2. Longitudinal section of Aurora illustrating the location of recent extension and definition drilling results is available at

Drilling and Assaying

At Björkdal, all diamond drill core was logged and sampled by Björkdal geologists. Exploration drill hole samples (prefix MU) were sent to CRS Laboratories Oy (“CRS”) in Kempele, Finland for sample preparation and assaying. Development optimization drill hole samples (prefix DOD) were prepared and assayed at the onsite laboratory ran by Minlab AB, a subsidiary of CRS (see Technical Report dated March 30, 2020 entitled “Technical Report on the Björkdal Gold Mine, Sweden”, available on SEDAR (, which contains a complete description of drilling, sampling, and assaying procedures).

Assaying was conducted utilizing the Pal1000 cyanide leaching processes. Mandalay’s rigorous QA/QC program included the use of standard reference samples, blanks, duplicates, repeats, and internal laboratory quality assurance procedures.

Qualified Person:

Chris Davis, Vice President of Operational Geology and Exploration at Mandalay Resources, is a Charted Professional of the Australian Institute of Mining and Metallurgy (MAusIMM CP(Geo)), and a Qualified Person as defined by NI 43-101. He has reviewed and approved the technical and scientific information provided in this release.

For Further Information

Dominic Duffy
President and Chief Executive Officer

Edison Nguyen
Manager, Analytics and Investor Relations


About Mandalay Resources Corporation

Mandalay Resources is a Canadian-based natural resource company with producing assets in Australia and Sweden, and care and maintenance and development projects in Chile. The Company is focused on growing production at its gold and antimony operation in Australia, and gold production from its operation in Sweden to generate near term cash flow.

Forward-Looking Statements:

This news release contains "forward-looking statements" within the meaning of applicable securitieslaws,includingstatementsregardingtheexplorationanddevelopmentpotentialof theAuroraZone(Björkdal).Readersarecautionednotto place undue reliance on forward-looking statements. Actual results and developments may differ materially from those contemplated by these statements depending on, among other things,changesincommoditypricesandgeneralmarketandeconomicconditions.Thefactors identifiedabovearenotintendedtorepresentacompletelistofthefactorsthatcouldaffect Mandalay.Adescriptionofadditionalrisksthatcouldresultinactualresultsanddevelopments differingfromthosecontemplatedbyforward-lookingstatementsinthisnewsreleasecanbe foundundertheheading“RiskFactors”inMandalay’sannualinformationformdatedMarch 30, 2020, a copy of which is available under Mandalay’s profile at In addition, there can be no assurance that any inferred resources that are discovered as a result of additionaldrillingwilleverbeupgradedtoprovenorprobablereserves.AlthoughMandalayhas attempted to identify important factors that could cause actual actions, events or results to differmateriallyfromthosedescribedinforward-lookingstatements,theremaybeotherfactors thatcauseactions,eventsorresultsnottobeasanticipated,estimatedorintended.Therecan be no assurance that forward-looking statements will prove to be accurate, as actual results andfutureeventscoulddiffermateriallyfromthoseanticipatedinsuchstatements.Accordingly, readersshouldnotplaceunduerelianceonforward-lookingstatements.

Table 1. New Drilling Composites on Aurora

Drill Hole IDFrom (m)To (m)Drill Width (m)True Width (m)Au Grade (g/t)Au (g/t) over min. 3m mining width Target
DOD2020-0587780.653.652.810.20.1Western Definition
DOD2020-05987.993.525.623.780.40.4Western Definition
DOD2020-06079.65855.354.250.80.8Western Definition
DOD2020-06166.670.23.603.330.90.9Western Definition
DOD2020-06394.2598.44.152.998.18.1Western Definition
DOD2020-072148.5153.24.704.662.12.1Western Definition
DOD2020-073142.25145.73.453.453.03.0Western Definition
DOD2020-074145.7149.53.803.770.20.2Western Definition
DOD2020-075139.05142.253.803.173.03.0Western Definition
DOD2020-076145.45148.33.802.670.20.2Western Definition
DOD2020-097121126.65.553.500.70.7Western Definition
DOD2020-099107.2113.86.554.632.02.0Western Definition
MU20-007323.45326.22.752.474.83.9Eastern Extension
MU20-013216.1219.553.453.021.61.6Eastern Extension
MU20-016271.6276.65.002.822.72.5Eastern Extension
MU20-017188.3197.759.457.300.60.6Eastern Extension
MU20-030132135.43.402.360.60.5Eastern Extension
MU20-031161.95163.851.901.170.40.1Eastern Extension
MU20-032208.25211.152.901.891.61.0Eastern Extension


  1. Where True widths are greater than 3 m, grades are not diluted and are presented as the grade over the composite true width.

Table 2. New Drilling Composites Surrounding Aurora

Drill Hole IDFrom (m)To (m)Drilled Width (m)True Width (m)Au Grade (g/t)Au (g/t) over min. 3m mining width Description
DOD2020-05871.0072.801.801.602.91.6Foot Wall Veining
DOD2020-06073.6077.804.202.9214.514.1Foot Wall Veining
DOD2020-060115.00115.350.350.259.50.8Hanging Wall Veining
DOD2020-06152.5560.107.556.512.62.6Foot Wall Veining
DOD2020-06197.3097.700.400.318.90.9Hanging Wall Veining
DOD2020-063133.80134.100.300.1957.43.6Hanging Wall Veining
DOD2020-07283.8084.750.950.929.73.0Foot Wall Veining
DOD2020-072116.10116.500.400.315.90.6Foot Wall Veining
DOD2020-072157.75158.751.000.784.81.3Hanging Wall Veining
DOD2020-072187.55188.100.550.507.61.3Hanging Wall Veining
DOD2020-072191.50192.000.500.493.80.6Hanging Wall Veining
DOD2020-07348.0548.650.600.595.81.1Foot Wall Veining
DOD2020-07364.5064.850.350.316.30.6Foot Wall Veining
DOD2020-073153.15153.600.450.443.80.6Hanging Wall Veining
DOD2020-073178.05179.651.601.594.92.6Hanging Wall Veining
DOD2020-073185.70186.000.300.2124.31.7Hanging Wall Veining
DOD2020-07432.7033.300.600.5938.77.6Foot Wall Veining
DOD2020-074131.95132.350.400.3916.02.1Foot Wall Veining
DOD2020-074153.70156.102.402.152.01.4Hanging Wall Veining
DOD2020-074165.90167.751.851.803.52.1Hanging Wall Veining
DOD2020-074185.60185.950.350.346.10.7Hanging Wall Veining
DOD2020-07531.6032.050.450.425.60.8Foot Wall Veining
DOD2020-07552.7553.100.350.347.70.9Foot Wall Veining
DOD2020-07577.0077.350.350.335.10.6Foot Wall Veining
DOD2020-075108.75109.100.350.319.31.0Foot Wall Veining
DOD2020-075123.20124.601.401.293.21.4Foot Wall Veining
DOD2020-075170.15170.650.500.3410.31.2Hanging Wall Veining
DOD2020-075180.80181.200.400.3731.73.9Hanging Wall Veining
DOD2020-075190.25190.600.350.3113.31.4Hanging Wall Veining
DOD2020-07629.8830.250.370.276.10.5Foot Wall Veining
DOD2020-07651.4052.831.431.361.80.8Foot Wall Veining
DOD2020-076103.00103.350.350.297.40.7Foot Wall Veining
DOD2020-076117.30117.650.350.2712.41.1Foot Wall Veining
DOD2020-076126.15126.500.350.326.50.7Foot Wall Veining
DOD2020-076157.20157.700.500.315.60.6Hanging Wall Veining
DOD2020-076163.00164.451.451.383.31.5Hanging Wall Veining
DOD2020-076183.35183.700.350.3115.01.6Hanging Wall Veining
DOD2020-076196.30199.303.002.692.11.9Hanging Wall Veining
DOD2020-076201.65202.000.350.315.10.5Hanging Wall Veining
DOD2020-097111.25112.251.000.783.50.9Foot Wall Veining
DOD2020-097166.15166.800.650.377.91.0Hanging Wall Veining
DOD2020-099112.90113.750.850.704.00.9Hanging Wall Veining
DOD2020-099139.55139.950.400.2911.21.1Hanging Wall Veining
MU20-007229.30230.000.700.612.70.6Foot Wall Veining
MU20-008A320.05321.951.901.901.40.9Foot Wall Veining
MU20-009A327.05329.001.951.0714.55.2Foot Wall Veining
MU20-009A338.40338.850.450.275.90.5Foot Wall Veining
MU20-011177.60178.500.900.782.50.6Foot Wall Veining
MU20-011271.60273.001.400.307.20.7Foot Wall Veining
MU20-011278.75279.250.500.2332.52.5Foot Wall Veining
MU20-011337.45338.651.200.2913.91.3Hanging Wall Veining
MU20-011362.20362.750.550.266.20.5Hanging Wall Veining
MU20-011371.60372.000.400.315.10.5Hanging Wall Veining
MU20-012119.70120.000.300.296.50.6Foot Wall Veining
MU20-014191.30192.150.850.786.21.6Hanging Wall Veining
MU20-015153.75154.700.950.792.90.8Hanging Wall Veining
MU20-01627.9028.600.700.703.40.8Foot Wall Veining
MU20-016224.40224.750.350.2012.50.8Foot Wall Veining
MU20-017167.65168.150.500.345.60.6Foot Wall Veining
MU20-018114.20114.650.450.443.70.5Foot Wall Veining
MU20-018194.40195.250.850.784.51.2Hanging Wall Veining
MU20-03096.2096.550.350.2523.52.0Foot Wall Veining
MU20-032155.70156.851.150.9612.44.0Foot Wall Veining


  1. Where True widths are greater than 3 m, grades are not diluted and are presented as the grade over the composite true width.
  2. Composites that are below 0.5 g/t Au when diluted to 3 m are not reported in this table.

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