Mandalay Resources Corporation (TSX: MND) (OTCQB: MNDJF) is pleased to provide an update on the encouraging results from the Björkdal Depth Testing drilling program.
Björkdal Depth Testing Highlights
Note: Significant drill composites are provided in Table 1 in the Appendix to this document.
Dominic Duffy, President and Chief Executive Officer of Mandalay, commented, “Given Björkdal’s long mine life of over 10 years, our exploration focus there has shifted away from incremental additions to existing resources and reserves to identifying and drilling more prospective areas with higher-grade mineralization possibilities. These exciting initial high-grade intercepts from the depth extension drilling have demonstrated significant continuation within the Lake Zone area. Follow up infill drilling will be ongoing as we endeavour to define the breadth of veining and bring these areas to production in the short term.”
Mr. Duffy continued, “Delivering an additional high-grade mining area for the operations will further enhance our ability to be selective in ore scheduling and ultimately lift production grade.”
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.”
Björkdal Depth Extension
Since September 2020, a major focus of exploration at Björkdal has been on the depth and eastern extension of the Lake Zone veining. This veining sits beneath the marble unit, below and to the south of the Aurora Zone. This initial phase of drilling encompasses nine drillholes and has intercepted 15 veins containing some of the best grades seen at Björkdal. Interpretation of the drilling indicates that the veining is continuous though all holes drilled which is supported by our understanding of Lake Zone veining. Grades along these veins vary, however, for a 100 m strike along veining at 1600N three drillholes average a grade of 4.7 g/t gold over nominal mining width of 3 m.
Figure 1: Drill core from hole MU20-023 showing veining from a composited grade of 119.3 g/t gold over a true width of 0.44 m:
As well as the vein intercepts themselves, skarnified marble was intercepted in two of the drill holes indicating either a depth continuation to the previously mined Lake Zone Skarn or a discreet alterations lens. Veining within these lenses has been proven to be enriched and skarnified areas have predominantly delivered high grade ore so the presence of the alteration is highly encouraging.
The results of drilling in this area suggest the possibility of a significant increase in the development life of the Björkdal mine by providing a new mining area beyond the current workings on Main Zone and Aurora.
The drilling undertaken on this program to date marks the initial phase of exploration and an infill program has begun and is expected to be completed in Q2 2021.
Figure 2: Plan section of Björkdal mine illustrating the location of drilling and results from the Björkdal Deeps program. Newly extended veining it interpreted in red. Marble contact is interpreted in blue:
Figure 3: North-South Cross Section illustrating the location and orientation of the new intercepts extending the Lake Zone veining down and to the east. Veining and interpreted lithology is displayed at 1780E with off-section holes projected onto the plain:
Drilling and Assaying
All diamond drill core was logged and sampled by Björkdal geologists. Exploration drill hole samples were sent to CRS Laboratories Oy (“CRS”) in Kempele, Finland for sample preparation and assaying.
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. See March 30, 2020, Technical Report entitled “Technical Report on the Björkdal Gold Mine, Sweden”, available on SEDAR (www.sedar.com), for a complete description of drilling, sampling, and assaying procedures.
Chris Davis, Vice President of Operational Geology and Exploration at Mandalay Resources, is a Chartered Professional of the Australasian 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.
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.
Table 1. Björkdal Deeps Significant Drilling Composites
|Drill Hole ID||From (m)||To (m)||Drill Width
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We acknowledge the [financial] support of the Government of Canada.