HighGold Mining Inc. announced assay results from four (4) resource infill and expansion drill holes completed at the Company's 1.05 Moz indicated at 9.4 g/t gold equivalent (AuEq) JT Deposit (3.0 g/t AuEq cut-off grade) on the Johnson Tract project (Johnson Tract, JT or the Project) in Southcentral Alaska, USA. Drilling at the JT Deposit focused on gaps between inferred resource domains and step-outs at depth. The Company also completed one drill hole (JT22-152) oriented perpendicular to the existing drilling pattern and parallel to the long axis of the JT Deposit, to test for vein orientations that may have been under-represented in previous drilling, and to also test for a potential bounding cross-fault.
Drill hole JT22-152 has delivered the best intersection drilled to date at the JT Deposit. The intersection demonstrates exceptional continuity of very high-grade mineralization, with gold grades locally exceeding the resource block model that it intersects. The results from the other holes reported demonstrate potential additions to the mineral resource between the known inferred resources (holes JT22-148 and 149) and the continuation of the mineralizing system at depth (hole JT22-150).
Details on drill hole locations and significant intersections. A photo of visible gold observed in the hole JT22-152 is shown in Plate 1. JT Deposit Infill & Expansion Highlights: 120.5m at 18.76 g/t Au, 0.55% Cu, 3.86% Zn, 0.93% Pb, 6 g/t Ag (22.1 g/t AuEq) in hole JT22-152, including 10.0m at 39.79 g/t Au, 1.06% Cu, 17.02% Zn, 2.54% Pb, 18 g/t Ag (52.2 g/t AuEq), and 19.1m at 43.87 g/t Au, 0.27% Cu, 2.20% Zn, 0.69% Pb, 6 g/t Ag (43.3 g/t AuEq), and 13.5m at 0.48% Cu, 1.26% Zn (1.56 g/t AuEq) in footwall copper zone, in hole JT22-152; 9.3m at 7.18 g/t Au, 0.22% Cu, 5.57% Zn (10.9 g/t AuEq), in hole JT22-148, including 6.6m at 10.02 g/t Au, 0.29% Cu, 7.30% Zn (14.85 g/t AuEq), and 30.4m at 0.48% Cu and 0.92% Zn (1.33 g/t AuEq) in footwall copper zone, in hole JT22-148 5.3m at 0.65 g/t Au, 20 g/t Ag, 1.72% Cu, 0.57% Zn (3.2 g/t AuEq), in hole JT22-149. Discussion of JT Deposit and Drill Results: The 2022 Johnson Tract drill program commenced early July and concluded mid-October with the completion of 55 drill holes totaling 10,346 meters.
Of this total, five (5) holes totalling 2,738 meters were completed as part of an infill and expansion program on the JT Deposit. The objective was to build on the updated mineral resource announced in July. The Program strived to infill key gaps between the main inferred resource blocks to the northeast, target areas down-plunge of the current resource, and add to the indicated resources.
The Program also included an infill drill hole (JT22-152) into the lower southwest portion of the Indicated Resource to gain a better understanding of the structural and geological controls on mineralization. Hole JT22-152 was collared off the southwest end of the JT Deposit and drilled at 060 azimuth, as opposed to the existing 130/310 azimuth drill pattern. This orientation is parallel to the long axis of the deposit, targeting an area in which the true thickness (as measured across the short axis of the deposit) is approximately 50 to 60 meters.
The hole was drilled at this orientation to test both the theory that the southern edge of the JT Deposit may be bounded by an east-east west cross fault, possibly offsetting the JT Deposit in this area, and to test for high-grade vein orientations within the JT Deposit that may have been missed or under-represented in previous drilling. Hole JT22-152 did encounter a narrow (~2m) fault zone marking the southern edge of the JT Deposit before intersecting a significant mineralized zone from 207.6-321.1m with local visible gold which returned 120.5m at 18.76 g/t Au, 3.86% Zn, 0.93% Pb, 0.55% Cu and 6 g/t Ag (22.1 g/t AuEq), including 10.0m at 39.79 g/t Au, 17.02% Zn, 2.54% Pb, 1.06% Cu and 18 g/t Ag (52.2 g/t AuEq) and 19.1m at 41.35 g/t Au, 2.20% Zn, 0.69% Pb, 0.27% Cu and 6 g/t Ag (43.3 g/t AuEq). Drill hole JT22-152 is expected to have a positive impact on the mineral resource intersecting much higher-grade gold mineralization than the indicated resource grade of 9.4 g/t AuEq, increasing confidence in the geological model,and locally outperforming theblock model where it was intersected.
Twenty-five (25) separate one-meter drill core samples exceeded 30 g/t Au with a high of 225 g/t Au at 318.1-319.1 meters. Applying the same top cap as that used for the mineral resource drops the average gold grade over the 120.5-meter interval from 18.76 g/t to 17.53 g/t, equal to a 7% reduction. A photo of visible gold observed at a depth of 285.6m in the hole JT22-152 is shown in Plate 1. Holes JT22-148 and JT22-149 were drilled in a 50 to 100-meter gap between modeled inferred resource area and successfully intersected high-grade JT-style mineralization including 9.3m at 7.18 g/t Au, 0.22% Cu, 5.57% Zn (10.9 g/t AuEq) in hole JT22-148 and 5.3m at 0.65 g/t Au, 20 g/t Ag, 1.72% Cu, 0.57% Zn (3.2 g/t AuEq) in hole JT22-149.
Hole JT22-150 was drilled at depth approximately 100-meters down-plunge to the northeast of the mineral resources and below holes JT21-130 and JT21-133 which returned 5.8m at 5.0 g/t AuEq and 8.0m at 4.0 g/t AuEq respectively in 2021. Hole JT22-150 returned 9.50m at 0.32 g/t Au, 0.23% Cu, 0.72% Zn marking the continuation of the JT mineralizing system. These holes are expected to incrementally expand the JT Deposit resource.
Assays results for hole JT22-151, drilled 100 meters northeast of the inferred resource, are still pending. The location of the holes released today and presented on a longitudinal section. The Au-Cu-Zn-Ag-Pb mineralization associated with the JT Deposit has been defined over a total strike length of 600 meters and remains open along strike to the northeast and southwest, and at depth.
The true thickness of the JT Deposit typically ranges from 20 to 50 meters, with the Indicated Resource averaging 40m. To date, assay results have been released for 19 of the 55 drill holes completed during the 2022 Program. Remaining assay results will be released in batches on an ongoing basis pending review and meeting Company quality assurance-quality control protocols.
The Company is currently focusing on environmental baseline and engineering studies to support the continued advancement of the Project.