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Nighthawk drills 141.8 m of 2.11 g/t Au at Colomac
2020-11-26 07:11 ET - News Release
Dr. Michael Byron reports
NIGHTHAWK INTERSECTS 141.80 METRES OF 2.11 GPT AU (UNCUT), INCLUDING 31.05 METRES OF 4.06 GPT AU
Nighthawk Gold Corp. has released assay results for three drill holes (1,707 metres) completed at zones 2.0 and 3.0 of the Colomac Main sill, part of the Colomac gold project, centrally located within its Indin Lake gold property, Northwest Territories, Canada.
Dr. Michael Byron, president and chief executive officer, commented: "Hole C20-06B undercut previously reported hole C20-06, posting another tremendous intersection of mineralization, and continues to showcase zone 2.0 and zone 1.5 as the best mineralized sections of the Colomac Main sill encountered so far. This area of the sill continues to show strong continuity of mineralization and grade along strike and to depth, where the consistent widening of the quartz diorite host rock to depth provides an excellent opportunity for continued resource expansion.
"Fallout from the COVID-19 pandemic has impacted assay turnaround as significant delays have been experienced in sample shipping and processing. The company is currently working to resolve some of these logistics hurdles and is expected to have additional results ready for release in the near term."
Colomac drilling highlights
Zone 2.0 -- northern boundary:
Hole C20-06B returned 141.80 metres (75.00 m true width) of 2.11 grams per tonne gold including 83.75 metres (45.00 m true width) of 2.73 g/t Au with several internal higher-grade intercepts:
Upper intersection -- 20.90 metres of 2.55 g/t Au, including 14.40 metres of 3.14 g/t Au;
Mid-level intersection -- 20.30 metres of 3.47 g/t Au, including 6.20 metres of 6.06 g/t Au;
Lower intersection -- 31.05 metres of 4.06 g/t Au, including 10.50 metres of 5.11 g/t Au and 15.30 metres of 4.27 g/t Au, and including 6.20 metres of 5.63 g/t Au.
Mineralization on this section spans from near surface to over 660 m vertical depth where it remains open.
Zone 3.0:
Hole C20-11 tested the northern boundary region of zone 3.0, an area of limited drilling, and intersected 34.75 metres (12.00 m true width) of 2.00 g/t Au, including 15.00 metres of 2.56 g/t Au and including 3.50 metres of 5.33 g/t Au, tracking mineralization to 275 m vertical depth where the sill remains open.
Note: All assays are uncut.
Twenty-nine drill holes for a total of 16,421 metres were completed at Colomac in 2020, of which Nighthawk has now reported on 13 holes for 7,711 metres. Additional drilling results are pending from 15 holes for 5,508 metres completed at one of the company's high-grade, high-priority regional targets, the Treasure Island gold project, located approximately 11 kilometres north of Colomac.
COLOMAC DRILL RESULTS -- SUMMARY TABLE (UNCUT)
Hole ID From To Core length True width Gold grade
(metres) (metres) (metres)* (metres) (g/t)
C20-06B 584.50 585.25 0.75 1.10
633.15 634.65 1.50 0.30
640.85 641.60 0.75 0.44
643.70 645.20 1.50 0.52
648.20 790.00 141.80 75.00 2.11
including 654.10 675.00 20.90 12.00 2.55
including 654.10 668.50 14.40 3.14
including 654.10 662.50 8.40 2.82
including 654.10 657.50 3.40 5.11
including 665.50 668.50 3.00 6.65
including 706.25 790.00 83.75 45.00 2.73
including 718.10 738.40 20.30 10.00 3.47
including 718.10 724.30 6.20 6.06
including 720.00 724.30 4.30 8.22
including 734.40 738.40 4.00 6.32
including 734.40 736.60 2.20 10.06
including 749.00 780.05 31.05 16.00 4.06
including 749.00 759.50 10.50 5.11
including 751.00 756.00 5.00 6.53
including 762.50 777.80 15.30 4.27
including 762.50 765.00 2.50 6.30
including 771.60 777.80 6.20 5.63
795.40 797.75 2.35 0.85
including 795.40 796.40 1.00 1.28
C20-09 280.50 289.50 9.00 0.37
including 280.50 283.50 3.00 0.53
294.75 295.50 0.75 0.41
296.25 297.00 0.75 0.44
304.50 305.25 0.75 0.41
315.75 318.00 2.25 0.97
321.75 324.00 2.25 0.43
including 323.25 324.00 0.75 1.00
360.00 361.00 1.00 0.36
C20-11 239.25 274.00 34.75 12.00 2.00
including 240.75 248.75 8.00 2.51
including 259.00 274.00 15.00 5.00 2.56
including 266.75 274.00 7.25 3.88
including 266.75 270.25 3.50 5.33
276.25 279.25 3.00 0.34
283.00 292.00 9.00 1.09
including 283.75 286.00 2.25 1.60
including 289.00 291.25 2.25 1.70
* Lengths are reported as core lengths. True widths vary depending on drill hole dip.
The holes reported today focused on tracking mineralization to depth at zones 2.0 and 3.0.
Zone 2.0 -- northern boundary
Hole C20-06B extended mineralization 80 metres below previously reported hole C20-06 (see press release dated Oct. 20, 2020). The different lithologies intersected within the lower part of hole C20-06B, when compared with overlying hole C20-06, embody a wide interval of alternating quartz gabbro and mafic volcanic units believed to represent slabs of roof pendant mafic volcanic material that were incorporated into the intrusion (magmatic stoping). This has resulted in an illusory narrowing of the quartz diorite true width from 155 metres in hole C20-06 to 90 metres in hole C20-06B. Hole C20-06B continues to demonstrate the strongly mineralized and highly perspective nature of the quartz diorite host rock within the northern part of zone 2.0, as well as its consistent widening to depth.
Zone 3.0
C20-09 and C20-11 explored untested regions to intermediate depths within the southern and northern boundary regions of zone 3.0. Hole C20-11 infilled the northern down-plunge extension of mineralization reported in previous drilling close to the boundary of zone 2.5, intersecting strong and continuous downhole mineralization that remains open to the north. Hole C20-09 was drilled near the southern boundary with higher-grade zone 3.5 to explore a large gap in drill coverage 250 metres north of the centre of zone 3.5, where it intersected predominantly weakly mineralized quartz diorite.
Technical information
Nighthawk has implemented a quality control program to comply with best practices in the sampling and analysis of drill core. Drill core samples were transported in security-sealed bags for analyses at the ALS laboratory in Vancouver, B.C. ALS Global is an ISO/IEC (International Organization for Standardization/International Electrotechnical Commission) 17025-accredited laboratory. Pulp and metallics assaying for gold was conducted on the entire pulverized sample.
As part of its QA/QC program, Nighthawk inserts external gold standards (low to high grade) and blanks every 20 samples in addition to the standards, blanks and pulp duplicates inserted by ALS Global.
About Nighthawk Gold Corp.
Nighthawk is a Canada-based gold exploration company with 100-per-cent ownership of a district-scale land position within the Indin Lake greenstone belt, located approximately 200 km north of Yellowknife, NWT. Nighthawk has advanced its flagship asset Colomac, outlining a robust project with current indicated resources of 25.89 million tonnes with an average grade of 2.01 g/t Au for 1.67 million ounces of gold and inferred resources of 5.71 million tonnes with an average grade of 2.03 g/t Au for 370,000 ounces of gold, with the majority of ounces contained within an underground resource. Near-term resource expansion opportunities exist proximal to the current resources, and additional upside exists throughout the plus-seven-kilometre strike length of the host quartz diorite with a substantial opportunity at depth where the true width is known to expand significantly across a 3.5 km long section.
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