Vancouver, British Columbia, Canada – April 28, 2023 – Tudor Gold Corp. (TSXV: TUD) (FRA: H56) (“Tudor Gold” or the “Company”) is pleased to announce the filing of the technical report (the “Report”) for the updated Mineral Resource Estimate on the Goldstorm Deposit (the “MRE” or “2023 Treaty Creek MRE”) at its flagship Treaty Creek Project (the “Project“) located in the Golden Triangle region of British Columbia. The Report is entitled “NI-43-101 Technical Report for the Treaty Creek Project”, with an effective date of April 28, 2023 and was prepared for Tudor Gold by Garth Kirkham Geosystems and JDS Energy & Mining Inc. (“JDS”). The Report is available under the Company’s profile on SEDAR at www.sedar.com or from the Company’s website at www.tudor-gold.com.
Highlights of the 2023 Treaty Creek MRE:
- Indicated Mineral Resource of 23.37 million ounces (Moz) of gold equivalent (AuEQ) within 641.93 million tonnes (Mt) at a grade of 1.13 g/t AuEQ; comprised of:
- 18.75 Moz of gold (Au) at 0.91 g/t, 112.44 Moz of silver (Ag) at 5.45 g/t, and 2.18 billion pounds (Blbs) of copper (Cu) at 0.15 %.
- Inferred Mineral Resource of 7.35 Moz AuEQ within 233.90 Mt at a grade of 0.98 g/t AuEQ; comprised of:
- 5.54 Moz Au at 0.74 g/t, 45.08 Moz Ag at 5.99 g/t, and 848.00 million pounds (Mlbs) of Cu at 0.16 %.
- CS-600 Domain is comprised of an intrusive hosted gold-copper porphyry system and hosts an Indicated Mineral Resource of 9.86 Moz of AuEQ within 278.02 Mt at a grade of 1.10 g/t AuEQ; comprised of:
- 6.22 Moz Au at 0.70 g/t; and 1.98 Blbs of Cu at 0.32 %.
- A 1.0 g/t sensitivity cut-off for all the Indicated Mineral Resource (open-pit and underground) measures 15.18 Moz of AuEQ at a grade of 1.48 g/t AuEQ; comprised of:
- 12.29 Moz of Au at 1.20 g/t, 72.07 Moz of Ag at 7.02 g/t and 1.35 Blbs of Cu at 0.19 %.
- Improved the definition and spatial continuity of the Goldstorm porphyry system which is comprised of six separate mineral domains over an area that measures approximately 2,500 m in length, 1,000 m in width and 1,400 m in depth.
- The Goldstorm Deposit remains open to the south, north, northeast and at depth.
Table 1: Summary of Indicated and Inferred Mineral Resource as of March 15, 20231-5
Mine Area | Tonnage (Mt) | AuEQ (g/t) | Au (g/t) | Cu (%) | Ag (g/t) | AuEQ (koz) | Au (koz) | Cu (Mlb) | Ag (koz) |
Indicated Mineral Resource | |||||||||
Pit | 389.11 | 1.05 | 0.90 | 0.08 | 5.44 | 13,138 | 11,320 | 687 | 68,168 |
Underground | 252.82 | 1.26 | 0.91 | 0.27 | 5.44 | 10,237 | 7,429 | 1,493 | 44,275 |
Combined | 641.93 | 1.13 | 0.91 | 0.15 | 5.45 | 23,375 | 18,750 | 2,180 | 112,443 |
Inferred Mineral Resource | |||||||||
Pit | 160.94 | 0.85 | 0.71 | 0.07 | 6.50 | 4,404 | 3,648 | 248 | 33,628 |
Underground | 72.96 | 1.25 | 0.80 | 0.37 | 4.87 | 2,946 | 1,888 | 600 | 11,452 |
Combined | 233.90 | 0.98 | 0.74 | 0.16 | 5.99 | 7,349 | 5,536 | 848 | 45,080 |
- Mineral Resources, which are not Mineral Reserves, do not have demonstrated economic viability. The estimate of Mineral Resources may be materially affected by environmental, permitting, legal, title, taxation, sociopolitical, marketing, or other relevant issues.
- The Inferred Mineral Resource in this estimate has a lower level of confidence than that applied to an Indicated Mineral Resource and must not be converted to a Mineral Reserve. It is reasonably expected that the majority of the Inferred Mineral Resource could be upgraded to an Indicated Mineral Resource with continued exploration.
- The Mineral Resources in this press release were estimated using the Canadian Institute of Mining, Metallurgy and Petroleum (CIM) Standards on Mineral Resources and Reserves, Definitions (2014) and Best Practices (2019) prepared by the CIM Standing Committee on Reserve Definitions and adopted by CIM Council.
- The Mineral Resource Estimate was prepared for a potential open pit scenario using a constrained pit shell (with 50-degree slopes) at a 0.5 g/t gold equivalent cut-off grade and an underground mining scenario using a 0.7 g/t gold equivalent cut-off grade. Cut-off grades were derived from US$ 1,800/oz gold, US$ 20/oz silver, US$ 3.50/lb copper, CAD:USD of 0.77, C$ 2.50/tonne open pit and C$7.50 underground mining cost, C$ 38.50/tonne milled processing costs, C$ 1.50/tonne G&A cost, and process recoveries of 90 % for gold, 80 % for copper, and 80 % for silver.
- AuEQ g/t = Au g/t + (Ag g/t*0.0098765) + (Cu ppm*0.0001185)
The Goldstorm sensitivity tables (Tables 2 and 3) report the variation of resource grade and tonnage with respect to the change in cut-off grades for the Indicated and Inferred Mineral Resources.
Table 2: Indicated Mineral Resource Cut-off Sensitivity – Combined Pit and Underground1
Cut-off | Tonnage (Mt) | AuEQ (g/t) | Au (g/t) | Cu (%) | Ag (g/t) | AuEQ (koz) | Au (koz) | Cu (Mlb) | Ag (koz) |
0.3 | 730.20 | 1.06 | 0.85 | 0.14 | 5.06 | 24,823 | 19,907 | 2,324 | 118,689 |
0.4 | 714.16 | 1.07 | 0.86 | 0.15 | 5.13 | 24,640 | 19,742 | 2,318 | 117,896 |
0.5 | 682.72 | 1.10 | 0.88 | 0.15 | 5.28 | 24,180 | 19,346 | 2,291 | 115,831 |
0.5 / 0.72 | 641.93 | 1.13 | 0.91 | 0.15 | 5.45 | 23,375 | 18,750 | 2,180 | 112,443 |
0.6 | 631.15 | 1.15 | 0.92 | 0.16 | 5.50 | 23,262 | 18,588 | 2,218 | 111,644 |
0.7 | 559.69 | 1.21 | 0.97 | 0.17 | 5.81 | 21,762 | 17,386 | 2,076 | 104,501 |
0.8 | 479.37 | 1.29 | 1.03 | 0.18 | 6.18 | 19,820 | 15,854 | 1,878 | 95,239 |
0.9 | 397.39 | 1.38 | 1.10 | 0.19 | 6.59 | 17,577 | 14,114 | 1,633 | 84,212 |
1.0 | 319.20 | 1.48 | 1.20 | 0.19 | 7.02 | 15,186 | 12,293 | 1,352 | 72,067 |
- Refer to footnotes to the Mineral Resource Estimate in Table 1 of this News Release.
- The MRE utilizes 0.5 g/t AuEQ for the pit-constrained Mineral Resource and 0.7 g/t AuEQ for the underground Mineral Resource.
Table 3: Inferred Mineral Resource Cut-off Sensitivity – Combined Pit and Underground1
Cut-off | Tonnage (Mt) | AuEQ (g/t) | Au (g/t) | Cu (%) | Ag (g/t) | AuEQ (koz) | Au (koz) | Cu (Mlb) | Ag (koz) |
0.3 | 488.34 | 0.67 | 0.52 | 0.10 | 4.01 | 10,524 | 8,170 | 1,070 | 62,885 |
0.4 | 326.54 | 0.83 | 0.63 | 0.13 | 5.00 | 8,729 | 6,658 | 961 | 52,510 |
0.5 | 244.18 | 0.96 | 0.72 | 0.17 | 5.89 | 7,553 | 5,652 | 896 | 46,261 |
0.5 / 0.72 | 233.90 | 0.98 | 0.74 | 0.16 | 5.99 | 7,349 | 5,536 | 848 | 45,080 |
0.6 | 198.02 | 1.06 | 0.78 | 0.19 | 6.68 | 6,739 | 4,952 | 849 | 42,527 |
0.7 | 163.26 | 1.15 | 0.83 | 0.22 | 7.34 | 6,015 | 4,355 | 796 | 38,506 |
0.8 | 135.32 | 1.23 | 0.88 | 0.25 | 7.83 | 5,341 | 3,830 | 732 | 34,060 |
0.9 | 108.48 | 1.32 | 0.94 | 0.27 | 8.25 | 4,607 | 3,285 | 647 | 28,786 |
1.0 | 84.17 | 1.43 | 1.02 | 0.29 | 8.56 | 3,864 | 2,759 | 547 | 23,169 |
- Refer to footnotes to the Mineral Resource Estimate in Table 1 of this News Release.
- The MRE utilizes 0.5 g/t AuEQ for the pit-constrained Mineral Resource and 0.7 g/t AuEQ for the underground Mineral Resource.
The Goldstorm Deposit consists of six mineral domains with unique geological characteristics. Five of the domains are gold-dominant with lesser proportions of silver and copper. Domain CS-600 is dominantly gold and copper rich, with lesser silver. The CS-600 hosts the majority of the copper at the Goldstorm Deposit and consists of a well-defined intrusive porphyry system. Table 4 summarizes the Indicated and Inferred Mineral Resources for each mineral domain.
Table 4: Mineral Resource by Domain – Combined Pit and Underground1
Indicated Mineral Resources | |||||||||
Domain | Tonnage (Mt) | AuEQ (g/t) | Au (g/t) | Cu (%) | Ag (g/t) | AuEQ (koz) | Au (koz) | Cu (Mlb) | Ag (Moz) |
300H | 234.13 | 1.02 | 0.95 | 0.03 | 3.90 | 7,700.29 | 7,173.49 | 131.05 | 29.36 |
CS-600 | 278.02 | 1.10 | 0.70 | 0.32 | 5.71 | 9,860.70 | 6,217.37 | 1,983.30 | 51.06 |
DS5 | 114.83 | 1.32 | 1.21 | 0.02 | 7.89 | 4,865.34 | 4,456.37 | 56.68 | 29.14 |
R66 | 5.02 | 1.36 | 1.30 | 0.04 | 1.07 | 219.44 | 209.10 | 4.71 | 0.27 |
NS STK | 6.37 | 2.28 | 2.20 | 0.01 | 6.16 | 467.60 | 451.30 | 1.57 | 1.26 |
Copper Belle | 3.57 | 1.00 | 0.90 | 0.03 | 5.50 | 114.45 | 103.58 | 2.53 | 0.63 |
Inferred Mineral Resources | |||||||||
300H | 6.41 | 1.03 | 0.95 | 0.03 | 4.92 | 213.19 | 195.00 | 4.52 | 1.02 |
CS-600 | 96.77 | 1.19 | 0.75 | 0.36 | 6.01 | 3,711.82 | 2,321.60 | 761.68 | 18.71 |
DS5 | 2.78 | 1.37 | 1.22 | 0.05 | 8.69 | 122.28 | 109.30 | 2.84 | 0.78 |
R66 | 0.55 | 2.19 | 2.07 | 0.01 | 9.32 | 38.90 | 36.84 | 0.15 | 0.17 |
NS STK | 1.30 | 2.26 | 2.09 | 0.01 | 14.26 | 94.06 | 86.95 | 0.37 | 0.59 |
In Pit, External2 | 126.64 | 0.79 | 0.69 | 0.03 | 5.86 | 3,206.88 | 2,821.68 | 78.73 | 23.90 |
- Refer to footnotes to the Mineral Resource Estimate in Table 1 of this News Release.
- A mineral estimate of the material within the defined pit that exists outside of the outlined mineral domains was completed and is included within the Inferred Mineral Resource, and listed “In Pit, External”.
Figure 1: 2023 Treaty Creek MRE Domains
Quality Assurance
The 2023 Treaty Creek MRE was prepared under the supervision of Garth Kirkham, P.Geo, FGC, of Kirkham Geosystems Ltd., and Dino Pilotto, P.Eng., of JDS who are independent Qualified Persons, for the purposes of National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”). Mr. Kirkham and Mr. Pilotto have reviewed and approved the technical contents of this news release.
Ken Konkin, P.Geo, President and CEO, Tudor Gold, is the Qualified Person, for the purposes of NI 43-101, responsible for the Project. Mr. Konkin has reviewed, verified, and approved the scientific and technical information in this news release.
ON BEHALF OF THE BOARD OF DIRECTORS OF TUDOR GOLD CORP.
“Ken Konkin”
Ken Konkin
President and Chief Executive Officer
For further information, please visit the Company’s website at www.tudor-gold.com or contact:
Chris Curran
Head of Corporate Development and Communications
Phone: (604) 559 8092
E-Mail: chris.curran@tudor-gold.com
Carsten Ringler
Head of Investor Relations and Communications
Phone: +49 151 55362000
E-Mail: carsten.ringler@tudor-gold.com