Resource Area |
|
|
|
Indicated |
|
|
|
|
|
|
Inferred |
|
|
|
|
Tonnes |
Au (g/t) |
Au (ozs) |
Ag (g/t) |
Ag (ozs) |
AuEq (g/t) |
AuEq (ozs) |
Tonnes |
Au (g/t) |
Au (ozs) |
Ag (g/t) |
Ag (ozs) |
AuEq (g/t) |
AuEq (ozs) |
Doby George8 |
13,662,000 |
0.90 |
394,000 |
|
|
0.90 |
394,000 |
3,270,000 |
0.68 |
71,000 |
|
|
0.68 |
71,000 |
Wood Gulch5 |
|
|
|
|
|
|
|
2,741,000 |
0.75 |
66,000 |
6.2 |
545,000 |
0.82 |
73,000 |
Gravel Creek4 |
1,331,000 |
5.04 |
216,000 |
78.7 |
3,367,000 |
5.95 |
254,000 |
3,933,000 |
4.52 |
571,000 |
76.9 |
9,726,000 |
5.39 |
683,000 |
TOTAL |
14,993,000 |
1.27 |
610,000 |
7.0 |
3,367,000 |
1.35 |
648,000 |
9,944,000 |
2.22 |
708,000 |
32.1 |
10,271,000 |
2.58 |
827,000 |
Notes:
- The effective date of the Wood Gulch-Gravel Creek mineral resource estimate is May 27, 2025.
- In-situ mineral resources are classified in accordance with CIM Definition Standards for Mineral Resources & Mineral Reserves prepared by the CIM Standing Committee on Reserve Definitions.
- The average grades of the tabulations are comprised of the weighted average of block-diluted grades within the underground shells and optimized pits.
- The Gravel Creek MRE is reported using a cut-off grade of 3.0g AuEq/t. Gold equivalent values were calculated using metal prices of US$2,025 per oz for gold and US$24 per oz for silver, and metallurgical recoveries of 95% for gold and 92% for silver. The AuEq calculation accounts for metal prices and recoveries only. The 3.0g AuEq/t cut-off grade was applied to constrain the reported mineral resource estimates to material with reasonable prospects for economic extraction.
- The Au cut-off grade for Wood Gulch Mineral Resources is based on an Au price of US$2,150/oz, an average recovery of 66% Au, a processing rate of 7,500 tonnes per day and cost assumptions including: US$3.02/t mining cost for open-pit mining; US$6.52/t processing cost; US$1.89/t processed G&A cost; and US$5.00/oz Au refining cost.
- The effective date of the Doby George mineral resource estimate is January 27, 2025.
- The project mineral resources are comprised of all model blocks at a cutoff grade of 0.17 g Au/t for all material within optimized pits.
- The gold cutoff grade for Doby George mineral resource estimate is based on an gold price of US$2,150/oz, an average recovery of 66% Au, a processing rate of 7,500 tonnes per day, and cost assumptions including: US$3.02/t mining cost for open-pit mining; US$6.52/t processing cost; US$1.89/t processed G&A cost, and US$5.00/oz Au refining cost. An average royalty of 3% has also been applied to cutoff grade determination.
- The mineral resource estimates described herein may be materially affected by geology, environmental, permitting, legal, title, taxation, sociopolitical, marketing, or other relevant issues.
- There are no known factors related to metallurgical, environmental, permitting, legal, title, taxation, socio-economic, marketing or political issues which could materially affect the mineral resource estimate described in this news release.
- Rounding as required by reporting guidelines may result in apparent discrepancies between tonnes, grade, and contained metal content.
- Mineral resources are not mineral reserves and do not have demonstrated economic viability. An inferred mineral resource estimate has a lower level of confidence than an indicated mineral resource estimate, and has not been converted into a mineral reserve. It is reasonably expected that a majority of the inferred mineral resources could be upgraded to indicated mineral resources with continued exploration.
Gravel Creek Sensitivity Table with Varying Grade Cut-offs |
|
|
|
|
Indicated |
|
|
|
|
|
|
Inferred |
|
|
|
Cutoff (Au g/t) |
Tonnes |
Au (g/t) |
Au (ozs) |
Ag (g/t) |
Ag (ozs) |
AuEq (g/t) |
AuEq (ozs) |
Tonnes |
Au (g/t) |
Au (ozs) |
Ag (g/t) |
Ag (ozs) |
AuEq (g/t) |
AuEq (ozs) |
2.0 |
2,079,000 |
3.72 |
249,000 |
59.6 |
3,986,000 |
4.58 |
305,943 |
5,394,000 |
3.12 |
540,000 |
45.5 |
7,897,000 |
3.77 |
652,814 |
3.0 |
1,315,000 |
4.73 |
200,000 |
75.0 |
3,169,000 |
5.81 |
245,271 |
2,744,000 |
4.16 |
367,000 |
60.20 |
5,307,000 |
5.02 |
442,814 |
All resources were independently estimated by Mine Development Associates of Reno, Nevada and documented.
"2021 Updated Resource Estimates And Technical Report For The Aura Gold-Silver Project, Elko County, Nevada" Effective Date October 14, 2021
- Gravel Creek resource is entirely sulfide material
- Wood Gulch resource is oxide material
- Doby George resource is 81% oxide, 17% mixed and 2% unoxidized in Indicated category and 56% oxide, 37% mixed and 7% unoxidized in Inferred category