| JORC 2012 Mineral Resource Estimate for Sandstone Gold Project as at March 2022 | |||
|---|---|---|---|
| Classification | Tonnes (Mt) | Grade (g/t gold) | Contained gold (koz) |
| Total Indicated | 3.0 | 1.7 | 159 |
| Total Inferred | 9.4 | 1.6 | 476 |
| TOTAL | 12.4 | 1.6 | 635 |
Updated Mineral Resources reported at a cut-off grade of 0.5 g/t gold. Mineral Resources for Indomitable are reported at a cut-off grade of 0.3 g/t gold. Minor discrepancies may occur due to rounding of appropriate significant figures.
Resource Estimate Sandstone Gold Project
Independent JORC 2012 Resource Estimate
| Indicated | Inferred | Total | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Deposit | Tonnage (Mt) | Grade g/t | Gold (koz) | Tonnage (Mt) | Grade g/t | Gold (koz) | Tonnage (Mt) | Grade g/t | Gold (koz) |
| Lord Nelson | 1.0 | 1.8 | 56 | 4.3 | 1.5 | 211 | 5.3 | 1.6 | 267 |
| Lord Henry | 1.6 | 1.5 | 77 | 0.3 | 1.2 | 13 | 1.9 | 1.4 | 90 |
| Vanguard Camp | 0.4 | 2.0 | 26 | 1.9 | 2.0 | 124 | 2.3 | 2.0 | 150 |
| Havilah Camp | 1.0 | 1.5 | 46 | 1.0 | 1.5 | 46 | |||
| Indomitable Camp | 1.7 | 1.3 | 74 | 1.7 | 1.3 | 74 | |||
| Ladybird | 0.1 | 1.9 | 8 | 0.1 | 1.9 | 8 | |||
| Total | 3.0 | 1.7 | 159 | 9.4 | 1.6 | 476 | 12.4 | 1.6 | 635 |
Updated Mineral Resources reported at a cut-off grade of 0.5 g/t gold and are constrained within a A$2,500/oz optimised pit shells based on mining parameters and operating costs typical for Australian open pit extraction deposits of a similar scale and geology. Mineral Resources for Indomitable (reported at a cut-off grade of 0.3 g/t gold) and Ladybird deposits have not been updated. Minor discrepancies may occur due to rounding of appropriate significant figures.
The references in this announcement to Mineral Resource estimates for the Sandstone Gold Project were reported in accordance with Listing Rule 5.8 in the following announcements:
(a): Indomitable & Vanguard Camp: announcement titled: “Maiden Gold Resource at Indomitable & Vanguard Camps, Sandstone WA” 25 Sep 2018; and
(b): Havilah & Ladybird: announcement titled: “Alto increases Total Mineral Resource Estimate to 290,000oz, Sandstone Gold Project” 11 June 2019.
The Company confirms that it is not aware of any new information or data that materially affects the information included in the previous market announcement noted above and that all material assumptions and technical parameters underpinning the Mineral Resource estimates in the previous market announcement continue to apply and have not materially changed.
