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Whole-project rollup at the latest vintage per category: printed project-level rows are preferred, and mining areas are summed (tonnes-weighted grade) only where the issuer prints no project-level row. Per-area and per-source detail in the Current R&R table below.
| Category | Tonnes (Mt) | Grade (g/t Au) | Contained (Moz Au) | As at |
|---|---|---|---|---|
| Measured | — | — | — | — |
| Indicated | 153.70 Mt | 0.29 g/t | 1.45 Moz | 15 Feb 2026 |
| Inferred | 220.80 Mt | 0.22 g/t | 1.55 Moz | 15 Feb 2026 |
| Total Resources | 374.50 Mt | 0.25 g/t | 3.00 Moz | 15 Feb 2026 |
| Proved | — | — | — | — |
| Probable | — | — | — | — |
| Total Reserves | — | — | — | — |
| Category | Tonnes (Mt) | Grade (g/t Ag) | Contained (Moz Ag) | As at |
|---|---|---|---|---|
| Measured | — | — | — | — |
| Indicated | 153.70 Mt | 2.60 g/t | 12.70 Moz | 15 Feb 2026 |
| Inferred | 220.80 Mt | 2.50 g/t | 17.80 Moz | 15 Feb 2026 |
| Total Resources | 374.50 Mt | 2.54 g/t | 30.50 Moz | 15 Feb 2026 |
| Proved | — | — | — | — |
| Probable |
| Category | Tonnes (Mt) | Grade (% Cu) | Contained (Mt Cu) | As at |
|---|---|---|---|---|
| Measured | — | — | — | — |
| Indicated | 153.70 Mt | 0.25% | 0.38 Mt Cu | 15 Feb 2026 |
| Inferred | 220.80 Mt | 0.19% | 0.42 Mt Cu | 15 Feb 2026 |
| Total Resources | 374.50 Mt | 0.21% | 0.80 Mt Cu | 15 Feb 2026 |
| Proved | — | — | — | — |
| Probable |
Percentile of this project's current total Resource among covered peers (P100 = largest / highest grade). Basis and Inferred toggles apply.
| Area | Category | Tonnes (Mt) | Au | Ag | Cu | As at | Source | Provenance | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Grade (g/t Au) | Contained (Moz Au) | Grade (g/t Ag) | Contained (Moz Ag) | Grade (% Cu) | Contained (Mt Cu) | ||||||
| Total | Indicated | 153.70 Mt | 0.29 g/t | 1.45 Moz | 2.60 g/t | 12.70 Moz | 0.25% | ||||
| — |
| — |
| — |
| Total Reserves | — | — | — | — |
| — |
| — |
| — |
| Total Reserves | — | — | — | — |
| 15 Feb 2026 |
| Table 1: Rio Grande Open Pit Mineral Resource Estimate - February 15, 2026Unverified |
notes (4)Source: Aldebaran and Centauri Announce Significant Increase in Mineral Resources for the Rio Grande Gold-Copper Project in Salta, Argentina · published 02 Mar 2026 Ref: Table 1: Rio Grande Open Pit Mineral Resource Estimate - February 15, 2026
QA notes:
|
| Total | Inferred | 220.80 Mt | 0.22 g/t | 1.55 Moz | 2.50 g/t | 17.80 Moz | 0.19% | 0.42 Mt Cu | 15 Feb 2026 | Table 1: Rio Grande Open Pit Mineral Resource Estimate - February 15, 2026Unverified | notes (4)Source: Aldebaran and Centauri Announce Significant Increase in Mineral Resources for the Rio Grande Gold-Copper Project in Salta, Argentina · published 02 Mar 2026 Ref: Table 1: Rio Grande Open Pit Mineral Resource Estimate - February 15, 2026
QA notes:
|
| Total | Total Resources | 374.50 Mt | 0.25 g/t | 3.00 Moz | 2.54 g/t | 30.50 Moz | 0.21% | 0.80 Mt Cu | 15 Feb 2026 | derived from 2 rows | — |
| Oxide | Indicated | 94.10 Mt | 0.26 g/t | 0.78 Moz | 2.10 g/t | 6.30 Moz | 0.20% | 0.19 Mt Cu | 15 Feb 2026 | Table 1: Rio Grande Open Pit Mineral Resource Estimate - February 15, 2026Unverified | notes (3)Source: Aldebaran and Centauri Announce Significant Increase in Mineral Resources for the Rio Grande Gold-Copper Project in Salta, Argentina · published 02 Mar 2026 Ref: Table 1: Rio Grande Open Pit Mineral Resource Estimate - February 15, 2026
|
| Oxide | Inferred | 144.50 Mt | 0.19 g/t | 0.90 Moz | 2.20 g/t | 10.30 Moz | 0.16% | 0.23 Mt Cu | 15 Feb 2026 | Table 1: Rio Grande Open Pit Mineral Resource Estimate - February 15, 2026Unverified | notes (4)Source: Aldebaran and Centauri Announce Significant Increase in Mineral Resources for the Rio Grande Gold-Copper Project in Salta, Argentina · published 02 Mar 2026 Ref: Table 1: Rio Grande Open Pit Mineral Resource Estimate - February 15, 2026
QA notes:
|
| Sulphide | Indicated | 12.30 Mt | 0.36 g/t | 0.14 Moz | 2.30 g/t | 0.90 Moz | 0.29% | 0.04 Mt Cu | 15 Feb 2026 | Table 1: Rio Grande Open Pit Mineral Resource Estimate - February 15, 2026Unverified | notes (3)Source: Aldebaran and Centauri Announce Significant Increase in Mineral Resources for the Rio Grande Gold-Copper Project in Salta, Argentina · published 02 Mar 2026 Ref: Table 1: Rio Grande Open Pit Mineral Resource Estimate - February 15, 2026
|
| Sulphide | Inferred | 0.70 Mt | 0.25 g/t | 0.01 Moz | 4.10 g/t | 0.10 Moz | 0.24% | 2 kt Cu | 15 Feb 2026 | Table 1: Rio Grande Open Pit Mineral Resource Estimate - February 15, 2026Unverified | notes (5)Source: Aldebaran and Centauri Announce Significant Increase in Mineral Resources for the Rio Grande Gold-Copper Project in Salta, Argentina · published 02 Mar 2026 Ref: Table 1: Rio Grande Open Pit Mineral Resource Estimate - February 15, 2026
QA notes:
|
| Transitional | Indicated | 47.30 Mt | 0.34 g/t | 0.52 Moz | 3.60 g/t | 5.50 Moz | 0.33% | 0.16 Mt Cu | 15 Feb 2026 | Table 1: Rio Grande Open Pit Mineral Resource Estimate - February 15, 2026Unverified | notes (3)Source: Aldebaran and Centauri Announce Significant Increase in Mineral Resources for the Rio Grande Gold-Copper Project in Salta, Argentina · published 02 Mar 2026 Ref: Table 1: Rio Grande Open Pit Mineral Resource Estimate - February 15, 2026
|
| Transitional | Inferred | 75.60 Mt | 0.26 g/t | 0.64 Moz | 3.00 g/t | 7.40 Moz | 0.24% | 0.18 Mt Cu | 15 Feb 2026 | Table 1: Rio Grande Open Pit Mineral Resource Estimate - February 15, 2026Unverified | notes (3)Source: Aldebaran and Centauri Announce Significant Increase in Mineral Resources for the Rio Grande Gold-Copper Project in Salta, Argentina · published 02 Mar 2026 Ref: Table 1: Rio Grande Open Pit Mineral Resource Estimate - February 15, 2026
|
Rows are hierarchical, not additive — do not sum a column across rows. Whole-project rows (Area “Total”) already contain the indented named-area rows beneath them, and an issuer's printed per-deposit total can itself contain other listed areas. All derived totals and rollups on this site already exclude the overlapping rows.