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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 | 164.40 Mt | 0.89 g/t | 4.71 Moz | 31 Mar 2026 |
| Indicated | 673.60 Mt | 0.72 g/t | 15.63 Moz | 31 Mar 2026 |
| Inferred | 177.10 Mt | 0.61 g/t | 3.48 Moz | 31 Mar 2026 |
| Total Resources | 785.93 Mt | 0.65 g/t | 16.48 Moz | 31 Mar 2026 |
| Proved | 127.75 Mt | 1.07 g/t | 4.38 Moz | 31 Dec 2024 |
| Probable | 101.43 Mt | 0.91 g/t | 2.97 Moz | 31 Dec 2024 |
| Total Reserves | 229.18 Mt | 1.00 g/t | 7.34 Moz | 31 Dec 2024 |
Sub-category rows are as disclosed (no Reserves-treatment netting); the Total rows honour the Resources treatment and Inferred-policy toggles, so components may not sum to the Total.
Dotted tonnes/grade are derived under the active Resources treatment: tonnes are netted of (or grossed by) the reserve tonnage alongside contained, and grade is re-derived as netted contained ÷ netted tonnes — not the published figures.
| Area | Category | Tonnes (Mt) | Au | As at | Source | Provenance | |
|---|---|---|---|---|---|---|---|
| Grade (g/t Au) | Contained (Moz Au) | ||||||
| Total | Measured | 164.40 Mt | 0.89 g/t | 4.71 Moz | 31 Mar 2026 | TABLE 1: CÔTÉ GOLD CONSOLIDATED MINERAL RESOURCE ESTIMATE – CÔTÉ + GOSSELIN ZONESUnverified | |
notes (5)Source: IAMGOLD Announces Consolidated Mineral Resource Estimate for Côté Gold · published 01 June 2026 Ref: TABLE 1: CÔTÉ GOLD CONSOLIDATED MINERAL RESOURCE ESTIMATE – CÔTÉ + GOSSELIN ZONES
QA notes:
|
| Total | Indicated | 673.60 Mt | 0.72 g/t | 15.63 Moz | 31 Mar 2026 | TABLE 1: CÔTÉ GOLD CONSOLIDATED MINERAL RESOURCE ESTIMATE – CÔTÉ + GOSSELIN ZONESUnverified | notes (5)Source: IAMGOLD Announces Consolidated Mineral Resource Estimate for Côté Gold · published 01 June 2026 Ref: TABLE 1: CÔTÉ GOLD CONSOLIDATED MINERAL RESOURCE ESTIMATE – CÔTÉ + GOSSELIN ZONES
QA notes:
|
| Total | Inferred | 177.10 Mt | 0.61 g/t | 3.48 Moz | 31 Mar 2026 | TABLE 1: CÔTÉ GOLD CONSOLIDATED MINERAL RESOURCE ESTIMATE – CÔTÉ + GOSSELIN ZONESUnverified | notes (5)Source: IAMGOLD Announces Consolidated Mineral Resource Estimate for Côté Gold · published 01 June 2026 Ref: TABLE 1: CÔTÉ GOLD CONSOLIDATED MINERAL RESOURCE ESTIMATE – CÔTÉ + GOSSELIN ZONES
QA notes:
|
| Total | Total Resources | 785.93 Mt | 0.65 g/t | 16.48 Moz | 31 Mar 2026 | derived from 3 rows | — |
| Côté | Measured | 164.40 Mt | 0.89 g/t | 4.71 Moz | 31 Mar 2026 | TABLE 2: MINERAL RESOURCE ESTIMATES VARIANCE – March 31, 2026 Côté sectionUnverified | notes (5)Source: IAMGOLD Announces Consolidated Mineral Resource Estimate for Côté Gold · published 01 June 2026 Ref: TABLE 2: MINERAL RESOURCE ESTIMATES VARIANCE – March 31, 2026 Côté section
QA notes:
|
| Côté | Indicated | 353.60 Mt | 0.71 g/t | 8.03 Moz | 31 Mar 2026 | TABLE 2: MINERAL RESOURCE ESTIMATES VARIANCE – March 31, 2026 Côté sectionUnverified | notes (4)Source: IAMGOLD Announces Consolidated Mineral Resource Estimate for Côté Gold · published 01 June 2026 Ref: TABLE 2: MINERAL RESOURCE ESTIMATES VARIANCE – March 31, 2026 Côté section
|
| Côté | Inferred | 105.20 Mt | 0.58 g/t | 1.96 Moz | 31 Mar 2026 | TABLE 2: MINERAL RESOURCE ESTIMATES VARIANCE – March 31, 2026 Côté sectionUnverified | notes (4)Source: IAMGOLD Announces Consolidated Mineral Resource Estimate for Côté Gold · published 01 June 2026 Ref: TABLE 2: MINERAL RESOURCE ESTIMATES VARIANCE – March 31, 2026 Côté section
|
| Gosselin | Indicated | 310.90 Mt | 0.74 g/t | 7.43 Moz | 31 Mar 2026 | TABLE 2: MINERAL RESOURCE ESTIMATES VARIANCE – March 31, 2026 Gosselin sectionUnverified | notes (4)Source: IAMGOLD Announces Consolidated Mineral Resource Estimate for Côté Gold · published 01 June 2026 Ref: TABLE 2: MINERAL RESOURCE ESTIMATES VARIANCE – March 31, 2026 Gosselin section
|
| Gosselin | Inferred | 41.40 Mt | 0.67 g/t | 0.89 Moz | 31 Mar 2026 | TABLE 2: MINERAL RESOURCE ESTIMATES VARIANCE – March 31, 2026 Gosselin sectionUnverified | notes (4)Source: IAMGOLD Announces Consolidated Mineral Resource Estimate for Côté Gold · published 01 June 2026 Ref: TABLE 2: MINERAL RESOURCE ESTIMATES VARIANCE – March 31, 2026 Gosselin section
|
| Saddle Area | Indicated | 9.10 Mt | 0.57 g/t | 0.17 Moz | 31 Mar 2026 | TABLE 2: MINERAL RESOURCE ESTIMATES VARIANCE – March 31, 2026 Saddle Area sectionUnverified | notes (5)Source: IAMGOLD Announces Consolidated Mineral Resource Estimate for Côté Gold · published 01 June 2026 Ref: TABLE 2: MINERAL RESOURCE ESTIMATES VARIANCE – March 31, 2026 Saddle Area section
QA notes:
|
| Saddle Area | Inferred | 30.50 Mt | 0.64 g/t | 0.63 Moz | 31 Mar 2026 | TABLE 2: MINERAL RESOURCE ESTIMATES VARIANCE – March 31, 2026 Saddle Area sectionUnverified | notes (4)Source: IAMGOLD Announces Consolidated Mineral Resource Estimate for Côté Gold · published 01 June 2026 Ref: TABLE 2: MINERAL RESOURCE ESTIMATES VARIANCE – March 31, 2026 Saddle Area section
|
| Area | Category | Tonnes (Mt) | Au | As at | Source | Provenance | |
|---|---|---|---|---|---|---|---|
| Grade (g/t Au) | Contained (Moz Au) | ||||||
| Total | Proved | 127.75 Mt | 1.07 g/t | 4.38 Moz | 31 Dec 2024 | TABLE 1: MINERAL RESERVES (@100%) SUMMARY / TABLE 3Unverified | notes (2)Source: lAMGOLD Announces Significant Increase in Nelligan Ounces & Update of Global Mineral Reserves and Resources · published 20 Feb 2025 Ref: TABLE 1: MINERAL RESERVES (@100%) SUMMARY / TABLE 3
|
| Total | Probable | 101.43 Mt | 0.91 g/t | 2.97 Moz | 31 Dec 2024 | TABLE 1: MINERAL RESERVES (@100%) SUMMARY / TABLE 3Unverified | notes (2)Source: lAMGOLD Announces Significant Increase in Nelligan Ounces & Update of Global Mineral Reserves and Resources · published 20 Feb 2025 Ref: TABLE 1: MINERAL RESERVES (@100%) SUMMARY / TABLE 3 |
| Total | Total Reserves | 229.18 Mt | 1.00 g/t | 7.34 Moz | 31 Dec 2024 | TABLE 1: MINERAL RESERVES (@100%) SUMMARY / TABLE 3Unverified | notes (2)Source: lAMGOLD Announces Significant Increase in Nelligan Ounces & Update of Global Mineral Reserves and Resources · published 20 Feb 2025 |
| Côté | Proved | 116.06 Mt | 1.05 g/t | 3.90 Moz | 31 Dec 2025 | TABLE 3: MINERAL RESOURCES AND MINERAL RESERVES AS OF DECEMBER 31, 2025Unverified | notes (4)Source: lAMGOLD Reports Mineral Resources and Reserves for the Year Ended 2025 · published 17 Feb 2026 Ref: TABLE 3: MINERAL RESOURCES AND MINERAL RESERVES AS OF DECEMBER 31, 2025 |
| Côté | Probable | 101.11 Mt | 0.97 g/t | 3.14 Moz | 31 Dec 2025 | TABLE 3: MINERAL RESOURCES AND MINERAL RESERVES AS OF DECEMBER 31, 2025Unverified | notes (4)Source: lAMGOLD Reports Mineral Resources and Reserves for the Year Ended 2025 · published 17 Feb 2026 Ref: TABLE 3: MINERAL RESOURCES AND MINERAL RESERVES AS OF DECEMBER 31, 2025 |
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.
Dotted Total-row tonnes/grade are derived under the active Resources treatment: tonnes netted of (or grossed by) the reserve tonnage alongside contained, grade re-derived as netted contained ÷ netted tonnes — not the published figures.
Figures are on a 100% project basis unless a row carries the attrib chip; IAMGOLD CORP holds 70.0% of this project.