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Reporting assumptions

These choices persist and are added to shared URLs.

Ownership basis

Show the full project inventory before ownership adjustment.

Display scale

Display contained quantities in millions of ounces or tonnes.

Resource treatment

Normalise Resources to exclude Reserves: where a project is flagged inclusive, net Reserves out of Resources so the figure is additional Resources beyond Reserves. Unknown-convention rows are shown as stated.

Resource total

Total Resource includes Inferred (JORC convention). Totals are re-derived from category rows wherever the document discloses them.

Recovery basis

Show the issuer's headline recoverable figure as reported. Lithium-brine reserves already have the brine-processing recovery factor applied; everything else is shown as stated.

Commodity view

Primary view: each commodity in its own contained unit (oz / t).

Xavantina Operations

Brazil · ProducingUnverified

Current R&R by category

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	0.31 Mt	8.05 g/t	0.08 Moz	30 June 2025
Indicated	2.05 Mt	8.86 g/t	0.58 Moz	30 June 2025
Inferred	1.17 Mt	9.75 g/t	0.37 Moz	30 June 2025
Total Resources	1.43 Mt	12.26 g/t	0.56 Moz	30 June 2025
Proved	0.22 Mt	6.48 g/t	0.05 Moz	30 June 2025
Probable	1.88 Mt	6.97 g/t	0.42 Moz	30 June 2025
Total Reserves	2.10 Mt	6.92 g/t	0.47 Moz	30 June 2025

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.

Cut-off grade

1.4600 g/t Au · 3.4300 g/t Au

Price assumption

US$2500.00/oz · US$2100.00/oz

JORC code year

—

Peer benchmark — producing Au projects (282 with resources)Resource size P29Resource grade P96View on grade-tonnage chart →

Percentile of this project's current total Resource among covered peers (P100 = largest / highest grade). Basis and Inferred toggles apply.

Data quality

Latest source: 40-F: 40-F — a991-2026aif.htm (AIF, backfilled exhibit) · 30 June 2025
Reporting code: SK-1300
Convention: inclusive
Currency assumption: US$
Disagreement flags: 1 row

Current R&R

Resources

Area	Category	Tonnes (Mt)	Au		As at	Source	Provenance
Area	Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	As at	Source	Provenance
Total	Measured	0.31 Mt	8.05 g/t	0.08 Moz	30 June 2025	Table 1-1: Mineral Resource Estimate — Total rowUnverified Evidence record Xavantina Operations Measured · Au · as at 2025-06-30 Reported figure Area Whole project Basis 100% Ore tonnes (t) 312000.0000 Grade 8.0500 Contained (oz) 80800.0000 Classification Resource Source trail 40-F: 40-F — a991-2026aif.htm (AIF, backfilled exhibit) Table 1-1: Mineral Resource Estimate — Total row Published 2026-03-30 Verification Approved; not independently verified · Model extracted tranche11c QA: verified against printed source table Copies a pre-filled issue record so you can send it through your normal channel.

Reserves

Area	Category	Tonnes (Mt)	Au		As at	Source	Provenance
Area	Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	As at	Source	Provenance
Total	Proved	0.22 Mt	6.48 g/t	0.05 Moz	30 June 2025	Table 1-2: Mineral Reserve Estimate — Total Proven ReserveUnverified Evidence record Xavantina Operations Proved · Au · as at 2025-06-30 Reported figure Area Whole project Basis 100% Ore tonnes (t) 221000.0000 Grade 6.4800 Contained (oz) 46100.0000 Classification Reserve Source trail 40-F: 40-F — a991-2026aif.htm (AIF, backfilled exhibit) Table 1-2: Mineral Reserve Estimate — Total Proven Reserve Published 2026-03-30 Verification Approved; not independently verified · Model extracted tranche11c QA: verified against printed source table Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: 40-F: 40-F — a991-2026aif.htm (AIF, backfilled exhibit) · published 30 Mar 2026 Ref: Table 1-2: Mineral Reserve Estimate — Total Proven Reserve SK-1300 — Reporting code of record: SK-1300 Cutoff 3.43 g/t Au — Cut-off grade assumption from the source statement. @ US$ 2,100/oz — Metal price assumption used to derive this estimate. QA notes: tranche11c QA: verified against printed source table
Total	Probable	1.88 Mt	6.97 g/t	0.42 Moz	30 June 2025	Table 1-2: Mineral Reserve Estimate — Total Probable ReserveUnverified Evidence record Xavantina Operations Probable · Au · as at 2025-06-30 Reported figure Area Whole project Basis 100% Ore tonnes (t) 1875000.0000 Grade 6.9700 Contained (oz) 420100.0000 Classification Reserve Source trail 40-F: 40-F — a991-2026aif.htm (AIF, backfilled exhibit) Table 1-2: Mineral Reserve Estimate — Total Probable Reserve Published 2026-03-30 Verification Approved; not independently verified · Model extracted tranche11c QA: verified against printed source table Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: 40-F: 40-F — a991-2026aif.htm (AIF, backfilled exhibit) · published 30 Mar 2026
Total	Total Reserves	2.10 Mt	6.92 g/t	0.47 Moz	30 June 2025	Table 1-2: Mineral Reserve Estimate — Total Proven and Probable ReserveUnverified Evidence record Xavantina Operations Total Reserve · Au · as at 2025-06-30 Reported figure Area Whole project Basis 100% Ore tonnes (t) 2096000.0000 Grade 6.9200 Contained (oz) 466200.0000 Classification Reserve Source trail 40-F: 40-F — a991-2026aif.htm (AIF, backfilled exhibit) Table 1-2: Mineral Reserve Estimate — Total Proven and Probable Reserve Published 2026-03-30 Verification Approved; not independently verified · Model extracted tranche11c QA: verified against printed source table Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: 40-F: 40-F — a991-2026aif.htm (AIF, backfilled exhibit)
Matinha	Probable	0.08 Mt	6.65 g/t	0.02 Moz	30 June 2025	Table 1-2: Mineral Reserve EstimateUnverified Evidence record Xavantina Operations Probable · Au · as at 2025-06-30 Reported figure Area Matinha Basis 100% Ore tonnes (t) 82000.0000 Grade 6.6500 Contained (oz) 17600.0000 Classification Reserve Source trail 40-F: 40-F — a991-2026aif.htm (AIF, backfilled exhibit) Table 1-2: Mineral Reserve Estimate Published 2026-03-30 Verification Approved; not independently verified · Model extracted tranche11c QA: verified against printed source table Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: 40-F: 40-F — a991-2026aif.htm (AIF, backfilled exhibit) · published 30 Mar 2026 Ref: Table 1-2: Mineral Reserve Estimate
Santo Antônio	Proved	0.22 Mt	6.48 g/t	0.05 Moz	30 June 2025	Table 1-2: Mineral Reserve EstimateUnverified Evidence record Xavantina Operations Proved · Au · as at 2025-06-30 Reported figure Area Santo Antônio Basis 100% Ore tonnes (t) 221000.0000 Grade 6.4800 Contained (oz) 46100.0000 Classification Reserve Source trail 40-F: 40-F — a991-2026aif.htm (AIF, backfilled exhibit) Table 1-2: Mineral Reserve Estimate Published 2026-03-30 Verification Approved; not independently verified · Model extracted tranche11c QA: verified against printed source table Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: 40-F: 40-F — a991-2026aif.htm (AIF, backfilled exhibit) · published 30 Mar 2026 Ref: Table 1-2: Mineral Reserve Estimate
Santo Antônio	Probable	1.79 Mt	6.98 g/t	0.40 Moz	30 June 2025	Table 1-2: Mineral Reserve EstimateUnverified Evidence record Xavantina Operations Probable · Au · as at 2025-06-30 Reported figure Area Santo Antônio Basis 100% Ore tonnes (t) 1793000.0000 Grade 6.9800 Contained (oz) 402500.0000 Classification Reserve Source trail 40-F: 40-F — a991-2026aif.htm (AIF, backfilled exhibit) Table 1-2: Mineral Reserve Estimate Published 2026-03-30 Verification Approved; not independently verified · Model extracted tranche11c QA: verified against printed source table Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: 40-F: 40-F — a991-2026aif.htm (AIF, backfilled exhibit) · published 30 Mar 2026 Ref: Table 1-2: Mineral Reserve Estimate