View settings100% · M+I+I · Resources excl. reserves · Native commodities

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).

Sierra Gorda

Antofagasta, Chile · Producing · 45.0% ownedManual entry

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.

Au

Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	As at
Measured	899.00 Mt	0.06 g/t	1.81 Moz	31 July 2026
Indicated	1,416.00 Mt	0.06 g/t	2.71 Moz	31 July 2026
Inferred	1,363.00 Mt	0.06 g/t	2.63 Moz	31 July 2026
Total Resources	1,482.00 Mt	0.06 g/t	2.94 Moz	31 July 2026
Proved	820.00 Mt	0.06 g/t	1.67 Moz	31 July 2026
Probable	952.00 Mt	0.06 g/t	1.84 Moz	31 July 2026
Total Reserves	1,100.00 Mt	0.06 g/t	2.12 Moz	31 July 2026

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.

Cu

Category	Tonnes (Mt)	Grade (% Cu)	Contained (Mt Cu)	As at
Measured	899.00 Mt	0.39%	3.48 Mt Cu	31 July 2026
Indicated	1,416.00 Mt	0.35%	4.95 Mt Cu	31 July 2026
Inferred	1,363.00 Mt	0.36%	4.95 Mt Cu	31 July 2026
Total Resources	1,482.00 Mt	0.32%	4.77 Mt Cu	31 July 2026
Proved

Mo

Category	Tonnes (Mt)	Grade (% Mo)	Contained (Mt Mo)	As at
Measured	899.00 Mt	0.02%	0.19 Mt Mo	31 July 2026
Indicated	1,416.00 Mt	0.01%	0.19 Mt Mo	31 July 2026
Inferred	1,363.00 Mt	0.01%	0.19 Mt Mo	31 July 2026
Total Resources	1,482.00 Mt	0.01%	0.21 Mt Mo	31 July 2026
Proved

Cut-off grade

0.0000 g/t Au · 0.0000 % Mo · 0.0000 % Cu

Price assumption

—

JORC code year

2012

Peer benchmark — producing Cu projects (98 with resources)Resource size P83Resource grade P42View 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: 61% Increase in Sierra Gorda Ore Reserve Estimate · 31 July 2026
Reporting code: JORC 2012
Convention: inclusive
Currency assumption: A$

Current R&R

Resources

Area	Category	Tonnes (Mt)	Au		Cu		Mo		As at	Source	Provenance
Area	Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	Grade (% Cu)	Contained (Mt Cu)	Grade (% Mo)	Contained (Mt Mo)	As at	Source	Provenance
Total	Total Resources	1,482.00 Mt

Reserves

Area	Category	Tonnes (Mt)	Au		Cu		Mo		As at	Source	Provenance
Area	Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	Grade (% Cu)	Contained (Mt Cu)	Grade (% Mo)	Contained (Mt Mo)	As at	Source	Provenance
Total	Total Reserves	1,100.00 Mt	0.06 g/t	2.12 Moz	0.39%	4.29 Mt Cu	0.02%	0.18 Mt Mo	31 July 2026	1Unverified Evidence record Sierra Gorda Total Reserve · Cu · as at 2026-07-31 Reported figure Area Whole project Basis 100% Ore tonnes (t) 1100000000.0000 Grade 0.3900 Contained (t Cu) 4290000.0000 Classification Reserve Source trail 61% Increase in Sierra Gorda Ore Reserve Estimate 1 Published 2026-08-25 Verification Approved; not independently verified · Model extracted QA WARN: cross-category subtotal — this whole-project total_reserve row equals the proved category value while probable rows exist (an M&I/P&P-style total excluding probable — t24 LUN / t25 GMIN-IMG class). Reject the subtotal; the full-set total (or leaves) carries the estimate. This is the SYSTEMIC M&I-as-total class (t71: 22+ rejects across two agents) — only a Measured+Indicated+Inferred total is total_resource; P&P → total_reserve is always valid. QA WARN: tonnes do NOT tie out within this group — proved + probable sum to 2,200,000,000 and exceed the stated total_reserve of 1,100,000,000 by 100.0%, beyond print rounding. Reserve categories are exhaustive, so one of these rows contradicts the others; verify each against the printed table and reject the one that does not appear. \| QA approve (t119v): source-table reconciled; printed values, basis and vintage verified \| t119v Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: 61% Increase in Sierra Gorda Ore Reserve Estimate · published 25 Aug 2026 Ref: 1 JORC 2012 — Reporting code of record: JORC 2012 QA notes: QA WARN: cross-category subtotal — this whole-project total_reserve row equals the proved category value while probable rows exist (an M&I/P&P-style total excluding probable — t24 LUN / t25 GMIN-IMG class). Reject the subtotal; the full-set total (or leaves) carries the estimate. This is the SYSTEMIC M&I-as-total class (t71: 22+ rejects across two agents) — only a Measured+Indicated+Inferred total is total_resource; P&P → total_reserve is always valid. QA WARN: tonnes do NOT tie out within this group — proved + probable sum to 2,200,000,000 and exceed the stated total_reserve of 1,100,000,000 by 100.0%, beyond print rounding. Reserve categories are exhaustive, so one of these rows contradicts the others; verify each against the printed table and reject the one that does not appear. QA approve (t119v): source-table reconciled; printed values, basis and vintage verified t119v
OC Sulphide	Proved	318.00 Mt	0.07 g/t	0.72 Moz	0.41%	1.30 Mt Cu	0.03%	0.08 Mt Mo	30 June 2025	242Unverified Evidence record Sierra Gorda Proved · Au · as at 2025-06-30 Reported figure Area OC Sulphide Basis 100% Ore tonnes (t) 318000000.0000 Grade 0.0700 Contained (oz) 715675.6186 Classification Reserve Source trail South32 Annual Report 2025 (annual Resource and Reserve declaration) 242 Published 2025-08-28 Verification Approved; not independently verified · Model extracted QA INFO: possible missing commodity coverage — the document prints Fe grade/contained column(s) but the extraction emitted no Fe rows; verify the R&R table columns (live class: GMTL Pilot Mountain Zn). Copies a pre-filled issue record so you can send it through your normal channel.	notes (3)
OC Sulphide	Probable	358.00 Mt	0.06 g/t	0.69 Moz	0.37%	1.32 Mt Cu	0.01%	0.05 Mt Mo	30 June 2025	242Unverified Evidence record Sierra Gorda Probable · Mo · as at 2025-06-30 Reported figure Area OC Sulphide Basis 100% Ore tonnes (t) 358000000.0000 Grade 0.0140 Contained (t Mo) 50120.0000 Classification Reserve Source trail South32 Annual Report 2025 (annual Resource and Reserve declaration) 242 Published 2025-08-28 Verification Approved; not independently verified · Model extracted QA INFO: possible missing commodity coverage — the document prints Fe grade/contained column(s) but the extraction emitted no Fe rows; verify the R&R table columns (live class: GMTL Pilot Mountain Zn). Copies a pre-filled issue record so you can send it through your normal channel.	notes (3)
Stockpile	Proved	56.00 Mt	0.05 g/t	0.09 Moz	0.27%	0.15 Mt Cu	0.01%	0.01 Mt Mo	31 July 2026	2Unverified Evidence record Sierra Gorda Proved · Au · as at 2026-07-31 Reported figure Area Stockpile Basis 100% Ore tonnes (t) 56000000.0000 Grade 0.0500 Contained (oz) 90022.0904 Classification Reserve Source trail 61% Increase in Sierra Gorda Ore Reserve Estimate 2 Published 2026-08-25 Verification Approved; not independently verified · Model extracted QA INFO: inclusive-of-reserves flag cleared — the flag describes resource statements; reserve rows carry none. \| QA approve (t119v): source-table reconciled; printed values, basis and vintage verified \| t119v Copies a pre-filled issue record so you can send it through your normal channel.	notes (5) Source:
Stockpile	Total Reserves	56.00 Mt	0.05 g/t	0.09 Moz	0.27%	0.15 Mt Cu	0.01%	0.01 Mt Mo	31 July 2026	2Manual entry Evidence record Sierra Gorda Total Reserve · Mo · as at 2026-07-31 Reported figure Area Stockpile Basis 100% Ore tonnes (t) 56000000.0000 Grade 0.0120 Contained (t Mo) 6720.0000 Classification Reserve Source trail 61% Increase in Sierra Gorda Ore Reserve Estimate 2 Published 2026-08-25 Verification Approved; not independently verified · Manual entry QA capture (t119v): source-verified printed row omitted by the model/canonicalizer; page 2: Stockpile Reserve Total \| 56 Mt \| 0.012% Mo \| t119v Copies a pre-filled issue record so you can send it through your normal channel.	notes (5) Source:
Sulphide	Proved	446.00 Mt	0.06 g/t	0.86 Moz	0.41%	1.83 Mt Cu	0.02%	0.09 Mt Mo	31 July 2026	2Unverified Evidence record Sierra Gorda Proved · Cu · as at 2026-07-31 Reported figure Area Sulphide Basis 100% Ore tonnes (t) 446000000.0000 Grade 0.4100 Contained (t Cu) 1828600.0000 Classification Reserve Source trail 61% Increase in Sierra Gorda Ore Reserve Estimate 2 Published 2026-08-25 Verification Approved; not independently verified · Model extracted QA INFO: inclusive-of-reserves flag cleared — the flag describes resource statements; reserve rows carry none. \| QA approve (t119v): source-table reconciled; printed values, basis and vintage verified \| t119v Copies a pre-filled issue record so you can send it through your normal channel.	notes (5) Source:
Sulphide	Probable	594.00 Mt	0.06 g/t	1.15 Moz	0.39%	2.32 Mt Cu	0.01%	0.08 Mt Mo	31 July 2026	2Unverified Evidence record Sierra Gorda Probable · Au · as at 2026-07-31 Reported figure Area Sulphide Basis 100% Ore tonnes (t) 594000000.0000 Grade 0.0600 Contained (oz) 1145852.6077 Classification Reserve Source trail 61% Increase in Sierra Gorda Ore Reserve Estimate 2 Published 2026-08-25 Verification Approved; not independently verified · Model extracted QA INFO: inclusive-of-reserves flag cleared — the flag describes resource statements; reserve rows carry none. \| QA approve (t119v): source-table reconciled; printed values, basis and vintage verified \| t119v Copies a pre-filled issue record so you can send it through your normal channel.	notes (5) Source:
Sulphide	Total Reserves	1,040.00 Mt	0.06 g/t	2.01 Moz	0.40%	4.16 Mt Cu	0.02%	0.18 Mt Mo	31 July 2026	2Unverified Evidence record Sierra Gorda Total Reserve · Au · as at 2026-07-31 Reported figure Area Sulphide Basis 100% Ore tonnes (t) 1040000000.0000 Grade 0.0600 Contained (oz) 2006206.5859 Classification Reserve Source trail 61% Increase in Sierra Gorda Ore Reserve Estimate 2 Published 2026-08-25 Verification Approved; not independently verified · Model extracted QA INFO: inclusive-of-reserves flag cleared — the flag describes resource statements; reserve rows carry none. QA WARN: cross-category subtotal — this total_reserve row on area 'Sulphide' equals the sum of the same area's proved+probable leaves — a per-deposit M&I/P&P-style total (t24 LUN/LUG NI 43-101 class). This can be an authoritative issuer-printed per-deposit total or an unhelpful intermediate subtotal. Verify the printed row: retain explicit deposit totals, but reject derived/unprinted or mid-tier rollups before approval. \| QA approve (t119v): source-table reconciled; printed values, basis and vintage verified \| t119v Copies a pre-filled issue record so you can send it through your normal channel.