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).

Barroso

Vila Real, Portugal · Developing · 100.0% ownedUnverified

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 (% Li2O)	Contained (Mt LCE)	As at
Measured	8.70 Mt	1.06% Li2O	0.23 Mt LCE	01 Aug 2025
Indicated	18.10 Mt	1.05% Li2O	0.47 Mt LCE	01 Apr 2026
Inferred	12.30 Mt	1.04% Li2O	0.31 Mt LCE	01 Apr 2026
Total Resources	19.20 Mt	1.10% Li2O	0.52 Mt LCE	01 Apr 2026
Proved	—	—	—	—
Probable	20.00 Mt	0.98% Li2O	0.49 Mt LCE	15 July 2026
Total Reserves	20.00 Mt	0.99% Li2O	0.49 Mt LCE	15 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.

Cut-off grade

0.50% Li2O · 1,200.00% Li2O

Price assumption

£1200.00/t

JORC code year

2012

Peer benchmark — developing Li projects (28 with resources)Resource size P23Resource grade P38View 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: Barroso Li Project: Definitive Feasibility Study · 15 July 2026
Reporting code: JORC 2012
Convention: inclusive
Currency assumption: GBP
Disagreement flags: 7 rows

Current R&R

Resources

Area	Category	Tonnes (Mt)	Li		As at	Source	Provenance
Area	Category	Tonnes (Mt)	Grade (% Li2O)	Contained (Mt LCE)	As at	Source	Provenance
Total	Measured	8.70 Mt	1.06% Li2O	0.23 Mt LCE	01 Aug 2025	Table 2-1 - 2025 JORC Geological Resources Statement Summary (All Deposits)Unverified Evidence record Barroso Measured · Li · as at 2025-08-01 Reported figure Area Whole project Basis 100% Ore tonnes (t) 8700000.0000 Grade 1.0600 Contained (t LCE) 230236.3000 Classification Resource Source trail Barroso Li Project: Definitive Feasibility Study Table 2-1 - 2025 JORC Geological Resources Statement Summary (All Deposits) Published 2026-07-15 Verification Approved; not independently verified · Model extracted QA WARN: identical figures appear under ANOTHER area label of this project in the same document — likely one printed estimate stored twice (a summary/grouping line duplicating its leaf). Keep one copy; reject the relabelled twin. \| QA approved: verified against the source print by the tranche-21 agent pass Copies a pre-filled issue record so you can send it through your normal channel.

NOA

Inferred

0.05 Mt

0.95% Li2O

0.99 kt LCE

15 Sept 2025

Table 3. Detailed Breakdown of Updated Mineral Resource Estimation SummaryUnverified

notes (15)

Source: Barroso Lithium Project - JORC Resource Update · published 15 Sept 2025

Ref: Table 3. Detailed Breakdown of Updated Mineral Resource Estimation Summary

JORC 2012 — Reporting code of record: JORC 2012
Cutoff 0.50% Li2O — Cut-off grade assumption from the source statement.

QA notes:

QA WARN: identical figures to a stored row of the same company/project/area/category under a DIFFERENT as-at date — likely a re-presentation (DFS / annual statement / global MRE restating an already-stored estimate). Keep one operative copy; verify supersession before storing both. QA BLOCK: recomputed contained 950.0000 t Li2O vs reported 400 t Li2O (137.50% disagreement) 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).
QA fix: tonnes_t=46000
QA BLOCK is a Table-3 coarse-rounding artifact: "NOA ... Inferred
0.1
0.95
0.5
400" cannot reconcile (0.1Mt x 0.95% = 950 t vs 400 t), but Appendix 1 NOA prints the precise figure "Total
...
46,000
0.95
0.5
..." — 46,000 t x 0.95% = 437 t ~ printed 400 ✓; stored t=100,000 overstates 2.2x; also carries the near-dup
QA approved: verified against the source print by the tranche-23 agent pass

NOA

Total Resources

0.66 Mt

1.03% Li2O

0.02 Mt LCE

15 Sept 2025

Table 3. Detailed Breakdown of Updated Mineral Resource Estimation SummaryUnverified

notes (13)

Source: Barroso Lithium Project - JORC Resource Update · published 15 Sept 2025

Ref: Table 3. Detailed Breakdown of Updated Mineral Resource Estimation Summary

JORC 2012 — Reporting code of record: JORC 2012
Cutoff 0.50% Li2O — Cut-off grade assumption from the source statement.

QA notes:

QA WARN: identical figures to a stored row of the same company/project/area/category under a DIFFERENT as-at date — likely a re-presentation (DFS / annual statement / global MRE restating an already-stored estimate). Keep one operative copy; verify supersession before storing both. QA BLOCK: recomputed contained 7210.0000 t Li2O vs reported 6700 t Li2O (7.61% disagreement) 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).
QA fix: tonnes_t=661000
QA BLOCK (7.61%) is Table-3 rounding: "NOA ... Total
0.7
1.03
0.8
6,700" (0.7Mt x 1.03% = 7,210), but Appendix 1 NOA prints the precise total "661,000
1.03
0.8
6,700" — 661,000 x 1.03% = 6,808 ~ 6,700 ✓; also carries the near-dup different-as-at warn for central
QA approved: verified against the source print by the tranche-23 agent pass

Reserves

Area	Category	Tonnes (Mt)	Li		As at	Source	Provenance
Area	Category	Tonnes (Mt)	Grade (% Li2O)	Contained (Mt LCE)	As at	Source	Provenance
Total	Total Reserves	20.00 Mt	0.99% Li2O	0.49 Mt LCE	15 July 2026	Table 3-1: Barroso Lithium Project Mineral ReservesUnverified Evidence record Barroso Total Reserve · Li · as at 2026-07-15 Reported figure Area Whole project Basis 100% Ore tonnes (t) 20000000.0000 Grade 0.9900 Contained (t LCE) 489654.0000 Classification Reserve Source trail Barroso Li Project: Definitive Feasibility Study Table 3-1: Barroso Lithium Project Mineral Reserves Published 2026-07-15 Verification Approved; not independently verified · Model extracted QA approved: verified against the source print by the tranche-21 agent pass Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: Barroso Li Project: Definitive Feasibility Study · published 15 July 2026 Ref: Table 3-1: Barroso Lithium Project Mineral Reserves JORC 2012 — Reporting code of record: JORC 2012 Cutoff 1,200.00% Li2O — Cut-off grade assumption from the source statement. @ £ 1,200/t LCE — Metal price assumption used to derive this estimate. QA notes: QA approved: verified against the source print by the tranche-21 agent pass
Aldeia	Probable	1.60 Mt	1.09% Li2O	0.04 Mt LCE	15 July 2026	Table 3-1: Barroso Lithium Project Mineral ReservesUnverified Evidence record Barroso Probable · Li · as at 2026-07-15 Reported figure Area Aldeia Basis 100% Ore tonnes (t) 1600000.0000 Grade 1.0900 Contained (t LCE) 43129.1200 Classification Reserve Source trail Barroso Li Project: Definitive Feasibility Study Table 3-1: Barroso Lithium Project Mineral Reserves Published 2026-07-15 Verification Approved; not independently verified · Model extracted QA approved: verified against the source print by the tranche-21 agent pass Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: Barroso Li Project: Definitive Feasibility Study
Grandão	Probable	11.40 Mt	0.98% Li2O	0.28 Mt LCE	15 July 2026	Table 3-1: Barroso Lithium Project Mineral ReservesUnverified Evidence record Barroso Probable · Li · as at 2026-07-15 Reported figure Area Grandão Basis 100% Ore tonnes (t) 11400000.0000 Grade 0.9800 Contained (t LCE) 276283.5600 Classification Reserve Source trail Barroso Li Project: Definitive Feasibility Study Table 3-1: Barroso Lithium Project Mineral Reserves Published 2026-07-15 Verification Approved; not independently verified · Model extracted QA approved: verified against the source print by the tranche-21 agent pass Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: Barroso Li Project: Definitive Feasibility Study
NOA	Probable	0.50 Mt	0.90% Li2O	0.01 Mt LCE	15 July 2026	Table 3-1: Barroso Lithium Project Mineral ReservesUnverified Evidence record Barroso Probable · Li · as at 2026-07-15 Reported figure Area NOA Basis 100% Ore tonnes (t) 500000.0000 Grade 0.9000 Contained (t LCE) 11128.5000 Classification Reserve Source trail Barroso Li Project: Definitive Feasibility Study Table 3-1: Barroso Lithium Project Mineral Reserves Published 2026-07-15 Verification Approved; not independently verified · Model extracted QA approved: verified against the source print by the tranche-21 agent pass Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: Barroso Li Project: Definitive Feasibility Study
Pinheiro	Probable	2.10 Mt	1.02% Li2O	0.05 Mt LCE	15 July 2026	Table 3-1: Barroso Lithium Project Mineral ReservesUnverified Evidence record Barroso Probable · Li · as at 2026-07-15 Reported figure Area Pinheiro Basis 100% Ore tonnes (t) 2100000.0000 Grade 1.0200 Contained (t LCE) 52971.6600 Classification Reserve Source trail Barroso Li Project: Definitive Feasibility Study Table 3-1: Barroso Lithium Project Mineral Reserves Published 2026-07-15 Verification Approved; not independently verified · Model extracted QA approved: verified against the source print by the tranche-21 agent pass Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: Barroso Li Project: Definitive Feasibility Study
Reservatório	Probable	4.40 Mt	0.95% Li2O	0.10 Mt LCE	15 July 2026	Table 3-1: Barroso Lithium Project Mineral ReservesUnverified Evidence record Barroso Probable · Li · as at 2026-07-15 Reported figure Area Reservatório Basis 100% Ore tonnes (t) 4400000.0000 Grade 0.9500 Contained (t LCE) 103371.4000 Classification Reserve Source trail Barroso Li Project: Definitive Feasibility Study Table 3-1: Barroso Lithium Project Mineral Reserves Published 2026-07-15 Verification Approved; not independently verified · Model extracted QA approved: verified against the source print by the tranche-21 agent pass Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: Barroso Li Project: Definitive Feasibility Study