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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).

Authier Lithium

Québec, Canada · Developing · 75.0% 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	0.23 Mt	0.80% Li2O	4.48 kt LCE	30 June 2025
Indicated	3.19 Mt	0.98% Li2O	0.08 Mt LCE	30 June 2025
Inferred	6.35 Mt	0.98% Li2O	0.15 Mt LCE	30 June 2025
Total Resources	9.76 Mt	0.98% Li2O	0.24 Mt LCE	30 June 2025
Proved	6.27 Mt	0.93% Li2O	0.14 Mt LCE	30 June 2025
Probable	5.07 Mt	1.00% Li2O	0.13 Mt LCE	30 June 2025
Total Reserves	11.20 Mt	0.96% Li2O	0.27 Mt LCE	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.

Cut-off grade

0.55% Li2O

Price assumption

A$977.00/t · A$731.00/t

JORC code year

—

Peer benchmark — developing Li projects (28 with resources)Resource size P9Resource grade P16View 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: 20-F: 20-F · 30 June 2025
Reporting code: SK-1300
Convention: exclusive
Currency assumption: A$

Current R&R

Resources

Category	Tonnes (Mt)	Li		As at	Source	Provenance
Category	Tonnes (Mt)	Grade (% Li2O)	Contained (Mt LCE)	As at	Source	Provenance
Measured	0.23 Mt	0.80% Li2O	4.48 kt LCE	30 June 2025	Authier Lithium mineral resource estimate, exclusive of mineral reserves, as at June 30, 2025Unverified Evidence record Authier Lithium Measured · Li · as at 2025-06-30 Reported figure Area Whole project Basis attributable Ore tonnes (t) 226666.66666666666 Grade 0.8000 Contained (t LCE) 4484.373333333333 Classification Resource Source trail 20-F: 20-F Authier Lithium mineral resource estimate, exclusive of mineral reserves, as at June 30, 2025 Published 2025-10-31 Verification Approved; not independently verified · Model extracted Copies a pre-filled issue record so you can send it through your normal channel.

Reserves

Category	Tonnes (Mt)	Li		As at	Source	Provenance
Category	Tonnes (Mt)	Grade (% Li2O)	Contained (Mt LCE)	As at	Source	Provenance
Proved	6.27 Mt	0.93% Li2O	0.14 Mt LCE	30 June 2025	Authier Lithium mineral reserve statement at effective date of June 30, 2025Unverified Evidence record Authier Lithium Proved · Li · as at 2025-06-30 Reported figure Area Whole project Basis attributable Ore tonnes (t) 6266666.666666666 Grade 0.9300 Contained (t LCE) 144126.44 Classification Reserve Source trail 20-F: 20-F Authier Lithium mineral reserve statement at effective date of June 30, 2025 Published 2025-10-31 Verification Approved; not independently verified · Model extracted Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: 20-F: 20-F · published 31 Oct 2025 Ref: Authier Lithium mineral reserve statement at effective date of June 30, 2025 SK-1300 — Reporting code of record: SK-1300 Cutoff 0.55% Li2O — Cut-off grade assumption from the source statement. @ A$ 731/t LCE — Metal price assumption used to derive this estimate. attrib — Figures are net to the issuer's ownership interest as reported (attributable basis) — NOT 100% of the project.
Probable	5.07 Mt	1.00% Li2O	0.13 Mt LCE	30 June 2025	Authier Lithium mineral reserve statement at effective date of June 30, 2025Unverified Evidence record Authier Lithium Probable · Li · as at 2025-06-30 Reported figure Area Whole project Basis attributable Ore tonnes (t) 5066666.666666666 Grade 1.0000 Contained (t LCE) 125298.66666666666 Classification Reserve Source trail 20-F: 20-F Authier Lithium mineral reserve statement at effective date of June 30, 2025 Published 2025-10-31 Verification Approved; not independently verified · Model extracted Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: 20-F: 20-F · published 31 Oct 2025 Ref: Authier Lithium mineral reserve statement at effective date of June 30, 2025
Total Reserves	11.20 Mt	0.96% Li2O	0.27 Mt LCE	30 June 2025	Authier Lithium mineral reserve statement at effective date of June 30, 2025Unverified Evidence record Authier Lithium Total Reserve · Li · as at 2025-06-30 Reported figure Area Whole project Basis attributable Ore tonnes (t) 11200000 Grade 0.9600 Contained (t LCE) 265896.95999999996 Classification Reserve Source trail 20-F: 20-F Authier Lithium mineral reserve statement at effective date of June 30, 2025 Published 2025-10-31 Verification Approved; not independently verified · Model extracted Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: 20-F: 20-F · published 31 Oct 2025 Ref: Authier Lithium mineral reserve statement at effective date of June 30, 2025