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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).

Opulencia

Manual 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	—	—	—	—
Indicated	3.15 Mt	2.43 g/t	0.25 Moz	31 Dec 2025
Inferred	3.50 Mt	1.70 g/t	0.19 Moz	31 Dec 2025
Total Resources	6.65 Mt	2.05 g/t	0.44 Moz	31 Dec 2025
Proved	—	—	—	—
Probable	—	—	—	—
Total Reserves	—	—	—	—

Ag

Category	Tonnes (Mt)	Grade (g/t Ag)	Contained (Moz Ag)	As at
Measured	—	—	—	—
Indicated	3.15 Mt	111.00 g/t	11.24 Moz	31 Dec 2025
Inferred	3.50 Mt	81.00 g/t	9.13 Moz	31 Dec 2025
Total Resources	6.65 Mt	95.21 g/t	20.37 Moz	31 Dec 2025
Proved	—	—	—	—
Probable

Cut-off grade

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Price assumption

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JORC code year

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Peer benchmark — Au projects (all stages) (904 with resources)Resource size P38Resource grade P72View 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: Fresnillo plc - Annual Report and Accounts 2025, incl. Mineral Resources and Ore Reserves tables as at 31 Dec 2025 · 31 Dec 2025
Reporting code: unknown
Convention: unknown
Currency assumption: GBP

Current R&R

Resources

Category	Tonnes (Mt)	Au		Ag		As at	Source	Provenance
Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	Grade (g/t Ag)	Contained (Moz Ag)	As at	Source	Provenance
Indicated	3.15 Mt	2.43 g/t	0.25 Moz	111.00 g/t	11.24 Moz	31 Dec 2025	p.287 - Consolidated audited mineral resource statement of exploration projects and prospectsManual entry Evidence record Opulencia Indicated · Au · as at 2025-12-31 Reported figure Area Whole project Basis 100% Ore tonnes (t) 3150000.0000 Grade 2.4300 Contained (oz) 246000.0000 Classification Resource Source trail Fresnillo plc - Annual Report and Accounts 2025, incl. Mineral Resources and Ore Reserves tables as at 31 Dec 2025 p.287 - Consolidated audited mineral resource statement of exploration projects and prospects Published 2026-04-17 Verification Approved; not independently verified · Manual entry t87f spec capture, print-verified — Exploration projects and prospects mineral resource statement, p.287 - Consolidated audited mineral resource statement of exploration projects and prospects; printed 3,150 kt @ 2.43 = 246 koz \| quote: Opulencia – veins US$85.50/t 3,150 2.43 111 — — 246 11,240 — — Copies a pre-filled issue record so you can send it through your normal channel.