Screening read from the public record
How many of the documented conditions for locked metal does Minera Los Pelambres show?
Low
The public filings show few of the documented conditions associated with value in forms routine processing is not designed to recover. That is a screening read of the paperwork, not a verdict on the rock.
What drives this read2 sourced factors · same inputs, same score, every time
- +14Deposit type. Described as Sulphide porphyry copper-molybdenum. Porphyry systems are documented as carrying Mo, Au, Ag, Re and Te as by-product or unrecovered constituents. source
- +4Operating history. Roughly 27 years of processing under successive routes. source
This is a count of documented conditions in the public filings, not a probability and not a claim that metal is present. It moves only on what a cited source already states. A DETECT™ characterisation is what turns it into a measured answer.
Step 1 · what the public record shows
Minera Los Pelambres
Antofagasta plc Annual Report 2024
Compiled from public filings. Every figure below links to its source; where the public record is silent, that is stated, not inferred. Figures are machine-extracted and not yet independently verified by a qualified person — confirm against the linked filing before relying on them.
Identity and ownershipAntofagasta plc (Antofagasta Minerals / AMSA) · Chile · Copper
- Operator
- Antofagasta plc (Antofagasta Minerals / AMSA)highAntofagasta plc AR 2024 — as of 2024-12-31
- Jurisdiction
- Chile — Coquimbo Region (Choapa Province, ~240 km N of Santiago)highMining-Technology — as of 2024
- Primary commodity
- CopperhighAntofagasta plc AR 2024 — as of 2024-12-31
- Deposit type
- Sulphide porphyry copper-molybdenumhighAntofagasta plc AR 2024 / Mining-Technology — as of 2024
- First production
- 1999 (December)highMining-Technology — as of 1999
- Years in operation
- 27derived from first production year
Disclosed interests
- Interest 1
- Antofagasta plc — 60%highBusiness & Human Rights Centre / Antofagasta AR 2024 — as of 2024
- Interest 2
- JX Metals Corp — 15.79%highBusiness & Human Rights Centre — as of 2024
- Interest 3
- Mitsubishi Materials Corp — 10%highBusiness & Human Rights Centre — as of 2024
- Interest 4
- Marubeni Corp — 9.21%highBusiness & Human Rights Centre — as of 2024
- Interest 5
- Mitsubishi Corporation — 5%highMitsubishi Corporation Mineral Resources Group — Copper Business briefing (13 April 2023) — as of 2023-04-13
Byproduct and co-product commodities
- Byproduct 1
- Molybdenum, gold, silverhighAntofagasta plc AR 2024 — as of 2024-12-31
Reported production3 reported figures
| Metal | Quantity | Basis | Period | Source |
|---|---|---|---|---|
| Copper | 319600 t | total | FY2024 (100% basis) | Antofagasta plc AR 2024high |
| Molybdenum | 8400 t | total | FY2024 (100% basis) | Antofagasta plc AR 2024high |
| Gold | 46600 oz | total | FY2024 (100% basis) | Antofagasta plc AR 2024high |
Public technical reportingJORC, 2025
JORC (primary) — Antofagasta plc Annual Report 2024 (Ore Reserves & Mineral Resources statement), 2025, filed by Antofagasta plc (LSE) on ASXmoderateAntofagasta plc Annual Report 2024 (Ore Reserves & Mineral Resources statement)
Australia / Asia-Pacific (ASX) · expected language: Ore Reserves / Mineral Resources
Processing and metallurgyflotation
- Process route
- flotation
- Reported recovery
- not stated
- Ore character described in the filing
- none of that family used
- Deleterious elements named
- none stated
Milling and flotation producing copper concentrate (containing gold and silver) plus molybdenum concentrate. Copper recovery % not captured in this pass.
Antofagasta plc AR 2024- Process route
- flotation
- Reported recovery
- not stated
- Ore character described in the filing
- none of that family used
- Deleterious elements named
- none stated
Processing method: Open-pit; concentrator (milling + flotation) at ~190 ktpd after the Phase 1 expansion (desalination plant 400 l/s). Copper and molybdenum concentrates.
Antofagasta plc AR 2024 / Mining-TechnologyWhat was sought and not found5 points stated plainly
- PRIORITY: reserve/resource tonnes and grades not reliably sourced — pull the JORC table from the Antofagasta plc Annual Report 2024. This is why coverage is 'partial'.
- Copper/moly recovery % not captured.
- Mine life stated ~10 years with an EIA submitted to extend operations toward 2051 — confirm current status.
- Figures machine-extracted, not hand-verified.
- Figures are machine-extracted from the cited filings and not yet independently verified by a qualified person (verification_status = machine_extracted_unreviewed). Confirm against the cited filing before external use.
Assessment
Los Pelambres is a producing porphyry Cu-Mo operation that in 2024 produced 319,600 t copper, 8,400 t molybdenum and 46,600 oz gold (100% basis), with gold and silver carried in the copper concentrate. Public resource and production reporting characterises grade and output; it is not designed to resolve element deportment by mineral phase, nor where molybdenum, gold and silver report across concentrate, tailings and residue at concentrator scale. Whether recoverable value resists conventional flotation, or reports to tailings, is a testable question that a DETECT characterisation is built to answer. Element deportment by mineral phase is not resolved in the public reporting located, and the figures here are machine-extracted from the cited filings and not yet independently verified.
Screening signals
Each item below is something a cited source states. Nothing here asserts that unrecovered material is present.
The deposit is described as Sulphide porphyry copper-molybdenum. Porphyry systems are documented as commonly carrying molybdenum, gold, silver, rhenium and tellurium as byproduct or unrecovered constituents.
Antofagasta plc AR 2024 / Mining-TechnologyOpen technical questions
Public resource reporting characterises grade and tonnage to a code standard. It is not designed to resolve element deportment by mineral phase. These are the questions this operation’s public reporting was not built to answer.
The resource statement reports contained Copper but no deportment for the molybdenum, gold, silver carried in the concentrate; in which mineral phase that value resides is not resolved by the assays disclosed.
Grounded in: Molybdenum, gold, silver is named as a byproduct or co-product commodity, with no separate grade in the located resource statement. source
The deposit is described as Sulphide porphyry copper-molybdenum; public code-compliant reporting characterises grade and tonnage to a code standard but is not designed to resolve element deportment by mineral phase in this material.
Grounded in: The deposit type is reported as Sulphide porphyry copper-molybdenum. source
How those questions get answered
These are testable questions about element deportment by mineral phase, which code-compliant public reporting is not designed to resolve. A DETECT™ desk study is the instrument built to weigh them: it reads this site's public record alongside any assays, mineralogy and recovery data the holder can supply, and states how likely it is that value sits in a form the current route does not recover. It measures nothing and assumes nothing. Measurement comes later, from a RECOVER™ trial on a representative sample.
Step 2 · how likely is it?
Is the metal at Minera Los Pelambres locked in a form your process cannot see?
The read above screens the public record. It cannot see your rock. A DETECT™ desk study takes what you already hold, your assays, drill data, mineralogy, historical recovery and tailings records, and assesses how likely it is that metal at your site sits in a form conventional processing does not recover.
CHF 5,000
Web-direct rate for one site. Excludes all taxes. No sample required.
- A 25 to 30 page report on one site, built from your own data and the published record for that deposit type.
- Which metals could be held in which host phases, and the evidence for and against it at your site.
- A stated likelihood, in plain words, including an honest “unlikely” where the evidence points that way.
- If it is worth pursuing: exactly what to sample and which tests to run next.
What it does not do is tell you how much you would recover. Nothing on a desk can. That is measured on a real sample in a RECOVER™ trial, and this report tells you whether that trial is worth running.
Book the DETECT™ desk study: CHF 5,000Prefer to be invoiced? Ask for an invoice and we will send one for the same CHF 5,000.
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