Screening read from the public record
How many of the documented conditions for locked metal does Los Bronces (Anglo American Sur S.A.) show?
Moderate
Some documented conditions are present. This is a question worth testing, not a finding. Only a sample result can turn it into an answer.
What drives this read2 sourced factors · same inputs, same score, every time
- +14Deposit type. Described as Porphyry copper-molybdenum; primary chalcopyrite-bornite with an overlying chalcocite (supergene) blanket. Porphyry systems are documented as carrying Mo, Au, Ag, Re and Te as by-product or unrecovered constituents. source
- +8By-product not carried in the resource. Named as by-product or co-product: Molybdenum. The resource statement located carries no grade or contained-metal figure for it. 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
Los Bronces (Anglo American Sur S.A.)
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 ownershipAnglo American (Anglo American Sur S.A.) · Chile · Copper
- Operator
- Anglo American (Anglo American Sur S.A.)highAnglo American ORMR 2023 — as of 2023-12-31
- Jurisdiction
- Chile — Andes near Santiago (Los Bronces, ~3,500 m)highMining-Technology — as of 2023
- Primary commodity
- CopperhighAnglo American ORMR 2023 — as of 2023-12-31
- Deposit type
- Porphyry copper-molybdenum; primary chalcopyrite-bornite with an overlying chalcocite (supergene) blankethighMining-Technology — as of 2023
- First production
- Historic (>150 years); current large-scale expansion from Nov 2011moderateMining-Technology — as of 2011
- Years in operation
- not derivable
Disclosed interests
- Interest 1
- Anglo American plc — 50.1%highAnglo American ORMR 2023 / Mining-Technology — as of 2023-12-31
- Interest 2
- Mitsubishi Corporation — 20.4% (MC slide: 20.44%)highMitsubishi Corporation Mineral Resources Group — Copper Business briefing (13 April 2023) — as of 2023-04-13
- Interest 3
- Codelco–Mitsui JV — 29.5%moderateMining-Technology — as of 2023
Byproduct and co-product commodities
- Byproduct 1
- MolybdenumhighMining-Technology (Cu-Mo concentrates at Las Tortolas) — as of 2023
Reported production1 reported figure
| Metal | Quantity | Basis | Period | Source |
|---|---|---|---|---|
| Copper | 221000 t | total | CY2024 (100% basis (Anglo American Sur)) | Mitsubishi Corporation portfolio slide 3high |
Public technical reportingJORC, 2024
JORC (primary) — Anglo American Ore Reserves and Mineral Resources Report 2023, 2024, filed by Anglo American plc (LSE) on ASXhighAnglo American Ore Reserves and Mineral Resources Report 2023
Australia / Asia-Pacific (ASX) · expected language: Ore Reserves / Mineral Resources
Reported mineral resource and reserveCu
- Resource reported
- Measured+Indicated, Inferred
- Reserve reported
- Proven+Probable
- Grade stated, % Cu
- 0.28 to 0.53, by category
- Cut-off
- not stated
- Effective date
- 2023-12-31
- Resource includes reserve
- not stated
Tonnage, grade and contained metal by category are set out in the filing itself: Anglo American ORMR 2023 (pp.25-27), pp.25-27.
Processing and metallurgyflotation, bio oxidation, SX EW
- Process route
- flotation, bio oxidation, SX EW
- Reported recovery
- not stated
- Ore character described in the filing
- none of that family used
- Deleterious elements named
- none stated
High-grade ore: SAG + two ball mills, 52 km slurry pipeline to Las Tortolas flotation plant producing copper and molybdenum concentrates. Low-grade ore: dump leach + SX-EW to copper cathode. Copper recovery % not stated in the ORMR summary.
Mining-Technology- Process route
- flotation, bio oxidation, SX EW
- Reported recovery
- not stated
- Ore character described in the filing
- none of that family used
- Deleterious elements named
- none stated
Processing method: Open-pit; dual route — flotation (Cu+Mo concentrate at Las Tortolas) for higher-grade ore and dump-leach/SX-EW cathode for low-grade ore.
Mining-TechnologyWhat was sought and not found6 points stated plainly
- Reserve/resource effective date is 31 Dec 2023 — refresh from Anglo American ORMR 2024. Note the 2025 Anglo–Codelco joint Los Bronces/Andina mine-plan announcement may change the picture.
- Molybdenum grades not in the ORMR summary tables.
- Copper recovery % not publicly stated in the summary; a gap, not a hidden number.
- El Soldado and Chagres smelter (also within Anglo American Sur) not profiled here.
- 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
The 2023 JORC statement (effective 31 Dec 2023) reports 1,227.7 Mt of flotation reserve at 0.53% Cu plus 426.3 Mt of dump-leach reserve at 0.28% Cu at this porphyry Cu-Mo operation. The dump-leach stream is, by design, a low-recovery route where a large share of contained copper and any molybdenum or precious-metal association reports to residue. Public resource reporting characterises grade and processing route; it is not designed to resolve element deportment by mineral phase in the low-grade leach and residue streams. Whether recoverable value resists the conventional leach/flotation split 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.
Molybdenum is named as a byproduct or co-product commodity, and the resource statement located carries no grade or contained-metal figure for it.
Mining-Technology (Cu-Mo concentrates at Las Tortolas)The deposit is described as Porphyry copper-molybdenum; primary chalcopyrite-bornite with an overlying chalcocite (supergene) blanket. Porphyry systems are documented as commonly carrying molybdenum, gold, silver, rhenium and tellurium as byproduct or unrecovered constituents.
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 carried in the concentrate; in which mineral phase that value resides is not resolved by the assays disclosed.
Grounded in: Molybdenum is named as a byproduct or co-product commodity, with no separate grade in the located resource statement. source
The deposit is described as 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 Porphyry copper-molybdenum; primary chalcopyrite-bornite with an overlying chalcocite (supergene) blanket. 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 Los Bronces (Anglo American Sur S.A.) 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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