Lion Copper and Gold Corp. Announces Positive Pea Results for Its Yerington, Nevada Copper Project That Includes the Use of Rio Tinto's Nuton Technologies
Original announcement by tmx on
- Company
- Lion Copper and Gold Corp.
- Ticker
- LEO
- Exchange
- TSX
- Region
- Nevada
- Primary commodity
- Copper
- Secondary commodities
- None reported
- Document categories
- Other, Resource update, Metallurgy
- Extracted
- 2026-08-25 19:16:32 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Lion Copper and Gold Corp. announced positive Preliminary Economic Assessment (PEA) results for its Yerington Copper Project in Nevada, showing a post-tax NPV7% of $356 million and an IRR of 17.4% at a copper price of $3.85/lb. The PEA envisions a 12-year open pit mine life utilizing Rio Tinto's Nuton technologies for heap leaching of both oxide and primary sulfide materials, achieving projected recoveries of up to 82% for oxide and 74% for sulfide, while negating the need for a concentrator or tailings impoundment. The study integrates updated mineral resource estimates for the Yerington Deposit, W-3 Stockpile, and Vat Leach Tailings, alongside a restated 2022 estimate for the MacArthur Deposit.
Reasoning: The Preliminary Economic Assessment (PEA) for the Yerington Copper Project demonstrates positive economics, leveraging innovative Nuton technologies for enhanced copper recovery from sulfide materials and eliminating traditional processing infrastructure. While the PEA is preliminary and includes inferred resources, the overall outlook is strong, supported by updated resource estimates and QP sign-off. However, the MacArthur resource estimate is stale, and the novelty of the processing technology introduces some uncertainty.
Positive factors
- Positive PEA economics (NPV, IRR)
- Utilization of innovative Nuton technologies for sulfide processing
- Elimination of concentrator, tailings impoundment, and smelter operations
- High projected copper recoveries for both oxide and sulfide materials
- Low overall open pit strip ratio
- NI 43-101 compliant PEA with QP sign-off
- Updated resource estimates for Yerington Deposit, W-3 Stockpile, and VLT
Negative factors
- PEA is preliminary in nature and includes inferred mineral resources
- MacArthur Deposit resource estimate is stale (effective date Feb 2022)
- Novel processing technology may carry inherent risks
Low confidence — this extraction should be reviewed alongside the original source.
Facts used in scoring: 53
Classification and evidence
PEA-Supportingneutral
Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.
Why it applies: The document announces the results of a Preliminary Economic Assessment (PEA) for the Yerington Copper Project.
Evidence · text
“Lion Copper and Gold Corp. Announces Positive Pea Results for Its Yerington, Nevada Copper Project”
NI 43-101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: The PEA was prepared in accordance with the requirements set forth by Canadian National Instrument 43-101.
Evidence · text
“A technical report on the PEA, prepared in accordance with the requirements set forth by Canadian National Instrument 43-101 (" NI 43-101 ")”
QP/CP Signedpositive
Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience.
Why it applies: Multiple Qualified Persons (QPs) are listed as responsible for the preparation of the PEA Technical Report and have reviewed and approved the content.
Evidence · text
“The Qualified Persons (QPs), as that term is defined in NI 43-101, responsible for the preparation of the PEA Technical Report, include: Gordon Zurowski, P.Eng., Principal Mine Engineer (AGP Mining Consultants Inc.) Tim Maunula, P.Geo, Principal Resource Geologist (T. Maunula & Associates Consulting Inc.) - Yerington Mineral Resource estimate Herb Welhener, MMSA-QPM, Vice President (Independent Mining Consultants, Inc.) - MacArthur Mineral Resource estimate Adrien Butler, P.E., Senior Civil Engineer (NewFields) Jeff Woods, QP, Principal Process Engineer (Woods Process Services, LLC)”
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: The PEA is preliminary in nature and includes inferred mineral resources that are considered too speculative geologically to have the economic considerations applied to them that would enable them to be categorized as mineral reserves.
Evidence · text
“The PEA is preliminary in nature, includes inferred mineral resources that are considered too speculative geologically to have the economic considerations applied to them that would enable them to be categorized as mineral reserves”
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: The document provides updated Mineral Resource estimates for the Yerington Deposit, W-3 Stockpile, and Vat Leach Tailings, and restates the MacArthur Deposit estimate.
Evidence · text
“The updated Mineral Resources for the Yerington Deposit are: Measured Resources of 62.9 Mtons at 0.30% TCu; Indicated Resources of 94.7 Mtons at 0.27% TCu; and Inferred Resources of 113.2 Mtons at 0.22% TCu (Table 6).”
Stale Estimatenegative
Effective date is >2 years old — data currency concern, may not reflect current geological understanding.
Why it applies: The effective date of the MacArthur Mineral Resource estimate is February 25, 2022, which is nearly two years prior to the announcement date.
Evidence · text
“The effective date of the MacArthur Mineral Resource estimate is February 25, 2022.”
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: The Nuton technologies demonstrate a projected copper recovery rate of over 74% for Yerington primary sulfide rock types, which is strong for a heap leach process, and MacArthur Oxide shows 82% recovery.
Evidence · text
“demonstrating recoveries that reach a projected copper recovery rate of over 74%.”
Novel Processingneutral · Story-specific tag
No canonical definition is currently available.
Why it applies: The project utilizes Rio Tinto's innovative Nuton technologies, described as a proprietary catalytic bio-heap leaching innovation for primary sulfide copper resources.
Evidence · text
“The heart of our Project lies in the utilization of Rio Tinto's innovative Nuton technologies - a proprietary catalytic bio-heap leaching innovation.”
Heap Leach Routeneutral
Processing via heap leach — lower CAPEX and OPEX, lower recovery expected.
Why it applies: The PEA envisions an open pit mining strategy followed by a heap leach operation.
Evidence · text
“The PEA envisions an open pit mining strategy followed by a heap leach operation”
Open Pit Miningneutral · Story-specific tag
No canonical definition is currently available.
Why it applies: The PEA envisions an open pit mining strategy.
Evidence · text
“The PEA envisions an open pit mining strategy”
Extracted facts
Stored fact records: 0. Some facts used in scoring do not have a stored record.
No stored fact records are available for this extraction.
How Atlas produces this analysis
Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.