Lithium Argentina Announces Cauchari-Olaroz Stage 2 Scoping Study Results and Acceleration of Initial Phase of 10,000 tpa
Original announcement by globenewswire on
- Company
- Lithium Argentina AG
- Ticker
- LAR
- Exchange
- Unavailable
- Region
- Jujuy Province, Argentina
- Primary commodity
- Lithium
- Secondary commodities
- None reported
- Document categories
- Resource update, Other
- Extracted
- 2026-09-30 20:33:05 UTC
Analysis by Minestarters Atlas
Atlas analysis published:
Minestarters Atlas analysis
Summary
Lithium Argentina announced positive Scoping Study results for its Cauchari-Olaroz Stage 2 Expansion Project in Argentina, projecting an after-tax NPV of $3.1 billion and an IRR of 28.5% for an additional 45,000 tpa LCE production. The company is accelerating an initial 10,000 tpa phase using DLE technology, targeting online production by 2028, and reported a 42% increase in Measured and Indicated LCE resources compared to 2019. The project benefits from RIGI approval and leverages existing infrastructure.
Reasoning: The Scoping Study for the Cauchari-Olaroz Stage 2 Expansion Project demonstrates compelling economics with a high NPV and IRR, supported by a significant increase in lithium production capacity and a long project life. The company is also accelerating an initial phase of the expansion, leveraging existing infrastructure and benefiting from RIGI approval, although some regulatory approvals are still pending. The updated resource shows a substantial increase in M&I LCE.
Positive factors
- Compelling economics (NPV $3.1B, IRR 28.5%)
- Significant production capacity increase (45,000 tpa LCE expansion to 85,000 tpa total)
- Long project life (40 years)
- Competitive operating costs ($5,006/t LCE)
- RIGI approval (fiscal stability, investment incentives)
- Accelerated initial phase (10,000 tpa LCE by 2028)
- Leveraging existing infrastructure (brownfield synergies)
- Resource update shows 42% increase in M&I LCE
Negative factors
- Scoping Study level (inherent uncertainty, +/- 30-50% accuracy)
- Regulatory approvals pending for DLE technology export from China
- Initial phase economics not reflected in Scoping Study
- No cut-off grade disclosed for resource estimate
- Direct Lithium Extraction (DLE) technology is relatively novel for commercial-scale lithium production
Low confidence — this extraction should be reviewed alongside the original source.
Facts used in scoring: 7
Classification and evidence
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: The document provides an updated mineral resource estimate for the Cauchari-Olaroz project, with an effective date of January 1, 2026.
Evidence · text
“The January 2026 resource update supports Cauchari-Olaroz’ large-scale and high-quality lithium brine Deposit.”
Category Upgradepositive
Resource confidence improved — Inferred upgraded to Indicated, or Indicated to Measured. De-risking signal.
Why it applies: Total Measured and Indicated LCE resources increased by 42% compared to the 2019 estimate, reflecting improved geological understanding and confidence.
Evidence · text
“Total M&I resources increased LCE estimates by 42% compared to the 2019 estimate”
Tonnage Growthpositive
Significant tonnage increase (≥15%) vs prior estimate with grade maintained or improved.
Why it applies: Total Measured and Indicated LCE resources increased by 42% compared to the 2019 estimate, indicating significant growth in the resource base.
Evidence · text
“Total M&I resources increased LCE estimates by 42% compared to the 2019 estimate”
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: The mineral resource estimate was prepared by Mark King, PhD PGeo., FGC, who is identified as a 'qualified person' as defined in NI 43-101.
Evidence · text
“The qualified person for the Mineral Resource Estimate is Mark King, PhD PGeo., FGC, a “qualified person” as defined in National Instrument 43-101”
NI 43-101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: The technical report for the Scoping Study, which includes the resource estimate, is prepared in accordance with National Instrument 43-101 Standards of Disclosure for Mineral Projects.
Evidence · text
“A technical report, prepared by Golder Associates (“ Golder ”), in accordance with National Instrument 43-101 Standards of Disclosure for Mineral Projects (“ NI 43-101 ”)”
SEC S-K 1300 Compliantpositive · Story-specific tag
No canonical definition is currently available.
Why it applies: The technical report for the Scoping Study, which includes the resource estimate, is prepared in accordance with Subpart 1300 of Regulation S-K.
Evidence · text
“and Subpart 1300 of Regulation S-K (“ S-K 1300 ”)”
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: The document explicitly states that no cut-off values have been applied to the resource estimate, which limits comparability and economic assessment.
Evidence · text
“No cut-off values have been applied to the resource estimate.”
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: The resource estimate includes a significant Inferred component of 9.6 Mt LCE, which is a speculative category with lower geological confidence.
Evidence · table
“Inferred”
Context: 9.6
Novel Processingnegative · Story-specific tag
No canonical definition is currently available.
Why it applies: The project utilizes Direct Lithium Extraction (DLE) technology, with the company stating a need to 'further demonstrate adsorption DLE performance on a commercial scale' and that expansion is 'contingent on further technical work, including demonstrating water consumption performance on a commercial scale', indicating it is still unproven at full commercial scale.
Evidence · text
“further demonstrate adsorption DLE performance on a commercial scale”
Extracted facts
Stored fact records: 7. Some facts used in scoring do not have a stored record.
Resource Estimates (7)
measuredCauchari-Olaroz · lithiumContained Metal: 16.8Contained Unit: mtView all detailsHide details
Identity
- Project
- Cauchari-Olaroz
- Commodity
- lithium
- Region
- argentina
- Reported Region
- Jujuy Province, Argentina
- Ticker
- LAR
Resource scope
- Estimate type
- resource
- Effective date
- 2026-01-01T00:00:00.000Z
- Reporting standards
- ni_43_101, sec_sk1300
- QP Signed
- Yes
- Qualified person names
- Mark King, PhD PGeo., FGC
- Resource group id
- resource:cc87bd7002a0c25f190c
- Deposit or zone
- Cauchari-Olaroz
Resource Data
- Category
- measured
- Contained Metal
- 16.8
- Contained Unit
- mt
Prior Estimate
- Resource Date
- 2026-01-01
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-30T00:00:00.000Z
Reasoning: The Measured resource contains a significant 16.8 Mt of lithium carbonate equivalent, indicating a substantial high-confidence resource.
Positive factors
- High confidence Measured category
- Significant contained lithium carbonate equivalent
Negative factors
- No cut-off grade disclosed
Evidence · table
“16.8”
Context: 557
Tags used in scoring
Measured Resourcepositive
Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves.
Why it applies: category is "measured"
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
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: qp_signed is true
NI 43-101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: reporting_standards includes ni_43_101
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: the release compares against a previous estimate
PEA-Supportingneutral
Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.
Why it applies: the release names the study this estimate supports
indicatedCauchari-Olaroz · lithiumContained Metal: 11.3Contained Unit: mtView all detailsHide details
Identity
- Project
- Cauchari-Olaroz
- Commodity
- lithium
- Region
- argentina
- Reported Region
- Jujuy Province, Argentina
- Ticker
- LAR
Resource scope
- Estimate type
- resource
- Effective date
- 2026-01-01T00:00:00.000Z
- Reporting standards
- ni_43_101, sec_sk1300
- QP Signed
- Yes
- Qualified person names
- Mark King, PhD PGeo., FGC
- Resource group id
- resource:89b86a50029640aaebae
- Deposit or zone
- Cauchari-Olaroz
Resource Data
- Category
- indicated
- Contained Metal
- 11.3
- Contained Unit
- mt
Prior Estimate
- Resource Date
- 2026-01-01
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-30T00:00:00.000Z
Reasoning: The Indicated resource contains a significant 11.3 Mt of lithium carbonate equivalent, adding to the project's scale.
Positive factors
- Indicated category provides good geological confidence
- Significant contained lithium carbonate equivalent
Negative factors
- No cut-off grade disclosed
Evidence · table
“11.3”
Context: 571
Tags used in scoring
Indicated Resourcepositive
Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.
Why it applies: category is "indicated"
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
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: qp_signed is true
NI 43-101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: reporting_standards includes ni_43_101
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: the release compares against a previous estimate
PEA-Supportingneutral
Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.
Why it applies: the release names the study this estimate supports
inferredCauchari-Olaroz · lithiumContained Metal: 9.6Contained Unit: mtView all detailsHide details
Identity
- Project
- Cauchari-Olaroz
- Commodity
- lithium
- Region
- argentina
- Reported Region
- Jujuy Province, Argentina
- Ticker
- LAR
Resource scope
- Estimate type
- resource
- Effective date
- 2026-01-01T00:00:00.000Z
- Reporting standards
- ni_43_101, sec_sk1300
- QP Signed
- Yes
- Qualified person names
- Mark King, PhD PGeo., FGC
- Resource group id
- resource:ebd65eab6750949283be
- Deposit or zone
- Cauchari-Olaroz
Resource Data
- Category
- inferred
- Contained Metal
- 9.6
- Contained Unit
- mt
Prior Estimate
- Resource Date
- 2026-01-01
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-30T00:00:00.000Z
Reasoning: The Inferred resource contains 9.6 Mt of lithium carbonate equivalent, indicating further upside potential for the project.
Positive factors
- Significant contained lithium carbonate equivalent
Negative factors
- Inferred category has lower geological confidence
- No cut-off grade disclosed
Evidence · table
“9.6”
Context: 567
Tags used in scoring
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: category is "inferred"
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
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: qp_signed is true
NI 43-101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: reporting_standards includes ni_43_101
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: the release compares against a previous estimate
PEA-Supportingneutral
Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.
Why it applies: the release names the study this estimate supports
measuredCauchari-Olaroz · lithiumTonnes: 16800000Grade: 557Grade Unit: mg/lView all detailsHide details
Identity
- Project
- Cauchari-Olaroz
- Commodity
- lithium
- Region
- argentina
- Reported Region
- Jujuy Province, Argentina
- Ticker
- LAR
Resource scope
- Estimate type
- resource
- Effective date
- 2026-01-01T00:00:00.000Z
- Reporting standards
- ni_43_101, sec_sk1300
- QP Signed
- Yes
- Qualified person names
- Mark King, PhD PGeo., FGC
- Resource group id
- resource:96efbfde9fefdfa6a753
- Deposit or zone
- Cauchari-Olaroz
Resource Data
- Category
- measured
- Tonnes
- 16800000
- Grade
- 557
- Grade Unit
- mg/l
Prior Estimate
- Resource Date
- 2026-01-01
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-30T00:00:00.000Z
Reasoning: The Measured resource shows a good lithium grade of 557 mg/L, providing high confidence for the project. (Expanded from multi-commodity resource table for completeness.)
Positive factors
- High confidence Measured category
- Good lithium grade
Negative factors
- No cut-off grade disclosed
Evidence · table
“557”
Context: 16.8
Tags used in scoring
Measured Resourcepositive
Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves.
Why it applies: category is "measured"
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
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: qp_signed is true
NI 43-101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: reporting_standards includes ni_43_101
No Contained Metalnegative
Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.
Why it applies: contained_metal was not reported
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: the release compares against a previous estimate
PEA-Supportingneutral
Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.
Why it applies: the release names the study this estimate supports
indicatedCauchari-Olaroz · lithiumTonnes: 11300000Grade: 571Grade Unit: mg/lView all detailsHide details
Identity
- Project
- Cauchari-Olaroz
- Commodity
- lithium
- Region
- argentina
- Reported Region
- Jujuy Province, Argentina
- Ticker
- LAR
Resource scope
- Estimate type
- resource
- Effective date
- 2026-01-01T00:00:00.000Z
- Reporting standards
- ni_43_101, sec_sk1300
- QP Signed
- Yes
- Qualified person names
- Mark King, PhD PGeo., FGC
- Resource group id
- resource:49e8f96017d1b394dead
- Deposit or zone
- Cauchari-Olaroz
Resource Data
- Category
- indicated
- Tonnes
- 11300000
- Grade
- 571
- Grade Unit
- mg/l
Prior Estimate
- Resource Date
- 2026-01-01
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-30T00:00:00.000Z
Reasoning: The Indicated resource shows a good lithium grade of 571 mg/L, contributing to the overall resource base with good confidence. (Expanded from multi-commodity resource table for completeness.)
Positive factors
- Indicated category provides good geological confidence
- Good lithium grade
Negative factors
- No cut-off grade disclosed
Evidence · table
“571”
Context: 11.3
Tags used in scoring
Indicated Resourcepositive
Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.
Why it applies: category is "indicated"
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
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: qp_signed is true
NI 43-101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: reporting_standards includes ni_43_101
No Contained Metalnegative
Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.
Why it applies: contained_metal was not reported
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: the release compares against a previous estimate
PEA-Supportingneutral
Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.
Why it applies: the release names the study this estimate supports
indicatedCauchari-Olaroz · lithiumTonnes: 28100000Grade: 562Grade Unit: mg/lView all detailsHide details
Identity
- Project
- Cauchari-Olaroz
- Commodity
- lithium
- Region
- argentina
- Reported Region
- Jujuy Province, Argentina
- Ticker
- LAR
Resource scope
- Estimate type
- resource
- Effective date
- 2026-01-01T00:00:00.000Z
- Reporting standards
- ni_43_101, sec_sk1300
- QP Signed
- Yes
- Qualified person names
- Mark King, PhD PGeo., FGC
- Resource group id
- resource:6a921561052f3e3e69d2
Resource Data
- Category
- indicated
- Tonnes
- 28100000
- Grade
- 562
- Grade Unit
- mg/l
Prior Estimate
- Resource Date
- 2026-01-01
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-30T00:00:00.000Z
Reasoning: The Indicated resource shows a good lithium grade of 571 mg/L, contributing to the overall resource base with good confidence. (Expanded from multi-commodity resource table for completeness.)
Positive factors
- Indicated category provides good geological confidence
- Good lithium grade
Negative factors
- No cut-off grade disclosed
Evidence · table
“562”
Context: 28.1
Tags used in scoring
Indicated Resourcepositive
Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.
Why it applies: category is "indicated"
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
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: qp_signed is true
NI 43-101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: reporting_standards includes ni_43_101
No Contained Metalnegative
Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.
Why it applies: contained_metal was not reported
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: the release compares against a previous estimate
PEA-Supportingneutral
Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.
Why it applies: the release names the study this estimate supports
inferredCauchari-Olaroz · lithiumTonnes: 9600000Grade: 567Grade Unit: mg/lView all detailsHide details
Identity
- Project
- Cauchari-Olaroz
- Commodity
- lithium
- Region
- argentina
- Reported Region
- Jujuy Province, Argentina
- Ticker
- LAR
Resource scope
- Estimate type
- resource
- Effective date
- 2026-01-01T00:00:00.000Z
- Reporting standards
- ni_43_101, sec_sk1300
- QP Signed
- Yes
- Qualified person names
- Mark King, PhD PGeo., FGC
- Resource group id
- resource:7970f582ad7dc689235b
- Deposit or zone
- Cauchari-Olaroz
Resource Data
- Category
- inferred
- Tonnes
- 9600000
- Grade
- 567
- Grade Unit
- mg/l
Prior Estimate
- Resource Date
- 2026-01-01
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-30T00:00:00.000Z
Reasoning: The Inferred resource shows a good lithium grade of 567 mg/L, representing potential for future conversion to higher confidence categories. (Expanded from multi-commodity resource table for completeness.)
Positive factors
- Good lithium grade
Negative factors
- Inferred category has lower geological confidence
- No cut-off grade disclosed
Evidence · table
“567”
Context: 9.6
Tags used in scoring
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: category is "inferred"
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
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: qp_signed is true
NI 43-101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: reporting_standards includes ni_43_101
No Contained Metalnegative
Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting.
Why it applies: contained_metal was not reported
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: the release compares against a previous estimate
PEA-Supportingneutral
Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study.
Why it applies: the release names the study this estimate supports
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.