Ivanhoe Mines Increases the Size of Massive Western Forelands' Copper Discovery by 30%
Original announcement by tmx on
- Company
- Ivanhoe Mines
- Ticker
- IVN
- Exchange
- TSX
- Region
- Democratic Republic of the Congo
- Primary commodity
- Copper
- Secondary commodities
- None reported
- Document categories
- Resource update
- Extracted
- 2026-09-14 06:22:02 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Ivanhoe Mines has announced an updated Mineral Resource estimate for the Makoko District in the Western Forelands, DRC, showing a 30% increase in contained copper. The total Western Forelands Indicated Resource now stands at 42 million tonnes at 2.66% copper, with an Inferred Resource of 612 million tonnes at 1.80% copper.
Reasoning: The update shows explosive growth in the Makoko District, with a 30% increase in contained copper and significant expansion of both Indicated and Inferred resources using more constrained MSO methodology.
Positive factors
- Significant tonnage and grade growth
- Contained copper increased by 30%
- Implementation of Mineable Shape Optimisation (MSO) for more realistic reporting
- High-grade Indicated resources (2.66% Cu)
- Large-scale discovery scale
Negative factors
- Large portion of resource remains in Inferred category
Facts used in scoring: 8
Classification and evidence
Tonnage Growthpositive
Tonnage increase reaching the strong tier vs prior estimate, with grade maintained or improved.
Why it applies: Contained copper in the Makoko District increased by 30% compared to the last resource.
Evidence · text
“increased the contained copper by 30%”
Category Upgradepositive
Resource confidence improved — Inferred upgraded to Indicated, or Indicated to Measured. De-risking signal.
Why it applies: The update includes new drilling that has increased the Indicated resource tonnage.
Evidence · text
“added approximately 130,000 tonnes of contained copper in the Indicated Mineral Resource category”
NI 43-101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: The resource was prepared in accordance with CIM 2014 standards and reviewed by a Qualified Person under NI 43-101.
Evidence · text
“prepared by Ivanhoe Mines in accordance with the CIM 2014 Definition Standards”
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: Simon Bottoms is named as the Qualified Person for the estimate.
Evidence · text
“Mr. Bottoms is the Qualified Person for the estimate”
Cut-off Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: The 1% copper cut-off is explicitly stated for the Makoko District resources.
Evidence · text
“optimized at a 1% copper cut-off”
Extracted facts
Stored fact records: 8. Some facts used in scoring do not have a stored record.
Resource Estimates (8)
indicatedWestern Forelands · copperTonnes: 20000000Grade: 2.87Grade Unit: %Contained Metal: 574000Contained Unit: k tonnesView all detailsHide details
Identity
- Project
- Western Forelands
- Commodity
- copper
- Region
- democratic republic of the congo
- Reported Region
- Democratic Republic of the Congo
- Ticker
- IVN
Resource scope
- Estimate type
- resource
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Simon Bottoms
- Resource group id
- resource:3706e26385e5c5e0002a
- Deposit or zone
- Makoko
- Mining method
- combined
- Resource basis
- gross
Resource Data
- Category
- indicated
- Tonnes
- 20000000
- Grade
- 2.87
- Grade Unit
- %
- Contained Metal
- 574000
- Contained Unit
- k tonnes
- Cutoff Grade
- 1
- Cutoff Unit
- %
Prior Estimate
- Resource Date
- 2026-03-31
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-08T00:00:00.000Z
Reasoning: Strong grade of 2.87% Cu in the Indicated category for the Makoko deposit.
Positive factors
- High grade for indicated category
Evidence · table
“2.87%”
Context: 20
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 Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is 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
PFS-Supportingneutral
Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component.
Why it applies: the release names the study this estimate supports
DFS-Supportingneutral
Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.
Why it applies: the release names the study this estimate supports
inferredWestern Forelands · copperTonnes: 335000000Grade: 1.57Grade Unit: %Contained Metal: 5260000Contained Unit: k tonnesView all detailsHide details
Identity
- Project
- Western Forelands
- Commodity
- copper
- Region
- democratic republic of the congo
- Reported Region
- Democratic Republic of the Congo
- Ticker
- IVN
Resource scope
- Estimate type
- resource
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Simon Bottoms
- Resource group id
- resource:66b549d5b8d2883f6784
- Deposit or zone
- Makoko
- Mining method
- combined
- Resource basis
- gross
Resource Data
- Category
- inferred
- Tonnes
- 335000000
- Grade
- 1.57
- Grade Unit
- %
- Contained Metal
- 5260000
- Contained Unit
- k tonnes
- Cutoff Grade
- 1
- Cutoff Unit
- %
Prior Estimate
- Resource Date
- 2026-03-31
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-08T00:00:00.000Z
Reasoning: Very large tonnage in the Inferred category, providing significant scale but lower geological confidence.
Positive factors
- Massive tonnage
Negative factors
- Inferred category risk
Evidence · table
“1.57%”
Context: 335
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 Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is 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
PFS-Supportingneutral
Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component.
Why it applies: the release names the study this estimate supports
DFS-Supportingneutral
Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.
Why it applies: the release names the study this estimate supports
indicatedWestern Forelands · copperTonnes: 14000000Grade: 2.36Grade Unit: %Contained Metal: 330000Contained Unit: k tonnesView all detailsHide details
Identity
- Project
- Western Forelands
- Commodity
- copper
- Region
- democratic republic of the congo
- Reported Region
- Democratic Republic of the Congo
- Ticker
- IVN
Resource scope
- Estimate type
- resource
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Simon Bottoms
- Resource group id
- resource:b4c713c12291b8efa908
- Deposit or zone
- Makoko West
- Mining method
- combined
- Resource basis
- gross
Resource Data
- Category
- indicated
- Tonnes
- 14000000
- Grade
- 2.36
- Grade Unit
- %
- Contained Metal
- 330000
- Contained Unit
- k tonnes
- Cutoff Grade
- 1
- Cutoff Unit
- %
Prior Estimate
- Resource Date
- 2026-03-31
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-08T00:00:00.000Z
Reasoning: Indicated resource for Makoko West.
Positive factors
- Solid grade
Evidence · table
“2.36%”
Context: 14
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 Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is 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
PFS-Supportingneutral
Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component.
Why it applies: the release names the study this estimate supports
DFS-Supportingneutral
Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.
Why it applies: the release names the study this estimate supports
inferredWestern Forelands · copperTonnes: 136000000Grade: 1.9Grade Unit: %Contained Metal: 2584000Contained Unit: k tonnesView all detailsHide details
Identity
- Project
- Western Forelands
- Commodity
- copper
- Region
- democratic republic of the congo
- Reported Region
- Democratic Republic of the Congo
- Ticker
- IVN
Resource scope
- Estimate type
- resource
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Simon Bottoms
- Resource group id
- resource:a8877b4b1a43bfdd5366
- Deposit or zone
- Makoko West
- Mining method
- combined
- Resource basis
- gross
Resource Data
- Category
- inferred
- Tonnes
- 136000000
- Grade
- 1.9
- Grade Unit
- %
- Contained Metal
- 2584000
- Contained Unit
- k tonnes
- Cutoff Grade
- 1
- Cutoff Unit
- %
Prior Estimate
- Resource Date
- 2026-03-31
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-08T00:00:00.000Z
Reasoning: Inferred resource for Makoko West.
Positive factors
- Significant tonnage
Negative factors
- Inferred category
Evidence · table
“1.90%”
Context: 136
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 Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is 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
PFS-Supportingneutral
Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component.
Why it applies: the release names the study this estimate supports
DFS-Supportingneutral
Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.
Why it applies: the release names the study this estimate supports
inferredWestern Forelands · copperTonnes: 141000000Grade: 2.25Grade Unit: %Contained Metal: 3173000Contained Unit: k tonnesView all detailsHide details
Identity
- Project
- Western Forelands
- Commodity
- copper
- Region
- democratic republic of the congo
- Reported Region
- Democratic Republic of the Congo
- Ticker
- IVN
Resource scope
- Estimate type
- resource
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Simon Bottoms
- Resource group id
- resource:258e5e1701e81c9de556
- Deposit or zone
- Kitoko
- Mining method
- combined
- Resource basis
- gross
Resource Data
- Category
- inferred
- Tonnes
- 141000000
- Grade
- 2.25
- Grade Unit
- %
- Contained Metal
- 3173000
- Contained Unit
- k tonnes
- Cutoff Grade
- 1
- Cutoff Unit
- %
Prior Estimate
- Resource Date
- 2026-03-31
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-08T00:00:00.000Z
Reasoning: Inferred resource for Kitoko.
Positive factors
- High grade for inferred
Negative factors
- Inferred category
Evidence · table
“2.25%”
Context: 141
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 Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is 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
PFS-Supportingneutral
Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component.
Why it applies: the release names the study this estimate supports
DFS-Supportingneutral
Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.
Why it applies: the release names the study this estimate supports
indicatedWestern Forelands · copperTonnes: 8000000Grade: 2.67Grade Unit: %Contained Metal: 212000Contained Unit: k tonnesView all detailsHide details
Identity
- Project
- Western Forelands
- Commodity
- copper
- Region
- democratic republic of the congo
- Reported Region
- Democratic Republic of the Congo
- Ticker
- IVN
Resource scope
- Estimate type
- resource
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Simon Bottoms
- Resource group id
- resource:8866c7ea651266a1af82
- Deposit or zone
- Kiala
- Mining method
- combined
- Resource basis
- gross
Resource Data
- Category
- indicated
- Tonnes
- 8000000
- Grade
- 2.67
- Grade Unit
- %
- Contained Metal
- 212000
- Contained Unit
- k tonnes
- Cutoff Grade
- 1
- Cutoff Unit
- %
Prior Estimate
- Resource Date
- 2026-03-31
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-08T00:00:00.000Z
Reasoning: Indicated resource for Kiala, noted as unchanged.
Positive factors
- High grade
Evidence · table
“2.67”
Context: 8
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 Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is 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
PFS-Supportingneutral
Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component.
Why it applies: the release names the study this estimate supports
DFS-Supportingneutral
Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.
Why it applies: the release names the study this estimate supports
indicatedWestern Forelands · copperTonnes: 42000000Grade: 2.66Grade Unit: %Contained Metal: 1116000Contained Unit: k tonnesView all detailsHide details
Identity
- Project
- Western Forelands
- Commodity
- copper
- Region
- democratic republic of the congo
- Reported Region
- Democratic Republic of the Congo
- Ticker
- IVN
Resource scope
- Estimate type
- resource
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Simon Bottoms
- Resource group id
- resource:79612e3156a0fc114d20
- Deposit or zone
- Total Western Forelands
- Mining method
- combined
- Resource basis
- gross
Resource Data
- Category
- indicated
- Tonnes
- 42000000
- Grade
- 2.66
- Grade Unit
- %
- Contained Metal
- 1116000
- Contained Unit
- k tonnes
- Cutoff Grade
- 1
- Cutoff Unit
- %
Prior Estimate
- Resource Date
- 2026-03-31
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-08T00:00:00.000Z
Reasoning: Total Indicated resource for the Western Forelands project.
Positive factors
- Significant growth in Indicated category
- High grade
Evidence · table
“2.66%”
Context: 42
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 Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is 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
PFS-Supportingneutral
Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component.
Why it applies: the release names the study this estimate supports
DFS-Supportingneutral
Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.
Why it applies: the release names the study this estimate supports
inferredWestern Forelands · copperTonnes: 612000000Grade: 1.8Grade Unit: %Contained Metal: 11016000Contained Unit: k tonnesView all detailsHide details
Identity
- Project
- Western Forelands
- Commodity
- copper
- Region
- democratic republic of the congo
- Reported Region
- Democratic Republic of the Congo
- Ticker
- IVN
Resource scope
- Estimate type
- resource
- Reporting standards
- ni_43_101
- QP Signed
- Yes
- Qualified person names
- Simon Bottoms
- Resource group id
- resource:4c9e34cc16f2b171c43e
- Deposit or zone
- Total Western Forelands
- Mining method
- combined
- Resource basis
- gross
Resource Data
- Category
- inferred
- Tonnes
- 612000000
- Grade
- 1.8
- Grade Unit
- %
- Contained Metal
- 11016000
- Contained Unit
- k tonnes
- Cutoff Grade
- 1
- Cutoff Unit
- %
Prior Estimate
- Resource Date
- 2026-03-31
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-08T00:00:00.000Z
Reasoning: Total Inferred resource for the Western Forelands project.
Positive factors
- Massive scale
Negative factors
- Inferred category
Evidence · table
“1.80%”
Context: 612
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 Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is 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
PFS-Supportingneutral
Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component.
Why it applies: the release names the study this estimate supports
DFS-Supportingneutral
Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence.
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.