Tungsten surge transforms Northcliff’s Sisson economics
Original announcement by canadianminingjournal on
- Company
- Northcliff Resources Ltd
- Ticker
- NCF
- Exchange
- Unavailable
- Region
- New Brunswick
- Primary commodity
- Tungsten
- Secondary commodities
- Molybdenum
- Document categories
- Resource update, Other
- Extracted
- 2026-09-12 01:12:59 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Northcliff Resources has released a new feasibility study for the Sisson tungsten-molybdenum project in New Brunswick, reporting a post-tax NPV of $6.9 billion. The study highlights significantly improved economics compared to a 2013 study, driven by higher tungsten prices and a revised mine plan.
Reasoning: The new feasibility study shows a massive improvement in project economics (NPV and IRR) driven by higher tungsten prices, despite increased capital costs.
Positive factors
- Significant NPV increase vs 2013 study
- Strong IRR of 50%
- Large reserve tonnage and grade
- Strategic importance for domestic tungsten supply
Negative factors
- Increased initial capital due to inflation and taxes
- Production timeline delayed compared to previous guidance
Facts used in scoring: 8
Classification and evidence
Resource Updateneutral
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: The document presents a new feasibility study with updated resource and reserve estimates.
Evidence · text
“new feasibility study for the Sisson tungsten-molybdenum project”
Tonnage Growthpositive
Tonnage increase reaching the strong tier vs prior estimate, with grade maintained or improved.
Why it applies: The new study provides significantly larger reserve and resource figures compared to the 2013 study context.
Evidence · text
“Proven reserves total 85.6 million tonnes... Probable reserves add 191.2 million tonnes”
Extracted facts
Stored fact records: 8. Some facts used in scoring do not have a stored record.
Resource Estimates (8)
provenSisson · tungstenTonnes: 85600000Grade: 0.079Grade Unit: % tungsten trioxideContained Metal: 6.8Contained Unit: mtuView all detailsHide details
Identity
- Project
- Sisson
- Commodity
- tungsten
- Region
- canada_nb
- Reported Region
- New Brunswick
- Ticker
- NCF
Resource scope
- Estimate type
- reserve
- Resource group id
- resource:436d1fc148ce5ceb56e2
- Deposit or zone
- Sisson
- Mining method
- open_pit
Resource Data
- Category
- proven
- Tonnes
- 85600000
- Grade
- 0.079
- Grade Unit
- % tungsten trioxide
- Contained Metal
- 6.8
- Contained Unit
- mtu
Prior Estimate
- Resource Date
- 2026-08-11
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-02T00:00:00.000Z
Reasoning: High-confidence proven reserve reported in new feasibility study.
Positive factors
- Strong reserve grade
Evidence · text
“Proven reserves total 85.6 million tonnes grading 0.079% tungsten trioxide”
Tags used in scoring
Proven Reservepositive
Measured Resource with demonstrated economic viability after applying modifying factors.
Why it applies: category is "proven"
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
No QP/CP Disclosurenegative
No Qualified Person or Competent Person named — lower credibility for the estimate. A QP/CP should be a member of a recognized professional association with relevant experience.
Why it applies: no Qualified or Competent Person is named anywhere in the release
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
provenSisson · molybdenumTonnes: 85600000Grade: 0.025Grade Unit: % molybdenumContained Metal: 47.8Contained Unit: million lb.View all detailsHide details
Identity
- Project
- Sisson
- Commodity
- molybdenum
- Region
- canada_nb
- Reported Region
- New Brunswick
- Ticker
- NCF
Resource scope
- Estimate type
- reserve
- Resource group id
- resource:436d1fc148ce5ceb56e2
- Deposit or zone
- Sisson
- Mining method
- open_pit
Resource Data
- Category
- proven
- Tonnes
- 85600000
- Grade
- 0.025
- Grade Unit
- % molybdenum
- Contained Metal
- 47.8
- Contained Unit
- million lb.
Prior Estimate
- Resource Date
- 2026-08-11
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-02T00:00:00.000Z
Reasoning: Byproduct molybdenum grade reported within proven reserves.
Evidence · text
“grading 0.079% tungsten trioxide and 0.025% molybdenum, containing 6.8 million mtu of tungsten trioxide and 47.8 million lb. of molybdenum”
Tags used in scoring
Proven Reservepositive
Measured Resource with demonstrated economic viability after applying modifying factors.
Why it applies: category is "proven"
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
No QP/CP Disclosurenegative
No Qualified Person or Competent Person named — lower credibility for the estimate. A QP/CP should be a member of a recognized professional association with relevant experience.
Why it applies: no Qualified or Competent Person is named anywhere in the release
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
probableSisson · tungstenTonnes: 191200000Grade: 0.073Grade Unit: % tungsten trioxideContained Metal: 13.9Contained Unit: million mtuView all detailsHide details
Identity
- Project
- Sisson
- Commodity
- tungsten
- Region
- canada_nb
- Reported Region
- New Brunswick
- Ticker
- NCF
Resource scope
- Estimate type
- reserve
- Resource group id
- resource:00b5305a3e15425adf25
- Deposit or zone
- Sisson
- Mining method
- open_pit
Resource Data
- Category
- probable
- Tonnes
- 191200000
- Grade
- 0.073
- Grade Unit
- % tungsten trioxide
- Contained Metal
- 13.9
- Contained Unit
- million mtu
Prior Estimate
- Resource Date
- 2026-08-11
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-02T00:00:00.000Z
Reasoning: Large probable reserve reported.
Evidence · text
“Probable reserves add 191.2 million tonnes grading 0.073% tungsten trioxide”
Tags used in scoring
Probable Reservepositive
Indicated Resource with demonstrated economic viability after applying modifying factors.
Why it applies: category is "probable"
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
No QP/CP Disclosurenegative
No Qualified Person or Competent Person named — lower credibility for the estimate. A QP/CP should be a member of a recognized professional association with relevant experience.
Why it applies: no Qualified or Competent Person is named anywhere in the release
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
probableSisson · molybdenumTonnes: 191200000Grade: 0.021Grade Unit: % molybdenumContained Metal: 90.6Contained Unit: million lb.View all detailsHide details
Identity
- Project
- Sisson
- Commodity
- molybdenum
- Region
- canada_nb
- Reported Region
- New Brunswick
- Ticker
- NCF
Resource scope
- Estimate type
- reserve
- Resource group id
- resource:00b5305a3e15425adf25
- Deposit or zone
- Sisson
- Mining method
- open_pit
Resource Data
- Category
- probable
- Tonnes
- 191200000
- Grade
- 0.021
- Grade Unit
- % molybdenum
- Contained Metal
- 90.6
- Contained Unit
- million lb.
Prior Estimate
- Resource Date
- 2026-08-11
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-02T00:00:00.000Z
Reasoning: Byproduct molybdenum grade reported within probable reserves.
Evidence · text
“grading 0.073% tungsten trioxide and 0.021% molybdenum, containing 13.9 million mtu and 90.6 million lb., respectively”
Tags used in scoring
Probable Reservepositive
Indicated Resource with demonstrated economic viability after applying modifying factors.
Why it applies: category is "probable"
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
No QP/CP Disclosurenegative
No Qualified Person or Competent Person named — lower credibility for the estimate. A QP/CP should be a member of a recognized professional association with relevant experience.
Why it applies: no Qualified or Competent Person is named anywhere in the release
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
indicatedSisson · tungstenTonnes: 421600000Grade: 0.063Grade Unit: % tungsten trioxideContained Metal: 26.6Contained Unit: million mtuView all detailsHide details
Identity
- Project
- Sisson
- Commodity
- tungsten
- Region
- canada_nb
- Reported Region
- New Brunswick
- Ticker
- NCF
Resource scope
- Estimate type
- resource
- Resource group id
- resource:62c27b36bbc37250893c
- Deposit or zone
- Sisson
- Mining method
- open_pit
Resource Data
- Category
- indicated
- Tonnes
- 421600000
- Grade
- 0.063
- Grade Unit
- % tungsten trioxide
- Contained Metal
- 26.6
- Contained Unit
- million mtu
Prior Estimate
- Resource Date
- 2025-12-31
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-02T00:00:00.000Z
Reasoning: Significant M&I resource reported.
Evidence · text
“Measured and indicated resources, which include reserves, total 421.6 million tonnes grading 0.063% tungsten trioxide”
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
No QP/CP Disclosurenegative
No Qualified Person or Competent Person named — lower credibility for the estimate. A QP/CP should be a member of a recognized professional association with relevant experience.
Why it applies: no Qualified or Competent Person is named anywhere in the release
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
indicatedSisson · molybdenumTonnes: 421600000Grade: 0.02Grade Unit: % molybdenumContained Metal: 185.9Contained Unit: million lb.View all detailsHide details
Identity
- Project
- Sisson
- Commodity
- molybdenum
- Region
- canada_nb
- Reported Region
- New Brunswick
- Ticker
- NCF
Resource scope
- Estimate type
- resource
- Resource group id
- resource:62c27b36bbc37250893c
- Deposit or zone
- Sisson
- Mining method
- open_pit
Resource Data
- Category
- indicated
- Tonnes
- 421600000
- Grade
- 0.02
- Grade Unit
- % molybdenum
- Contained Metal
- 185.9
- Contained Unit
- million lb.
Prior Estimate
- Resource Date
- 2025-12-31
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-02T00:00:00.000Z
Reasoning: Byproduct molybdenum grade reported within M&I resource.
Evidence · text
“grading 0.063% tungsten trioxide and 0.020% molybdenum, containing 26.6 million mtu of tungsten trioxide and 185.9 million lb. of molybdenum”
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
No QP/CP Disclosurenegative
No Qualified Person or Competent Person named — lower credibility for the estimate. A QP/CP should be a member of a recognized professional association with relevant experience.
Why it applies: no Qualified or Competent Person is named anywhere in the release
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
inferredSisson · tungstenTonnes: 182900000Grade: 0.048Grade Unit: % tungsten trioxideContained Metal: 8.8Contained Unit: million mtuView all detailsHide details
Identity
- Project
- Sisson
- Commodity
- tungsten
- Region
- canada_nb
- Reported Region
- New Brunswick
- Ticker
- NCF
Resource scope
- Estimate type
- resource
- Resource group id
- resource:7cfc7e98d5517947b434
- Deposit or zone
- Sisson
- Mining method
- open_pit
Resource Data
- Category
- inferred
- Tonnes
- 182900000
- Grade
- 0.048
- Grade Unit
- % tungsten trioxide
- Contained Metal
- 8.8
- Contained Unit
- million mtu
Prior Estimate
- Resource Date
- 2025-12-31
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-02T00:00:00.000Z
Reasoning: Inferred resource component reported.
Negative factors
- Inferred category limits economic confidence
Evidence · text
“Inferred resources add 182.9 million tonnes at 0.048% tungsten trioxide”
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
No QP/CP Disclosurenegative
No Qualified Person or Competent Person named — lower credibility for the estimate. A QP/CP should be a member of a recognized professional association with relevant experience.
Why it applies: no Qualified or Competent Person is named anywhere in the release
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
inferredSisson · molybdenumTonnes: 182900000Grade: 0.02Grade Unit: % molybdenumContained Metal: 80.6Contained Unit: million lb.View all detailsHide details
Identity
- Project
- Sisson
- Commodity
- molybdenum
- Region
- canada_nb
- Reported Region
- New Brunswick
- Ticker
- NCF
Resource scope
- Estimate type
- resource
- Resource group id
- resource:7cfc7e98d5517947b434
- Deposit or zone
- Sisson
- Mining method
- open_pit
Resource Data
- Category
- inferred
- Tonnes
- 182900000
- Grade
- 0.02
- Grade Unit
- % molybdenum
- Contained Metal
- 80.6
- Contained Unit
- million lb.
Prior Estimate
- Resource Date
- 2025-12-31
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-02T00:00:00.000Z
Reasoning: Byproduct molybdenum grade reported within inferred resource.
Negative factors
- Inferred category limits economic confidence
Evidence · text
“at 0.048% tungsten trioxide and 0.020% molybdenum, containing 8.8 million mtu and 80.6 million lb., respectively”
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
No QP/CP Disclosurenegative
No Qualified Person or Competent Person named — lower credibility for the estimate. A QP/CP should be a member of a recognized professional association with relevant experience.
Why it applies: no Qualified or Competent Person is named anywhere in the release
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.