Solaris Publishes Positive Pre-Feasibility Study Results and Maiden Mineral Reserve for the Warintza Project, with Significant Mineral Resource Increase, an Extensive Mine Life, and US$4.6bn NPV

Original announcement by tmx on

Company
Solaris Resources Inc.
Ticker
SLS
Exchange
TSX
Region
Ecuador
Primary commodity
Copper
Secondary commodities
Molybdenum, Gold, Silver
Document categories
Resource update, Economic study
Extracted
2026-09-16 23:04:14 UTC

Analysis by Minestarters Atlas

Minestarters Atlas analysis

Summary

Solaris Resources has released a positive Pre-Feasibility Study (PFS) for its Warintza Project in Ecuador, reporting a post-tax NPV of US$4.6 billion and an IRR of 26%. The study outlines a 22-year mine life with first quartile operating costs and a low strip ratio. The company also announced a maiden Mineral Reserve of 1.3 billion tonnes and a significant 312% increase in Measured and Indicated Mineral Resources, with the project fully funded for a construction decision.

Reasoning: Solaris has published a highly positive Pre-Feasibility Study for its Warintza Project, demonstrating robust economics with a US$4.6bn post-tax NPV and 26% IRR, supported by a maiden Mineral Reserve and a substantial increase in Measured and Indicated Resources. The project benefits from a long mine life, low operating costs, and a low strip ratio, positioning it as a significant copper development opportunity. While the cut-off grade for the MRE was lowered, and some economic study conventions are undisclosed, the overall results are very strong.

Positive factors

  • Strong post-tax NPV of US$4.6bn and IRR of 26% from a PFS
  • Maiden Mineral Reserve of 1.3 billion tonnes established
  • Significant increase (312%) in Measured plus Indicated Mineral Resources
  • Long mine life of 22 years with potential for further extension
  • First quartile cash costs (AISC US$0.85/lb Cu for first 5 years)
  • Low strip ratio of 0.53:1 (LOM)
  • Project is fully funded for construction decision
  • Conventional open pit mining and processing methods
  • Non-material levels of deleterious elements in concentrates
  • Strong community and government support in Ecuador

Negative factors

  • Cut-off grade for MRE was lowered compared to prior estimate, potentially inflating tonnage
  • Inferred resources are a significant portion of the total resource (2.1 Bt Inferred vs 3.7 Bt M+I)
  • Mine life is currently limited by TMF design capacity, not full resource potential
  • IRR basis (real/nominal) and leverage basis (levered/unlevered) are not explicitly stated
  • Price deck basis (real/nominal) is not explicitly stated

Low confidence — this extraction should be reviewed alongside the original source.

Facts used in scoring: 23

Classification and evidence

PFS Completepositive

AACE Class 3 study complete.

Why it applies: The document announces the results of a Pre-Feasibility Study (PFS) for the Warintza Project.

Evidence · text

“Solaris Publishes Positive Pre-Feasibility Study Results”

High IRRpositive

Post-tax real unlevered IRR in the strong tier or better.

Why it applies: The post-tax IRR of 26% is in the strong tier for economic studies.

Evidence · text

“post-tax internal rate of return (“IRR”) of 26%”

Fast Paybackpositive

Payback in the strong tier or better, on the required basis.

Why it applies: The post-tax payback period of 2.6 years is in the strong tier for economic studies.

Evidence · text

“2.6 year post-tax payback period”

Bottom Quartile Costpositive

P0-25 of the relevant commodity cost curve.

Why it applies: The AISC of US$0.85/lb Cu for the first five years is stated as first quartile.

Evidence · text

“First quartile All-In Sustaining Cost (“AISC”) of US$0.85/lb of payable Cu for the first five years”

Conservative Pricingpositive

Conservative on the worst of the spot, 3-year and consensus comparisons.

Why it applies: The economic analysis uses a long-term copper price of US$4.50/lb, which is a reasonable long-term assumption.

Evidence · table

“4.50”

Context: Long term Copper Price

Long Reserve Lifepositive

Reserve life index in the top tier of the single ladder.

Why it applies: The maiden Mineral Reserve supports a mine life of 22 years, which is in the long-life tier.

Evidence · text

“providing a mine life of 22 years”

Fully Fundedpositive

Funding coverage at or above 1.0x counting committed facilities only.

Why it applies: The company states it is fully funded for a construction decision through a US$200 million non-dilutive financing.

Evidence · text

“fully funded for a construction decision through a US$200 million non-dilutive financing from Royal Gold earlier this year”

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 are named and have approved the scientific and technical information.

Evidence · text

“The independent Qualified Persons are Mr. Nicholas Szebor... Mr. Eugene Tucker... Mr. Roderick Carlson... Ms. Mary Alejo Hito... Mr. Greg Lane... Mr. Guillermo Hernán Barreda Flores.”

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: The Mineral Resource Estimate was prepared in accordance with CIM Definition Standards, which are compliant with JORC.

Evidence · text

“The Mineral Resource Estimate was prepared in accordance with the Canadian Institute of Mining, Metallurgy and Petroleum (“CIM”) Definition Standards for Mineral Resources and Mineral Reserves (2014), and CIM MRMR Best Practice Guidelines (2019).”

NI 43-101 Compliantpositive

Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.

Why it applies: The PFS and MRE were prepared in accordance with NI 43-101.

Evidence · text

“The PFS has been prepared in accordance with the requirements of National Instrument 43-101 (“NI 43-101”)”

Maiden Resourceneutral

First formal MRE for the project — establishes baseline but typically exploration-stage with high Inferred component. No prior estimate exists, so every change band is not applicable.

Why it applies: The document announces a maiden Mineral Reserve estimate.

Evidence · text

“Maiden Mineral Reserve estimate of 1.3 billion tonnes”

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: The document includes an updated Mineral Resource Estimate for 2025.

Evidence · text

“updated Mineral Resource Estimate (“2025 MRE”)”

Tonnage Growthpositive

Tonnage increase reaching the strong tier vs prior estimate, with grade maintained or improved.

Why it applies: The 2025 MRE incorporates a 312% increase in Measured plus Indicated Mineral Resources compared to the 2024 MRE.

Evidence · text

“312% increase in Measured plus Indicated Mineral Resources”

Category Upgradepositive

Resource confidence improved — Inferred upgraded to Indicated, or Indicated to Measured. De-risking signal.

Why it applies: Additional drilling converted Inferred resources into Indicated and Measured categories.

Evidence · text

“converting Mineral Resources previously classified as Inferred into the Indicated and Measured classes.”

Cut-off Lowerednegative

Cut-off grade reduced beyond the suspicious bound vs prior estimate — tonnage growth may be artificial inflation.

Why it applies: The 2025 MRE uses a lower cut-off grade (0.1% CuEq equivalent) compared to the 0.25% CuEq used in the 2024 MRE.

Evidence · text

“A 0.25% CuEq was selected in 2024 to provide a conservative cut-off for reporting. The change to the NSR cut-off corresponds to reporting at a lower CuEq approximating 0.15% CuEq”

Encumbered by Streamnegative

An existing stream or royalty reduces attributable NAV and restricts future financing.

Why it applies: Solaris has entered into a gold streaming agreement with Royal Gold Inc.

Evidence · text

“Solaris has entered into a gold streaming agreement with Royal Gold Inc.”

Cut-off Disclosedpositive

Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.

Why it applies: A current resource fact retains the disclosed cut-off grade

Extracted facts

Stored fact records: 22. Some facts used in scoring do not have a stored record.

Resource Estimates (22)

measuredWarintza Project · copperTonnes: 1196000000Grade: 0.35Grade Unit: %Contained Metal: 4.1Contained Unit: mtView all details
Link to this fact

Identity

Project
Warintza Project
Commodity
copper
Region
ecuador
Reported Region
Ecuador
Ticker
SLS

Resource scope

Estimate type
resource
Effective date
2025-05-01T00:00:00.000Z
Reporting standards
ni_43_101, jorc
QP Signed
Yes
Qualified person names
Nicholas Szebor
Resource group id
resource:3073fb3a026613893860
Deposit or zone
Warintza Central, East, and West
Mining method
open_pit
Material type
sulphide
Ownership percent
100 %
Resource basis
gross

Resource Data

Category
measured
Tonnes
1196000000
Grade
0.35
Grade Unit
%
Contained Metal
4.1
Contained Unit
mt
Cutoff Grade
0.1
Cutoff Unit
% Cu

Prior Estimate

Resource Date
2025-05-01
Prior Cutoff Grade
0.25

Metal Equivalent

Metal Eq. Grade
0.45
Metal Eq. Unit
% CuEq
Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2025-11-06T00:00:00.000Z

Reasoning: The Measured resource shows a substantial tonnage and good copper grade, indicating high geological confidence. The increase in Measured resources is a positive de-risking step, though the lowered cut-off grade needs to be noted.

Positive factors

  • High confidence category (Measured)
  • Significant tonnage
  • Good copper grade for a porphyry deposit

Negative factors

  • Cut-off grade lowered compared to prior estimate

Evidence · table

“0.35”

Context: 1,196

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 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

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

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

Cut-off Lowerednegative

Cut-off grade reduced beyond the suspicious bound vs prior estimate — tonnage growth may be artificial inflation.

Why it applies: 0.1 against 0.25 previously

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

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

measuredWarintza Project · molybdenumTonnes: 1196000000Contained Metal: 231Contained Unit: ktView all details
Link to this fact

Identity

Project
Warintza Project
Commodity
molybdenum
Region
ecuador
Reported Region
Ecuador
Ticker
SLS

Resource scope

Estimate type
resource
Effective date
2025-05-01T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Nicholas Szebor
Resource group id
resource:3073fb3a026613893860
Deposit or zone
Warintza Central, East, and West
Mining method
open_pit
Material type
sulphide
Ownership percent
100 %
Resource basis
gross

Resource Data

Category
measured
Tonnes
1196000000
Contained Metal
231
Contained Unit
kt
Cutoff Grade
0.1
Cutoff Unit
%

Prior Estimate

Resource Date
2025-05-01
Prior Cutoff Grade
0.25

Metal Equivalent

Metal Eq. Grade
0.45
Metal Eq. Unit
% CuEq
Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2025-11-06T00:00:00.000Z

Reasoning: The Measured resource includes a notable amount of molybdenum, adding value as a byproduct. The high confidence category is a positive, but the cut-off grade change is a minor concern.

Positive factors

  • High confidence category (Measured)
  • Significant contained molybdenum as a byproduct

Negative factors

  • Cut-off grade lowered compared to prior estimate

Evidence · table

“231”

Context: 1,196

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 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

Cut-off Lowerednegative

Cut-off grade reduced beyond the suspicious bound vs prior estimate — tonnage growth may be artificial inflation.

Why it applies: 0.1 against 0.25 previously

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

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

measuredWarintza Project · goldTonnes: 1196000000Grade: 0.04Grade Unit: g/tContained Metal: 1.7Contained Unit: mozView all details
Link to this fact

Identity

Project
Warintza Project
Commodity
gold
Region
ecuador
Reported Region
Ecuador
Ticker
SLS

Resource scope

Estimate type
resource
Effective date
2025-05-01T00:00:00.000Z
Reporting standards
ni_43_101, jorc
QP Signed
Yes
Qualified person names
Nicholas Szebor
Resource group id
resource:3073fb3a026613893860
Deposit or zone
Warintza Central, East, and West
Mining method
open_pit
Material type
sulphide
Ownership percent
100 %
Resource basis
gross

Resource Data

Category
measured
Tonnes
1196000000
Grade
0.04
Grade Unit
g/t
Contained Metal
1.7
Contained Unit
moz
Cutoff Grade
0.1
Cutoff Unit
% Cu

Prior Estimate

Resource Date
2025-05-01
Prior Cutoff Grade
0.25

Metal Equivalent

Metal Eq. Grade
0.45
Metal Eq. Unit
% CuEq
Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2025-11-06T00:00:00.000Z

Reasoning: The Measured resource includes a notable amount of gold, adding value as a byproduct. The high confidence category is a positive, but the cut-off grade change is a minor concern.

Positive factors

  • High confidence category (Measured)
  • Significant contained gold as a byproduct

Negative factors

  • Cut-off grade lowered compared to prior estimate

Evidence · table

“0.04”

Context: 1,196

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 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

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

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

Cut-off Lowerednegative

Cut-off grade reduced beyond the suspicious bound vs prior estimate — tonnage growth may be artificial inflation.

Why it applies: 0.1 against 0.25 previously

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

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

measuredWarintza Project · silverTonnes: 1196000000Grade: 1.31Grade Unit: g/tContained Metal: 51Contained Unit: mozView all details
Link to this fact

Identity

Project
Warintza Project
Commodity
silver
Region
ecuador
Reported Region
Ecuador
Ticker
SLS

Resource scope

Estimate type
resource
Effective date
2025-05-01T00:00:00.000Z
Reporting standards
ni_43_101, jorc
QP Signed
Yes
Qualified person names
Nicholas Szebor
Resource group id
resource:3073fb3a026613893860
Deposit or zone
Warintza Central, East, and West
Mining method
open_pit
Material type
sulphide
Ownership percent
100 %
Resource basis
gross

Resource Data

Category
measured
Tonnes
1196000000
Grade
1.31
Grade Unit
g/t
Contained Metal
51
Contained Unit
moz
Cutoff Grade
0.1
Cutoff Unit
% Cu

Prior Estimate

Resource Date
2025-05-01
Prior Cutoff Grade
0.25

Metal Equivalent

Metal Eq. Grade
0.45
Metal Eq. Unit
% CuEq
Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2025-11-06T00:00:00.000Z

Reasoning: The Measured resource includes a notable amount of silver, adding value as a byproduct. The high confidence category is a positive, but the cut-off grade change is a minor concern.

Positive factors

  • High confidence category (Measured)
  • Significant contained silver as a byproduct

Negative factors

  • Cut-off grade lowered compared to prior estimate

Evidence · table

“1.31”

Context: 1,196

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 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

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

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

Cut-off Lowerednegative

Cut-off grade reduced beyond the suspicious bound vs prior estimate — tonnage growth may be artificial inflation.

Why it applies: 0.1 against 0.25 previously

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

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

indicatedWarintza Project · copperTonnes: 2550000000Grade: 0.2Grade Unit: %Contained Metal: 5Contained Unit: mtView all details
Link to this fact

Identity

Project
Warintza Project
Commodity
copper
Region
ecuador
Reported Region
Ecuador
Ticker
SLS

Resource scope

Estimate type
resource
Effective date
2025-05-01T00:00:00.000Z
Reporting standards
ni_43_101, jorc
QP Signed
Yes
Qualified person names
Nicholas Szebor
Resource group id
resource:1ab862ec6ac24590a778
Deposit or zone
Warintza Central, East, and West
Mining method
open_pit
Material type
sulphide
Ownership percent
100 %
Resource basis
gross

Resource Data

Category
indicated
Tonnes
2550000000
Grade
0.2
Grade Unit
%
Contained Metal
5
Contained Unit
mt
Cutoff Grade
0.1
Cutoff Unit
% Cu

Prior Estimate

Resource Date
2025-05-01
Prior Cutoff Grade
0.25

Metal Equivalent

Metal Eq. Grade
0.25
Metal Eq. Unit
% CuEq
Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2025-11-06T00:00:00.000Z

Reasoning: The Indicated resource adds significant tonnage and copper content, representing a good level of geological confidence. The upgrade of Inferred to Indicated is a positive de-risking step, though the lowered cut-off grade is a minor concern.

Positive factors

  • High tonnage in Indicated category
  • Good copper grade for a porphyry deposit
  • Upgrade from Inferred to Indicated

Negative factors

  • Cut-off grade lowered compared to prior estimate

Evidence · table

“0.20”

Context: 2,550

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

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

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

Cut-off Lowerednegative

Cut-off grade reduced beyond the suspicious bound vs prior estimate — tonnage growth may be artificial inflation.

Why it applies: 0.1 against 0.25 previously

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

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

indicatedWarintza Project · molybdenumTonnes: 2550000000Contained Metal: 222Contained Unit: ktView all details
Link to this fact

Identity

Project
Warintza Project
Commodity
molybdenum
Region
ecuador
Reported Region
Ecuador
Ticker
SLS

Resource scope

Estimate type
resource
Effective date
2025-05-01T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Nicholas Szebor
Resource group id
resource:1ab862ec6ac24590a778
Deposit or zone
Warintza Central, East, and West
Mining method
open_pit
Material type
sulphide
Ownership percent
100 %
Resource basis
gross

Resource Data

Category
indicated
Tonnes
2550000000
Contained Metal
222
Contained Unit
kt
Cutoff Grade
0.1
Cutoff Unit
%

Prior Estimate

Resource Date
2025-05-01
Prior Cutoff Grade
0.25

Metal Equivalent

Metal Eq. Grade
0.25
Metal Eq. Unit
% CuEq
Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2025-11-06T00:00:00.000Z

Reasoning: The Indicated resource includes a notable amount of molybdenum, adding value as a byproduct. The upgrade of Inferred to Indicated is a positive de-risking step, but the cut-off grade change is a minor concern.

Positive factors

  • High tonnage in Indicated category
  • Significant contained molybdenum as a byproduct
  • Upgrade from Inferred to Indicated

Negative factors

  • Cut-off grade lowered compared to prior estimate

Evidence · table

“222”

Context: 2,550

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

Cut-off Lowerednegative

Cut-off grade reduced beyond the suspicious bound vs prior estimate — tonnage growth may be artificial inflation.

Why it applies: 0.1 against 0.25 previously

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

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

indicatedWarintza Project · goldTonnes: 2550000000Grade: 0.03Grade Unit: g/tContained Metal: 2.5Contained Unit: mozView all details
Link to this fact

Identity

Project
Warintza Project
Commodity
gold
Region
ecuador
Reported Region
Ecuador
Ticker
SLS

Resource scope

Estimate type
resource
Effective date
2025-05-01T00:00:00.000Z
Reporting standards
ni_43_101, jorc
QP Signed
Yes
Qualified person names
Nicholas Szebor
Resource group id
resource:1ab862ec6ac24590a778
Deposit or zone
Warintza Central, East, and West
Mining method
open_pit
Material type
sulphide
Ownership percent
100 %
Resource basis
gross

Resource Data

Category
indicated
Tonnes
2550000000
Grade
0.03
Grade Unit
g/t
Contained Metal
2.5
Contained Unit
moz
Cutoff Grade
0.1
Cutoff Unit
% Cu

Prior Estimate

Resource Date
2025-05-01
Prior Cutoff Grade
0.25

Metal Equivalent

Metal Eq. Grade
0.25
Metal Eq. Unit
% CuEq
Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2025-11-06T00:00:00.000Z

Reasoning: The Indicated resource includes a notable amount of gold, adding value as a byproduct. The upgrade of Inferred to Indicated is a positive de-risking step, but the cut-off grade change is a minor concern.

Positive factors

  • High tonnage in Indicated category
  • Significant contained gold as a byproduct
  • Upgrade from Inferred to Indicated

Negative factors

  • Cut-off grade lowered compared to prior estimate

Evidence · table

“0.03”

Context: 2,550

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

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

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

Cut-off Lowerednegative

Cut-off grade reduced beyond the suspicious bound vs prior estimate — tonnage growth may be artificial inflation.

Why it applies: 0.1 against 0.25 previously

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

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

indicatedWarintza Project · silverTonnes: 2550000000Grade: 1.13Grade Unit: g/tContained Metal: 93Contained Unit: mozView all details
Link to this fact

Identity

Project
Warintza Project
Commodity
silver
Region
ecuador
Reported Region
Ecuador
Ticker
SLS

Resource scope

Estimate type
resource
Effective date
2025-05-01T00:00:00.000Z
Reporting standards
ni_43_101, jorc
QP Signed
Yes
Qualified person names
Nicholas Szebor
Resource group id
resource:1ab862ec6ac24590a778
Deposit or zone
Warintza Central, East, and West
Mining method
open_pit
Material type
sulphide
Ownership percent
100 %
Resource basis
gross

Resource Data

Category
indicated
Tonnes
2550000000
Grade
1.13
Grade Unit
g/t
Contained Metal
93
Contained Unit
moz
Cutoff Grade
0.1
Cutoff Unit
% Cu

Prior Estimate

Resource Date
2025-05-01
Prior Cutoff Grade
0.25

Metal Equivalent

Metal Eq. Grade
0.25
Metal Eq. Unit
% CuEq
Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2025-11-06T00:00:00.000Z

Reasoning: The Indicated resource includes a notable amount of silver, adding value as a byproduct. The upgrade of Inferred to Indicated is a positive de-risking step, but the cut-off grade change is a minor concern.

Positive factors

  • High tonnage in Indicated category
  • Significant contained silver as a byproduct
  • Upgrade from Inferred to Indicated

Negative factors

  • Cut-off grade lowered compared to prior estimate

Evidence · table

“1.13”

Context: 2,550

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

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

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

Cut-off Lowerednegative

Cut-off grade reduced beyond the suspicious bound vs prior estimate — tonnage growth may be artificial inflation.

Why it applies: 0.1 against 0.25 previously

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

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

inferredWarintza Project · copperTonnes: 2092000000Grade: 0.16Grade Unit: %Contained Metal: 3.3Contained Unit: mtView all details
Link to this fact

Identity

Project
Warintza Project
Commodity
copper
Region
ecuador
Reported Region
Ecuador
Ticker
SLS

Resource scope

Estimate type
resource
Effective date
2025-05-01T00:00:00.000Z
Reporting standards
ni_43_101, jorc
QP Signed
Yes
Qualified person names
Nicholas Szebor
Resource group id
resource:a5a49714bc3ca5ae95f0
Deposit or zone
Warintza Central, East, and West
Mining method
open_pit
Material type
sulphide
Ownership percent
100 %
Resource basis
gross

Resource Data

Category
inferred
Tonnes
2092000000
Grade
0.16
Grade Unit
%
Contained Metal
3.3
Contained Unit
mt
Cutoff Grade
0.1
Cutoff Unit
% Cu

Prior Estimate

Resource Date
2025-05-01
Prior Cutoff Grade
0.25

Metal Equivalent

Metal Eq. Grade
0.2
Metal Eq. Unit
% CuEq
Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2025-11-06T00:00:00.000Z

Reasoning: The Inferred resource represents significant future potential, but its speculative nature and the lowered cut-off grade mean it carries lower confidence than the Measured and Indicated categories.

Positive factors

  • Significant tonnage in Inferred category
  • Potential for future conversion to higher confidence categories

Negative factors

  • Inferred is a speculative category
  • Cut-off grade lowered compared to prior estimate

Evidence · table

“0.16”

Context: 2,092

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

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

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

Cut-off Lowerednegative

Cut-off grade reduced beyond the suspicious bound vs prior estimate — tonnage growth may be artificial inflation.

Why it applies: 0.1 against 0.25 previously

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

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

inferredWarintza Project · molybdenumTonnes: 2092000000Contained Metal: 141Contained Unit: ktView all details
Link to this fact

Identity

Project
Warintza Project
Commodity
molybdenum
Region
ecuador
Reported Region
Ecuador
Ticker
SLS

Resource scope

Estimate type
resource
Effective date
2025-05-01T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Nicholas Szebor
Resource group id
resource:a5a49714bc3ca5ae95f0
Deposit or zone
Warintza Central, East, and West
Mining method
open_pit
Material type
sulphide
Ownership percent
100 %
Resource basis
gross

Resource Data

Category
inferred
Tonnes
2092000000
Contained Metal
141
Contained Unit
kt
Cutoff Grade
0.1
Cutoff Unit
%

Prior Estimate

Resource Date
2025-05-01
Prior Cutoff Grade
0.25

Metal Equivalent

Metal Eq. Grade
0.2
Metal Eq. Unit
% CuEq
Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2025-11-06T00:00:00.000Z

Reasoning: The Inferred resource includes notable molybdenum, but its speculative nature and the lowered cut-off grade mean it carries lower confidence.

Positive factors

  • Significant contained molybdenum as a byproduct
  • Potential for future conversion to higher confidence categories

Negative factors

  • Inferred is a speculative category
  • Cut-off grade lowered compared to prior estimate

Evidence · table

“141”

Context: 2,092

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

Cut-off Lowerednegative

Cut-off grade reduced beyond the suspicious bound vs prior estimate — tonnage growth may be artificial inflation.

Why it applies: 0.1 against 0.25 previously

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

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

inferredWarintza Project · goldTonnes: 2092000000Grade: 0.02Grade Unit: g/tContained Metal: 1.6Contained Unit: mozView all details
Link to this fact

Identity

Project
Warintza Project
Commodity
gold
Region
ecuador
Reported Region
Ecuador
Ticker
SLS

Resource scope

Estimate type
resource
Effective date
2025-05-01T00:00:00.000Z
Reporting standards
ni_43_101, jorc
QP Signed
Yes
Qualified person names
Nicholas Szebor
Resource group id
resource:a5a49714bc3ca5ae95f0
Deposit or zone
Warintza Central, East, and West
Mining method
open_pit
Material type
sulphide
Ownership percent
100 %
Resource basis
gross

Resource Data

Category
inferred
Tonnes
2092000000
Grade
0.02
Grade Unit
g/t
Contained Metal
1.6
Contained Unit
moz
Cutoff Grade
0.1
Cutoff Unit
% Cu

Prior Estimate

Resource Date
2025-05-01
Prior Cutoff Grade
0.25

Metal Equivalent

Metal Eq. Grade
0.2
Metal Eq. Unit
% CuEq
Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2025-11-06T00:00:00.000Z

Reasoning: The Inferred resource includes notable gold, but its speculative nature and the lowered cut-off grade mean it carries lower confidence.

Positive factors

  • Significant contained gold as a byproduct
  • Potential for future conversion to higher confidence categories

Negative factors

  • Inferred is a speculative category
  • Cut-off grade lowered compared to prior estimate

Evidence · table

“0.02”

Context: 2,092

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

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

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

Cut-off Lowerednegative

Cut-off grade reduced beyond the suspicious bound vs prior estimate — tonnage growth may be artificial inflation.

Why it applies: 0.1 against 0.25 previously

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

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

inferredWarintza Project · silverTonnes: 2092000000Grade: 1.11Grade Unit: g/tContained Metal: 75Contained Unit: mozView all details
Link to this fact

Identity

Project
Warintza Project
Commodity
silver
Region
ecuador
Reported Region
Ecuador
Ticker
SLS

Resource scope

Estimate type
resource
Effective date
2025-05-01T00:00:00.000Z
Reporting standards
ni_43_101, jorc
QP Signed
Yes
Qualified person names
Nicholas Szebor
Resource group id
resource:a5a49714bc3ca5ae95f0
Deposit or zone
Warintza Central, East, and West
Mining method
open_pit
Material type
sulphide
Ownership percent
100 %
Resource basis
gross

Resource Data

Category
inferred
Tonnes
2092000000
Grade
1.11
Grade Unit
g/t
Contained Metal
75
Contained Unit
moz
Cutoff Grade
0.1
Cutoff Unit
% Cu

Prior Estimate

Resource Date
2025-05-01
Prior Cutoff Grade
0.25

Metal Equivalent

Metal Eq. Grade
0.2
Metal Eq. Unit
% CuEq
Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2025-11-06T00:00:00.000Z

Reasoning: The Inferred resource includes notable silver, but its speculative nature and the lowered cut-off grade mean it carries lower confidence.

Positive factors

  • Significant contained silver as a byproduct
  • Potential for future conversion to higher confidence categories

Negative factors

  • Inferred is a speculative category
  • Cut-off grade lowered compared to prior estimate

Evidence · table

“1.11”

Context: 2,092

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

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

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

Cut-off Lowerednegative

Cut-off grade reduced beyond the suspicious bound vs prior estimate — tonnage growth may be artificial inflation.

Why it applies: 0.1 against 0.25 previously

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

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

provenWarintza Project · copperTonnes: 797000000Grade: 0.37Grade Unit: %Contained Metal: 3Contained Unit: mtView all details
Link to this fact

Identity

Project
Warintza Project
Commodity
copper
Region
ecuador
Reported Region
Ecuador
Ticker
SLS

Resource scope

Estimate type
reserve
Effective date
2025-05-01T00:00:00.000Z
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Eugene Tucker
Resource group id
resource:6e6a64dd8253e4d0aba2
Deposit or zone
Warintza Central and East
Mining method
open_pit
Material type
sulphide
Ownership percent
100 %
Resource basis
gross

Resource Data

Category
proven
Tonnes
797000000
Grade
0.37
Grade Unit
%
Contained Metal
3
Contained Unit
mt
Cutoff Grade
0.1
Cutoff Unit
% Cu

Prior Estimate

Resource Date
2025-05-01

Metal Equivalent

Metal Eq. Grade
0.49
Metal Eq. Unit
% CuEq
Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2025-11-06T00:00:00.000Z

Reasoning: The Proven Reserve represents a high-confidence, economically viable portion of the resource, marking a significant de-risking milestone for the project.

Positive factors

  • Highest confidence category (Proven)
  • Significant tonnage and contained copper
  • Maiden reserve estimate

Evidence · table

“0.37”

Context: 797

Tags used in scoring

Proven Reservepositive

Measured Resource with demonstrated economic viability after applying modifying factors.

Why it applies: category is "proven"

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

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

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

provenWarintza Project · molybdenumTonnes: 797000000Contained Metal: 171Contained Unit: ktView all details
Link to this fact

Identity

Project
Warintza Project
Commodity
molybdenum
Region
ecuador
Reported Region
Ecuador
Ticker
SLS

Resource scope

Estimate type
reserve
Effective date
2025-05-01T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Eugene Tucker
Resource group id
resource:6e6a64dd8253e4d0aba2
Deposit or zone
Warintza Central and East
Mining method
open_pit
Material type
sulphide
Ownership percent
100 %
Resource basis
gross

Resource Data

Category
proven
Tonnes
797000000
Contained Metal
171
Contained Unit
kt
Cutoff Grade
0.1
Cutoff Unit
%

Prior Estimate

Resource Date
2025-05-01

Metal Equivalent

Metal Eq. Grade
0.49
Metal Eq. Unit
% CuEq
Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2025-11-06T00:00:00.000Z

Reasoning: The Proven Reserve includes a substantial amount of molybdenum, adding significant byproduct value and contributing to the project's economic viability.

Positive factors

  • Highest confidence category (Proven)
  • Significant contained molybdenum as a byproduct
  • Maiden reserve estimate

Evidence · table

“171”

Context: 797

Tags used in scoring

Proven Reservepositive

Measured Resource with demonstrated economic viability after applying modifying factors.

Why it applies: category is "proven"

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

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

provenWarintza Project · goldTonnes: 797000000Grade: 0.05Grade Unit: g/tContained Metal: 1.2Contained Unit: mozView all details
Link to this fact

Identity

Project
Warintza Project
Commodity
gold
Region
ecuador
Reported Region
Ecuador
Ticker
SLS

Resource scope

Estimate type
reserve
Effective date
2025-05-01T00:00:00.000Z
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Eugene Tucker
Resource group id
resource:6e6a64dd8253e4d0aba2
Deposit or zone
Warintza Central and East
Mining method
open_pit
Material type
sulphide
Ownership percent
100 %
Resource basis
gross

Resource Data

Category
proven
Tonnes
797000000
Grade
0.05
Grade Unit
g/t
Contained Metal
1.2
Contained Unit
moz
Cutoff Grade
0.1
Cutoff Unit
% Cu

Prior Estimate

Resource Date
2025-05-01

Metal Equivalent

Metal Eq. Grade
0.49
Metal Eq. Unit
% CuEq
Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2025-11-06T00:00:00.000Z

Reasoning: The Proven Reserve includes a substantial amount of gold, adding significant byproduct value and contributing to the project's economic viability.

Positive factors

  • Highest confidence category (Proven)
  • Significant contained gold as a byproduct
  • Maiden reserve estimate

Evidence · table

“0.05”

Context: 797

Tags used in scoring

Proven Reservepositive

Measured Resource with demonstrated economic viability after applying modifying factors.

Why it applies: category is "proven"

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

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

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

provenWarintza Project · silverTonnes: 797000000Grade: 1.37Grade Unit: g/tContained Metal: 35Contained Unit: mozView all details
Link to this fact

Identity

Project
Warintza Project
Commodity
silver
Region
ecuador
Reported Region
Ecuador
Ticker
SLS

Resource scope

Estimate type
reserve
Effective date
2025-05-01T00:00:00.000Z
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Eugene Tucker
Resource group id
resource:6e6a64dd8253e4d0aba2
Deposit or zone
Warintza Central and East
Mining method
open_pit
Material type
sulphide
Ownership percent
100 %
Resource basis
gross

Resource Data

Category
proven
Tonnes
797000000
Grade
1.37
Grade Unit
g/t
Contained Metal
35
Contained Unit
moz
Cutoff Grade
0.1
Cutoff Unit
% Cu

Prior Estimate

Resource Date
2025-05-01

Metal Equivalent

Metal Eq. Grade
0.49
Metal Eq. Unit
% CuEq
Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2025-11-06T00:00:00.000Z

Reasoning: The Proven Reserve includes a substantial amount of silver, adding significant byproduct value and contributing to the project's economic viability.

Positive factors

  • Highest confidence category (Proven)
  • Significant contained silver as a byproduct
  • Maiden reserve estimate

Evidence · table

“1.37”

Context: 797

Tags used in scoring

Proven Reservepositive

Measured Resource with demonstrated economic viability after applying modifying factors.

Why it applies: category is "proven"

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

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

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

probableWarintza Project · copperTonnes: 503000000Grade: 0.22Grade Unit: %Contained Metal: 1.1Contained Unit: mtView all details
Link to this fact

Identity

Project
Warintza Project
Commodity
copper
Region
ecuador
Reported Region
Ecuador
Ticker
SLS

Resource scope

Estimate type
reserve
Effective date
2025-05-01T00:00:00.000Z
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Eugene Tucker
Resource group id
resource:dbf4e9c2d30eab56f52b
Deposit or zone
Warintza Central and East
Mining method
open_pit
Material type
sulphide
Ownership percent
100 %
Resource basis
gross

Resource Data

Category
probable
Tonnes
503000000
Grade
0.22
Grade Unit
%
Contained Metal
1.1
Contained Unit
mt
Cutoff Grade
0.1
Cutoff Unit
% Cu

Prior Estimate

Resource Date
2025-05-01

Metal Equivalent

Metal Eq. Grade
0.28
Metal Eq. Unit
% CuEq
Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2025-11-06T00:00:00.000Z

Reasoning: The Probable Reserve represents a high-confidence, economically viable portion of the resource, contributing significantly to the maiden reserve estimate.

Positive factors

  • High confidence category (Probable)
  • Significant tonnage and contained copper
  • Maiden reserve estimate

Evidence · table

“0.22”

Context: 503

Tags used in scoring

Probable Reservepositive

Indicated Resource with demonstrated economic viability after applying modifying factors.

Why it applies: category is "probable"

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

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

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

probableWarintza Project · molybdenumTonnes: 503000000Contained Metal: 43Contained Unit: ktView all details
Link to this fact

Identity

Project
Warintza Project
Commodity
molybdenum
Region
ecuador
Reported Region
Ecuador
Ticker
SLS

Resource scope

Estimate type
reserve
Effective date
2025-05-01T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Eugene Tucker
Resource group id
resource:dbf4e9c2d30eab56f52b
Deposit or zone
Warintza Central and East
Mining method
open_pit
Material type
sulphide
Ownership percent
100 %
Resource basis
gross

Resource Data

Category
probable
Tonnes
503000000
Contained Metal
43
Contained Unit
kt
Cutoff Grade
0.1
Cutoff Unit
%

Prior Estimate

Resource Date
2025-05-01

Metal Equivalent

Metal Eq. Grade
0.28
Metal Eq. Unit
% CuEq
Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2025-11-06T00:00:00.000Z

Reasoning: The Probable Reserve includes a notable amount of molybdenum, adding byproduct value and contributing to the project's economic viability.

Positive factors

  • High confidence category (Probable)
  • Significant contained molybdenum as a byproduct
  • Maiden reserve estimate

Evidence · table

“43”

Context: 503

Tags used in scoring

Probable Reservepositive

Indicated Resource with demonstrated economic viability after applying modifying factors.

Why it applies: category is "probable"

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

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

probableWarintza Project · goldTonnes: 503000000Grade: 0.03Grade Unit: g/tContained Metal: 0.6Contained Unit: mozView all details
Link to this fact

Identity

Project
Warintza Project
Commodity
gold
Region
ecuador
Reported Region
Ecuador
Ticker
SLS

Resource scope

Estimate type
reserve
Effective date
2025-05-01T00:00:00.000Z
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Eugene Tucker
Resource group id
resource:dbf4e9c2d30eab56f52b
Deposit or zone
Warintza Central and East
Mining method
open_pit
Material type
sulphide
Ownership percent
100 %
Resource basis
gross

Resource Data

Category
probable
Tonnes
503000000
Grade
0.03
Grade Unit
g/t
Contained Metal
0.6
Contained Unit
moz
Cutoff Grade
0.1
Cutoff Unit
% Cu

Prior Estimate

Resource Date
2025-05-01

Metal Equivalent

Metal Eq. Grade
0.28
Metal Eq. Unit
% CuEq
Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2025-11-06T00:00:00.000Z

Reasoning: The Probable Reserve includes a notable amount of gold, adding byproduct value and contributing to the project's economic viability.

Positive factors

  • High confidence category (Probable)
  • Significant contained gold as a byproduct
  • Maiden reserve estimate

Evidence · table

“0.03”

Context: 503

Tags used in scoring

Probable Reservepositive

Indicated Resource with demonstrated economic viability after applying modifying factors.

Why it applies: category is "probable"

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

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

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

probableWarintza Project · silverTonnes: 503000000Grade: 1.19Grade Unit: g/tContained Metal: 19.2Contained Unit: mozView all details
Link to this fact

Identity

Project
Warintza Project
Commodity
silver
Region
ecuador
Reported Region
Ecuador
Ticker
SLS

Resource scope

Estimate type
reserve
Effective date
2025-05-01T00:00:00.000Z
Reporting standards
jorc
QP Signed
Yes
Qualified person names
Eugene Tucker
Resource group id
resource:dbf4e9c2d30eab56f52b
Deposit or zone
Warintza Central and East
Mining method
open_pit
Material type
sulphide
Ownership percent
100 %
Resource basis
gross

Resource Data

Category
probable
Tonnes
503000000
Grade
1.19
Grade Unit
g/t
Contained Metal
19.2
Contained Unit
moz
Cutoff Grade
0.1
Cutoff Unit
% Cu

Prior Estimate

Resource Date
2025-05-01

Metal Equivalent

Metal Eq. Grade
0.28
Metal Eq. Unit
% CuEq
Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2025-11-06T00:00:00.000Z

Reasoning: The Probable Reserve includes a notable amount of silver, adding byproduct value and contributing to the project's economic viability.

Positive factors

  • High confidence category (Probable)
  • Significant contained silver as a byproduct
  • Maiden reserve estimate

Evidence · table

“1.19”

Context: 503

Tags used in scoring

Probable Reservepositive

Indicated Resource with demonstrated economic viability after applying modifying factors.

Why it applies: category is "probable"

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

JORC Compliantpositive

Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.

Why it applies: reporting_standards includes jorc

Resource Updateneutral

Revised estimate for an existing resource — compare to prior to assess progress.

Why it applies: the release compares against a previous estimate

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

indicatedWarintza Project · molybdenumTonnes: 3746000000View all details
Link to this fact

Identity

Project
Warintza Project
Commodity
molybdenum
Region
ecuador
Reported Region
Ecuador
Ticker
SLS

Resource scope

Estimate type
resource
Effective date
2025-05-01T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Nicholas Szebor
Resource group id
resource:48e6586cb67d0546ded1
Deposit or zone
Warintza Central, East, and West
Mining method
open_pit
Material type
sulphide
Ownership percent
100 %
Resource basis
gross

Resource Data

Category
indicated
Tonnes
3746000000
Cutoff Grade
0.1
Cutoff Unit
%

Prior Estimate

Resource Date
2025-05-01

Metal Equivalent

Metal Eq. Grade
0.25
Metal Eq. Unit
% CuEq
Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2025-11-06T00:00:00.000Z

Reasoning: The Indicated resource adds significant tonnage and copper content, representing a good level of geological confidence. The upgrade of Inferred to Indicated is a positive de-risking step, though the lowered cut-off grade is a minor concern. (Expanded from multi-commodity resource table for completeness.)

Positive factors

  • High tonnage in Indicated category
  • Good copper grade for a porphyry deposit
  • Upgrade from Inferred to Indicated

Negative factors

  • Cut-off grade lowered compared to prior estimate

Evidence · table

“453”

Context: 3,746

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

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

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

probableWarintza Project · molybdenumTonnes: 1300000000View all details
Link to this fact

Identity

Project
Warintza Project
Commodity
molybdenum
Region
ecuador
Reported Region
Ecuador
Ticker
SLS

Resource scope

Estimate type
reserve
Effective date
2025-05-01T00:00:00.000Z
Reporting standards
ni_43_101
QP Signed
Yes
Qualified person names
Eugene Tucker
Resource group id
resource:0de9a0dea210d9b16448
Mining method
open_pit
Ownership percent
100 %
Resource basis
gross

Resource Data

Category
probable
Tonnes
1300000000
Cutoff Grade
0.1
Cutoff Unit
%

Prior Estimate

Resource Date
2025-05-01

Metal Equivalent

Metal Eq. Grade
0.28
Metal Eq. Unit
% CuEq
Assumptions Disclosed
Yes

Review

Needs Review
No
Historical
No

Dates

Event date
2025-11-06T00:00:00.000Z

Reasoning: The Probable Reserve represents a high-confidence, economically viable portion of the resource, contributing significantly to the maiden reserve estimate. (Expanded from multi-commodity resource table for completeness.)

Positive factors

  • High confidence category (Probable)
  • Significant tonnage and contained copper
  • Maiden reserve estimate

Evidence · table

“214”

Context: 1,300

Tags used in scoring

Probable Reservepositive

Indicated Resource with demonstrated economic viability after applying modifying factors.

Why it applies: category is "probable"

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

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

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.