TDG Announces Positive Results from Ongoing Metallurgical Test Work - Conventional Processing Achieves >90% Gold and Silver Recoveries At Shasta, Toodoggone District
Original announcement by tmx on
- Company
- TDG Gold Corp.
- Ticker
- TDG
- Exchange
- TSX
- Region
- British Columbia
- Primary commodity
- Gold
- Secondary commodities
- Silver, Sulfur
- Document categories
- Metallurgy
- Extracted
- 2026-09-13 02:37:20 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
TDG Gold Corp. has reported positive metallurgical test results for the Shasta Gold-Silver Project, achieving average gold recoveries of 92.4% and silver recoveries of 90.3% using gravity and flotation. Locked-cycle testing on the MC1 composite demonstrated highly selective recovery with a low concentrate mass pull of 1.4%.
Reasoning: The locked-cycle test on MC1 demonstrates high recoveries for both gold and silver using a simple, conventional flowsheet with low mass pull and low impurities.
Positive factors
- High gold and silver recoveries (>90%)
- Conventional processing route (gravity + flotation)
- Low concentrate mass pull (1.4%)
- Low impurity levels (arsenic/copper)
- Coarse grind size (150 um) potential for lower OPEX
Negative factors
- Results are preliminary and laboratory-scale
- Lower recoveries observed in Baker tailings samples
Facts used in scoring: 7
Classification and evidence
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: Achieved >90% gold and silver recoveries in locked-cycle testing.
Evidence · text
“Over 91% recovery of both gold and silver demonstrated in locked-cycle testing.”
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: Preferred processing route is a conventional gravity and flotation process.
Evidence · text
“Simple gravity + flotation-based flowsheet selected as the preferred processing route”
QA/QC Disclosedpositive · Story-specific tag
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: Release mentions multi-element ICP and whole rock analyses were completed.
Evidence · text
“Multi-element ICP and whole rock analyses were completed on the samples”
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: the document describes a gravity route ("gravity")
Multi-Domain Testedpositive
Variability across ore domains (oxide, transition, fresh) has been addressed.
Why it applies: 3 distinct composites were tested
Extracted facts
Stored fact records: 7. Some facts used in scoring do not have a stored record.
Metallurgical Results (7)
locked-cycleShasta Gold-Silver Project · goldRecovery: 91.4 %View all detailsHide details
Identity
- Project
- Shasta Gold-Silver Project
- Commodity
- gold
- Region
- canada_bc
- Reported Region
- British Columbia
- Ticker
- TDG
Test Work
- Program Status
- detailed
- Test Type
- locked-cycle
- Processing Route
- gravity + flotation
- Sample
- MC1 locked cycle test - Combined Concentrate
Recovery
- Recovery
- 91.4 %
- Recovery Basis
- actual_test
- Conc. Grade
- 47
- Conc. Grade Unit
- g/t
- Mass Pull
- 1.4 %
Lab
- Laboratory
- Base Met Labs
- Consultant
- Ausenco
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-17T00:00:00.000Z
Reasoning: Combined concentrate shows high gold distribution (91.4%) and high grade (47 g/t) at low mass pull.
Positive factors
- High gold recovery distribution
- Low mass pull
Evidence · table
“47.0”
Context: 1.4
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
locked-cycleShasta Gold-Silver Project · silverRecovery: 91 %View all detailsHide details
Identity
- Project
- Shasta Gold-Silver Project
- Commodity
- silver
- Region
- canada_bc
- Reported Region
- British Columbia
- Ticker
- TDG
Test Work
- Program Status
- detailed
- Test Type
- locked-cycle
- Processing Route
- gravity + flotation
- Sample
- MC1 locked cycle test - Combined Concentrate
Recovery
- Recovery
- 91 %
- Recovery Basis
- actual_test
- Conc. Grade
- 2417
- Conc. Grade Unit
- g/t
- Mass Pull
- 1.4 %
Lab
- Laboratory
- Base Met Labs
- Consultant
- Ausenco
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-17T00:00:00.000Z
Reasoning: Combined concentrate shows high silver distribution (91.0%) and high grade (2417 g/t).
Positive factors
- High silver recovery distribution
- High silver concentrate grade
Evidence · table
“2417”
Context: 1.4
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: 91% is at or above the exceptional band (90%)
locked-cycleShasta Gold-Silver Project · sulfurRecovery: 92.9 %View all detailsHide details
Identity
- Project
- Shasta Gold-Silver Project
- Commodity
- sulfur
- Region
- canada_bc
- Reported Region
- British Columbia
- Ticker
- TDG
Test Work
- Program Status
- detailed
- Test Type
- locked-cycle
- Processing Route
- gravity + flotation
- Sample
- MC1 locked cycle test - Combined Concentrate
Recovery
- Recovery
- 92.9 %
- Recovery Basis
- actual_test
- Conc. Grade
- 45.4
- Conc. Grade Unit
- %
- Mass Pull
- 1.4 %
Lab
- Laboratory
- Base Met Labs
- Consultant
- Ausenco
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-17T00:00:00.000Z
Reasoning: High sulphur concentration in concentrate confirms sulphide-hosted mineralization.
Positive factors
- High sulphur recovery
Evidence · table
“45.4”
Context: 1.4
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
gravity plus rougher flotationShasta Gold-Silver Project · goldRecovery: 68 %View all detailsHide details
Identity
- Project
- Shasta Gold-Silver Project
- Commodity
- gold
- Region
- canada_bc
- Reported Region
- British Columbia
- Ticker
- TDG
Test Work
- Program Status
- preliminary
- Test Type
- gravity plus rougher flotation
- Processing Route
- gravity plus rougher flotation
- Sample
- Baker TSF samples (gravity plus rougher flotation)
Recovery
- Recovery
- 68 %
- Recovery Basis
- actual_test
Reagents
- Reagent Notes
- Tested with higher PAX dosages of 50 g/t after initial tests indicated compromised sulphur kinetics.
Lab
- Laboratory
- Base Met Labs
- Consultant
- Ausenco
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-17T00:00:00.000Z
Reasoning: Recoveries for the Baker tailings are significantly lower than the primary Shasta composites.
Negative factors
- Lower gold recovery (68%) compared to Shasta composites
- Compromised sulphur kinetics noted
Evidence · text
“68% of the gold”
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
Low Recoverynegative
Recovery below the weak band for the commodity and processing route.
Why it applies: 68% is below the weak band (80%)
gravity plus rougher flotationShasta Gold-Silver Project · silverRecovery: 61 %View all detailsHide details
Identity
- Project
- Shasta Gold-Silver Project
- Commodity
- silver
- Region
- canada_bc
- Reported Region
- British Columbia
- Ticker
- TDG
Test Work
- Program Status
- preliminary
- Test Type
- gravity plus rougher flotation
- Processing Route
- gravity plus rougher flotation
- Sample
- Baker TSF samples (gravity plus rougher flotation)
Recovery
- Recovery
- 61 %
- Recovery Basis
- actual_test
Reagents
- Reagent Notes
- Tested with higher PAX dosages of 50 g/t after initial tests indicated compromised sulphur kinetics.
Lab
- Laboratory
- Base Met Labs
- Consultant
- Ausenco
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-17T00:00:00.000Z
Reasoning: Recoveries for the Baker tailings are significantly lower than the primary Shasta composites.
Negative factors
- Lower silver recovery (61%) compared to Shasta composites
Evidence · text
“61% of the silver”
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
Low Recoverynegative
Recovery below the weak band for the commodity and processing route.
Why it applies: 61% is below the weak band (75%)
gravity plus rougher flotationShasta Gold-Silver Project · goldRecovery: 83.8 %View all detailsHide details
Identity
- Project
- Shasta Gold-Silver Project
- Commodity
- gold
- Region
- canada_bc
- Reported Region
- British Columbia
- Ticker
- TDG
Test Work
- Program Status
- preliminary
- Test Type
- gravity plus rougher flotation
- Processing Route
- gravity plus rougher flotation
- Sample
- METS Prospect (gravity plus rougher flotation)
Recovery
- Recovery
- 83.8 %
- Recovery Basis
- actual_test
- Conc. Grade
- 1106
- Conc. Grade Unit
- g/t
Reagents
- Reagent Notes
- Mozley table gravity concentrate was quite high grade.
Lab
- Laboratory
- Base Met Labs
- Consultant
- Ausenco
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-17T00:00:00.000Z
Reasoning: While recovery is lower than Shasta, the gravity concentrate is exceptionally high grade.
Positive factors
- High grade gravity concentrate (1,106 g/t Au)
Negative factors
- Gold recovery (83.8%) is lower than Shasta composites
Evidence · text
“83.8% of the gold”
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
gravity plus rougher flotationShasta Gold-Silver Project · silverRecovery: 71.8 %View all detailsHide details
Identity
- Project
- Shasta Gold-Silver Project
- Commodity
- silver
- Region
- canada_bc
- Reported Region
- British Columbia
- Ticker
- TDG
Test Work
- Program Status
- preliminary
- Test Type
- gravity plus rougher flotation
- Processing Route
- gravity plus rougher flotation
- Sample
- METS Prospect (gravity plus rougher flotation)
Recovery
- Recovery
- 71.8 %
- Recovery Basis
- actual_test
Lab
- Laboratory
- Base Met Labs
- Consultant
- Ausenco
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-17T00:00:00.000Z
Reasoning: Silver recovery at METS is moderate at 71.8%.
Evidence · text
“71.8% of the silver”
Tags used in scoring
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: processing_route matches the flotation signal
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: processing_route matches the gravity signal
Low Recoverynegative
Recovery below the weak band for the commodity and processing route.
Why it applies: 71.8% is below the weak band (75%)
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.