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
- 2026-08-20 21:48:35 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 a conventional gravity and flotation circuit. Locked-cycle testing on master composite MC1 confirmed over 91% recovery for both metals with a highly selective 1.4% mass pull. The results support the selection of a simple, low-cost processing route for the project's Preliminary Economic Assessment.
Reasoning: The announcement reports strong, consistent recoveries for gold and silver using a conventional flowsheet, which significantly de-risks the project's metallurgical profile for the upcoming PEA.
Positive factors
- High gold and silver recoveries (>90%)
- Conventional processing route (gravity + flotation)
- Low concentrate mass pull (1.4%)
- Low impurity levels (arsenic/copper)
- Locked-cycle testing confirms results
Negative factors
- Results are preliminary and laboratory-scale
- Variability noted in Baker tailings and METS prospect
Facts used in scoring: 8
Classification and evidence
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: Gold and silver recoveries exceed 90% for the main Shasta deposit.
Evidence · text
“Average recoveries of 92.4% gold and 90.3% silver achieved”
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: The flowsheet uses a conventional gravity and flotation circuit.
Evidence · text
“simple, conventional gravity and flotation process”
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, whole rock analyses, and names Qualified Persons.
Evidence · text
“Multi-element ICP and whole rock analyses were completed on the samples”
Extracted facts
Stored fact records: 8. Some facts used in scoring do not have a stored record.
Metallurgical Results (8)
gravity and open circuit flotationgoldRecovery: 92.4 %Head Grade: 0.72Head Grade Unit: g/tView all detailsHide details
Identity
- Commodity
- gold
- Ticker
- TDG
Test Work
- Program Status
- detailed
- Test Type
- gravity and open circuit flotation
- Processing Route
- gravity concentration followed by conventional flotation
- Sample
- Shasta composites (open circuit variability/master composites)
- Grind P80
- 150 µm
Recovery
- Recovery
- 92.4 %
- Recovery Basis
- actual_test
- Head Grade
- 0.72
- Head Grade Unit
- g/t
Lab
- Laboratory
- Base Met Labs
- Consultant
- Ausenco Engineering Canada ULC
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-17T00:00:00.000Z
Reasoning: 92.4% recovery is exceptional for a conventional flotation route.
Positive factors
- Exceeds 90% recovery threshold
Evidence · text
“Average recoveries of 92.4% gold and 90.3% silver achieved using conventional gravity and open circuit flotation methods.”
gravity and open circuit flotationsilverRecovery: 90.3 %Head Grade: 37Head Grade Unit: g/tView all detailsHide details
Identity
- Commodity
- silver
- Ticker
- TDG
Test Work
- Program Status
- detailed
- Test Type
- gravity and open circuit flotation
- Processing Route
- gravity concentration followed by conventional flotation
- Sample
- Shasta composites (open circuit variability/master composites)
- Grind P80
- 150 µm
Recovery
- Recovery
- 90.3 %
- Recovery Basis
- actual_test
- Head Grade
- 37
- Head Grade Unit
- g/t
Lab
- Laboratory
- Base Met Labs
- Consultant
- Ausenco Engineering Canada ULC
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-17T00:00:00.000Z
Reasoning: 90.3% silver recovery is strong for this processing route.
Positive factors
- Exceeds 90% recovery threshold
Evidence · text
“Average recoveries of 92.4% gold and 90.3% silver achieved using conventional gravity and open circuit flotation methods.”
locked-cyclegoldRecovery: 91.4 %Head Grade: 0.72Head Grade Unit: g/tView all detailsHide details
Identity
- Commodity
- gold
- Ticker
- TDG
Test Work
- Program Status
- detailed
- Test Type
- locked-cycle
- Processing Route
- gravity + flotation
- Sample
- Master Composite MC1 (Locked Cycle Test)
Recovery
- Recovery
- 91.4 %
- Recovery Basis
- actual_test
- Head Grade
- 0.72
- Head Grade Unit
- g/t
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-17T00:00:00.000Z
Reasoning: Locked-cycle results validate the open-circuit results with >91% recovery.
Positive factors
- Confirmed high recovery in locked-cycle testing
Evidence · text
“Over 91% recovery of both gold and silver demonstrated in locked-cycle testing.”
locked-cyclesilverRecovery: 91 %Head Grade: 37Head Grade Unit: g/tView all detailsHide details
Identity
- Commodity
- silver
- Ticker
- TDG
Test Work
- Program Status
- detailed
- Test Type
- locked-cycle
- Processing Route
- gravity + flotation
- Sample
- Master Composite MC1 (Locked Cycle Test)
Recovery
- Recovery
- 91 %
- Recovery Basis
- actual_test
- Head Grade
- 37
- Head Grade Unit
- g/t
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-17T00:00:00.000Z
Reasoning: Locked-cycle results validate the open-circuit results with >91% recovery.
Positive factors
- Confirmed high recovery in locked-cycle testing
Evidence · text
“Over 91% recovery of both gold and silver demonstrated in locked-cycle testing.”
gravity plus rougher flotationgoldRecovery: 68 %View all detailsHide details
Identity
- Commodity
- gold
- Ticker
- TDG
Test Work
- Program Status
- detailed
- Test Type
- gravity plus rougher flotation
- Sample
- Baker TSF (Tailings) samples
Recovery
- Recovery
- 68 %
- Recovery Basis
- actual_test
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-17T00:00:00.000Z
Reasoning: 68% recovery is significantly lower than the main Shasta deposit results.
Negative factors
- Lower recoveries compared to Shasta composites
Evidence · text
“On average, 68% of the gold and 61% of the silver were recovered to combined gravity plus rougher flotation concentrates.”
gravity plus rougher flotationsilverRecovery: 61 %View all detailsHide details
Identity
- Commodity
- silver
- Ticker
- TDG
Test Work
- Program Status
- detailed
- Test Type
- gravity plus rougher flotation
- Sample
- Baker TSF (Tailings) samples
Recovery
- Recovery
- 61 %
- Recovery Basis
- actual_test
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-17T00:00:00.000Z
Reasoning: 61% silver recovery is lower than the main Shasta deposit results.
Negative factors
- Lower recoveries compared to Shasta composites
Evidence · text
“On average, 68% of the gold and 61% of the silver were recovered to combined gravity plus rougher flotation concentrates.”
gravity plus rougher flotationgoldRecovery: 83.8 %View all detailsHide details
Identity
- Commodity
- gold
- Ticker
- TDG
Test Work
- Program Status
- preliminary
- Test Type
- gravity plus rougher flotation
- Sample
- METS Prospect composite
Recovery
- Recovery
- 83.8 %
- Recovery Basis
- actual_test
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-17T00:00:00.000Z
Reasoning: 83.8% is decent for a preliminary test but below the main project average.
Positive factors
- Acceptable recovery for a preliminary test
Negative factors
- Requires optimization
Evidence · text
“A preliminary metallurgical test was conducted on the METS sample, which recovered 83.8% of the gold and 71.8% of the silver”
gravity plus rougher flotationsilverRecovery: 71.8 %View all detailsHide details
Identity
- Commodity
- silver
- Ticker
- TDG
Test Work
- Program Status
- preliminary
- Test Type
- gravity plus rougher flotation
- Sample
- METS Prospect composite
Recovery
- Recovery
- 71.8 %
- Recovery Basis
- actual_test
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-17T00:00:00.000Z
Reasoning: 71.8% silver recovery is moderate for a preliminary test.
Negative factors
- Requires optimization
Evidence · text
“A preliminary metallurgical test was conducted on the METS sample, which recovered 83.8% of the gold and 71.8% of the silver”
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.