CHESAPEAKE ANNOUNCES PROPRIETARY HEAP OXIDATION TECHNOLOGY UPDATES
Original announcement by prospectors_exchange on
- Company
- Chesapeake Gold Corp.
- Ticker
- CKG
- Exchange
- Unavailable
- Region
- Durango, Mexico
- Primary commodity
- Gold
- Secondary commodities
- Silver
- Document categories
- Metallurgy
- Extracted
- 2026-09-24 12:58:55 UTC
Analysis by Minestarters Atlas
Atlas analysis published:
Minestarters Atlas analysis
Summary
Chesapeake Gold Corp. reported progress in its proprietary heap oxidation technology at the Metates project, showing improved gold and silver recoveries within shorter oxidation cycles. The update also highlights the potential benefits of HPGR crushing to increase baseline recoveries prior to heap oxidation.
Reasoning: Significant metallurgical improvements in recovery and oxidation time for the primary project, supporting upcoming PFS.
Positive factors
- Improved gold and silver recoveries in reduced oxidation time
- HPGR crushing shows significant recovery uplift
- Variability program demonstrates scalability and domain coverage
Negative factors
- Commercialization of proprietary technology is still in testing phase
- PFS timing is contingent on San Vicente 3 concession recovery
Facts used in scoring: 6
Classification and evidence
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: The technology involves heap oxidation and HPGR crushing, which are part of a mill/concentrator-style processing flowsheet for sulphide ores.
Evidence · text
“proprietary heap oxidation technology”
QP/CP Signedpositive · Story-specific tag
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: Dr. Art Ibrado is named as the independent qualified person responsible for the metallurgical technical information.
Evidence · text
“Dr. Art Ibrado, P.E., of Fort Lowell Consulting PLLC, is the independent, qualified person responsible”
Heap Leach Routeneutral
Processing via heap leach — lower CAPEX and OPEX, lower recovery expected.
Why it applies: the document describes a heap_leach route ("heap leach")
Multi-Domain Testedpositive
Variability across ore domains (oxide, transition, fresh) has been addressed.
Why it applies: 2 distinct composites were tested
Extracted facts
Stored fact records: 6. Some facts used in scoring do not have a stored record.
Metallurgical Results (6)
heap leachMetates · goldRecovery: 70 %View all detailsHide details
Identity
- Project
- Metates
- Commodity
- gold
- Region
- mexico
- Reported Region
- Durango, Mexico
- Ticker
- CKG
Test Work
- Program Status
- detailed
- Test Type
- heap leach
- Processing Route
- heap oxidation
- Sample
- Massive Intrusive domain, Phase III variability testwork
- Leach Time
- 2160 hours
Recovery
- Recovery
- 70 %
- Recovery Basis
- actual_test
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-22T00:00:00.000Z
Reasoning: Strong recovery in a shortened oxidation cycle for the main ore domain.
Positive factors
- Achieved in 90 days vs 180/240 days previously
Evidence · text
“precious metal recoveries achieving 70% for gold and 61% for silver over the shortened 90-day oxidation phase”
Tags used in scoring
Heap Leach Routeneutral
Processing via heap leach — lower CAPEX and OPEX, lower recovery expected.
Why it applies: processing_route matches the heap_leach signal
heap leachMetates · silverRecovery: 61 %View all detailsHide details
Identity
- Project
- Metates
- Commodity
- silver
- Region
- mexico
- Reported Region
- Durango, Mexico
- Ticker
- CKG
Test Work
- Program Status
- detailed
- Test Type
- heap leach
- Processing Route
- heap oxidation
- Sample
- Massive Intrusive domain, Phase III variability testwork
- Leach Time
- 2160 hours
Recovery
- Recovery
- 61 %
- Recovery Basis
- actual_test
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-22T00:00:00.000Z
Reasoning: Significant improvement in silver recovery within a reduced timeframe.
Positive factors
- Silver recoveries doubled compared to Phase I
Evidence · text
“precious metal recoveries achieving 70% for gold and 61% for silver over the shortened 90-day oxidation phase”
Tags used in scoring
Heap Leach Routeneutral
Processing via heap leach — lower CAPEX and OPEX, lower recovery expected.
Why it applies: processing_route matches the heap_leach signal
Low Recoverynegative
Recovery below the weak band for the commodity and processing route.
Why it applies: 61% is below the weak band (75%)
heap leachMetates · goldRecovery: 57 %View all detailsHide details
Identity
- Project
- Metates
- Commodity
- gold
- Region
- mexico
- Reported Region
- Durango, Mexico
- Ticker
- CKG
Test Work
- Program Status
- detailed
- Test Type
- heap leach
- Processing Route
- heap oxidation
- Sample
- Intrusive Breccia domain, Phase III variability testwork
- Leach Time
- 4320 hours
Recovery
- Recovery
- 57 %
- Recovery Basis
- actual_test
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-22T00:00:00.000Z
Reasoning: Improved recovery for the secondary domain over a 180-day cycle.
Positive factors
- Recoveries nearly doubled compared to Phase I
Evidence · text
“precious metal recoveries increasing to 57% for gold and 60% for silver over a similar 180-day oxidation phase”
Tags used in scoring
Heap Leach Routeneutral
Processing via heap leach — lower CAPEX and OPEX, lower recovery expected.
Why it applies: processing_route matches the heap_leach signal
heap leachMetates · silverRecovery: 60 %View all detailsHide details
Identity
- Project
- Metates
- Commodity
- silver
- Region
- mexico
- Reported Region
- Durango, Mexico
- Ticker
- CKG
Test Work
- Program Status
- detailed
- Test Type
- heap leach
- Processing Route
- heap oxidation
- Sample
- Intrusive Breccia domain, Phase III variability testwork
- Leach Time
- 4320 hours
Recovery
- Recovery
- 60 %
- Recovery Basis
- actual_test
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-22T00:00:00.000Z
Reasoning: Improved silver recovery for the secondary domain.
Positive factors
- Recoveries nearly doubled compared to Phase I
Evidence · text
“precious metal recoveries increasing to 57% for gold and 60% for silver over a similar 180-day oxidation phase”
Tags used in scoring
Heap Leach Routeneutral
Processing via heap leach — lower CAPEX and OPEX, lower recovery expected.
Why it applies: processing_route matches the heap_leach signal
Low Recoverynegative
Recovery below the weak band for the commodity and processing route.
Why it applies: 60% is below the weak band (75%)
direct cyanidationMetates · goldRecovery: 47 %View all detailsHide details
Identity
- Project
- Metates
- Commodity
- gold
- Region
- mexico
- Reported Region
- Durango, Mexico
- Ticker
- CKG
Test Work
- Program Status
- preliminary
- Test Type
- direct cyanidation
- Processing Route
- HPGR crushing and direct cyanidation
- Sample
- Intrusive Breccia, HPGR-crushed material
Recovery
- Recovery
- 47 %
- Recovery Basis
- actual_test
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-22T00:00:00.000Z
Reasoning: HPGR shows significant potential to boost baseline recoveries.
Positive factors
- 16% increase in gold recovery compared to conventional crushing
Evidence · text
“gold and silver recoveries increasing by 16% and 23% to 47% and 65%, respectively”
Tags used in scoring
Low Recoverynegative
Recovery below the weak band for the commodity and processing route.
Why it applies: 47% is below the weak band (80%)
direct cyanidationMetates · silverRecovery: 65 %View all detailsHide details
Identity
- Project
- Metates
- Commodity
- silver
- Region
- mexico
- Reported Region
- Durango, Mexico
- Ticker
- CKG
Test Work
- Program Status
- preliminary
- Test Type
- direct cyanidation
- Processing Route
- HPGR crushing and direct cyanidation
- Sample
- Intrusive Breccia, HPGR-crushed material
Recovery
- Recovery
- 65 %
- Recovery Basis
- actual_test
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-22T00:00:00.000Z
Reasoning: HPGR shows significant potential to boost baseline recoveries.
Positive factors
- 23% increase in silver recovery compared to conventional crushing
Evidence · text
“gold and silver recoveries increasing by 16% and 23% to 47% and 65%, respectively”
Tags used in scoring
Low Recoverynegative
Recovery below the weak band for the commodity and processing route.
Why it applies: 65% 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.