Tiernan Gold Continues to Advance Volcan Pre-Feasibility Study and Initiates Environmental Baseline Program
Original announcement by jmn on
- Company
- Tiernan Gold Corp.
- Ticker
- TNGD
- Exchange
- TSXV
- Region
- Atacama Region, Chile
- Primary commodity
- Gold
- Secondary commodities
- Copper
- Document categories
- Other, Metallurgy, Permitting
- Extracted
- 2026-10-14 12:28:42 UTC
Analysis by Minestarters Atlas
Atlas analysis published:
Minestarters Atlas analysis
Summary
Tiernan Gold is advancing its Volcan Gold Project in Chile towards a Pre-Feasibility Study (PFS) expected in H1 2027. Key activities include a large-scale BLEG metallurgical campaign, HPGR crushing tests showing rapid gold dissolution, and the initiation of an environmental baseline program.
Reasoning: The company is making multi-disciplinary progress on its Volcan project, specifically advancing the PFS through metallurgical testing, geological re-logging, and environmental baseline work.
Positive factors
- Advancing towards PFS with updated geological understanding
- Encouraging early HPGR metallurgical kinetics
- Strong cash position of US$36.2 million
- Permits in hand for environmental baseline mobilization
Negative factors
- Metallurgical response varies materially across the deposit (42.3% to 92.8% cyanide-soluble gold)
Facts used in scoring: 3
Classification and evidence
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: The company is advancing towards CIC and SART processing routes.
Evidence · text
“process-design support for carbon-in-column ("CIC") and Sulphidization, Acidification, Recycling and Thickening ("SART")”
Resource Updateneutral · Story-specific tag
Revised estimate for an existing resource — compare to prior to assess progress.
Why it applies: The company is working toward an updated Mineral Resources Estimate (MRE) to be published in H1 2027.
Evidence · text
“building toward an updated Mineral Resources Estimate ("MRE") which the Company expects to publish alongside the Pre-Feasibility Study ("PFS")”
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: 3. Some facts used in scoring do not have a stored record.
Metallurgical Results (3)
leachVolcan Gold Project · goldRecovery: 42.3 %View all detailsHide details
Identity
- Project
- Volcan Gold Project
- Commodity
- gold
- Region
- chile
- Reported Region
- Atacama Region, Chile
- Ticker
- TNGD
Test Work
- Program Status
- preliminary
- Test Type
- leach
- Sample
- Phase 1 cyanide-soluble gold
Recovery
- Recovery
- 42.3 %
- Recovery Basis
- actual_test
Lab
- Laboratory
- SGS Canada Inc.
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-10-14T00:00:00.000Z
Reasoning: Represents the lower end of the reported cyanide-soluble gold range.
Negative factors
- Lower bound of soluble gold is relatively low at 42.3%
Evidence · text
“Phase I disclosed range of 42.3% to 92.8% cyanide-soluble gold”
Tags used in scoring
Low Recoverynegative
Recovery below the weak band for the commodity and processing route.
Why it applies: 42.3% is below the weak band (80%)
leachVolcan Gold Project · goldRecovery: 92.8 %View all detailsHide details
Identity
- Project
- Volcan Gold Project
- Commodity
- gold
- Region
- chile
- Reported Region
- Atacama Region, Chile
- Ticker
- TNGD
Test Work
- Program Status
- preliminary
- Test Type
- leach
- Sample
- Phase 1 cyanide-soluble gold
Recovery
- Recovery
- 92.8 %
- Recovery Basis
- actual_test
Lab
- Laboratory
- SGS Canada Inc.
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-10-14T00:00:00.000Z
Reasoning: Represents the upper end of the reported cyanide-soluble gold range.
Positive factors
- High end of soluble gold range is very strong
Evidence · text
“Phase I disclosed range of 42.3% to 92.8% cyanide-soluble gold”
bottle rollVolcan Gold Project · goldView all detailsHide details
Identity
- Project
- Volcan Gold Project
- Commodity
- gold
- Region
- chile
- Reported Region
- Atacama Region, Chile
- Ticker
- TNGD
Test Work
- Program Status
- preliminary
- Test Type
- bottle roll
- Sample
- HPGR-crushed coarse-ore bottle-roll results
Recovery
- Recovery Basis
- actual_test
Lab
- Laboratory
- SGS Canada Inc.
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-10-14T00:00:00.000Z
Reasoning: Early kinetics are encouraging for the preferred crushing method.
Positive factors
- Confirms rapid gold dissolution with HPGR crushing
Evidence · text
“confirms rapid gold dissolution and improved recovery across five tested composites”
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.