Compass Reports Strong Gold Recoveries from Recent Metallurgical Testing at Massala
Original announcement by tmx on
- Company
- Compass Gold Corp.
- Ticker
- CVB
- Exchange
- TSX
- Region
- Southern Mali
- Primary commodity
- Gold
- Secondary commodities
- Mercury, Lead, Antimony, Tellurium, Bismuth, Arsenic
- Document categories
- Metallurgy, Drill results, Other
- Extracted
- 2026-09-15 18:45:57 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Compass Gold Corp. reported robust metallurgical results at the Massala prospect, including a 95.3% gold recovery via bottle roll leaching on sample MA-5. The company also announced the completion of Phase 1 resource definition drilling, which included high-grade visible gold intercepts.
Reasoning: Strong metallurgical recoveries and completion of a major drilling phase significantly de-risk the project's path to production.
Positive factors
- High gold recovery (95.3%) achieved via bottle roll leaching
- Gold characterized as free-milling and straightforward to process
- Completion of Phase 1 drilling program on schedule
- Presence of high-grade visible gold (>100 g/t Au)
Negative factors
- Presence of potential deleterious elements (arsenic, mercury, etc.) noted
Facts used in scoring: 3
Classification and evidence
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: 95.3% gold recovery achieved via bottle roll leaching is exceptional.
Evidence · text
“A final gold recovery of 95.3% was achieved on sample MA-5”
Free Millingpositive
Simple, clean ore amenable to standard processing without oxidation.
Why it applies: Gold is characterized as free-milling, suggesting simple processing.
Evidence · text
“gold content is characterized as moderate-to-fine-grained and free-milling”
Deleterious Elements Presentnegative
A source-stated penalty, refractory or recovery concern in the fact's scope. Element detection alone, including measured elements explicitly below penalty thresholds, does not trigger this tag. Respect negation and retain a separately stated concern even when another risk is explicitly absent.
Why it applies: Release mentions potential deleterious elements like mercury, lead, and arsenic.
Evidence · text
“All samples contain low concentrations of potential deleterious elements (e.g., mercury, lead, antimony, tellurium, and bismuth)”
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: 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)
EGRGMassala · goldRecovery: 51.1 %Head Grade: 0.65Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Massala
- Commodity
- gold
- Region
- mali
- Reported Region
- Southern Mali
- Ticker
- CVB
Test Work
- Program Status
- preliminary
- Test Type
- EGRG
- Processing Route
- gravity
- Sample
- MA-1 Massala Main vein
Recovery
- Recovery
- 51.1 %
- Recovery Basis
- unspecified
- Head Grade
- 0.65
- Head Grade Unit
- g/t
Lab
- Laboratory
- Blue Coast Research
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-01T00:00:00.000Z
Reasoning: Moderate gravity recovery on low-grade sample.
Evidence · table
“51.1”
Context: 0.65
Tags used in scoring
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: 51.1% is below the weak band (80%)
EGRGMassala · goldRecovery: 61 %Head Grade: 2.24Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Massala
- Commodity
- gold
- Region
- mali
- Reported Region
- Southern Mali
- Ticker
- CVB
Test Work
- Program Status
- preliminary
- Test Type
- EGRG
- Processing Route
- gravity
- Sample
- MA-5 Massala Main vein
Recovery
- Recovery
- 61 %
- Recovery Basis
- unspecified
- Head Grade
- 2.24
- Head Grade Unit
- g/t
Lab
- Laboratory
- Blue Coast Research
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-01T00:00:00.000Z
Reasoning: Strong gravity recovery on a higher-grade sample.
Evidence · table
“61.0”
Context: 2.24
Tags used in scoring
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 (80%)
bottle rollMassala · goldRecovery: 95.3 %Head Grade: 2.24Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Massala
- Commodity
- gold
- Region
- mali
- Reported Region
- Southern Mali
- Ticker
- CVB
Test Work
- Program Status
- preliminary
- Test Type
- bottle roll
- Processing Route
- cyanide leach
- Sample
- MA-5 Massala Main vein
Recovery
- Recovery
- 95.3 %
- Recovery Basis
- actual_test
- Head Grade
- 2.24
- Head Grade Unit
- g/t
Lab
- Laboratory
- Blue Coast Research
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-06-01T00:00:00.000Z
Reasoning: Excellent cyanide leach recovery (95.3%) on sample MA-5.
Evidence · table
“95.3”
Context: 2.24
Tags used in scoring
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: 95.3% is at or above the exceptional band (95%)
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.