GGM: Sturec Metallurgical Tests Achieve up to 91.4% Gold Recovery
Original announcement by asx on
- Company
- Global Gold Mining
- Ticker
- GGM
- Exchange
- ASX
- Region
- Slovakia
- Primary commodity
- Gold
- Secondary commodities
- None reported
- Document categories
- Metallurgy
- Extracted
- 2026-09-22 23:07:05 UTC
Analysis by Minestarters Atlas
Atlas analysis published:
Minestarters Atlas analysis
Summary
Global Gold Mining announced highly encouraging metallurgical test results for its Sturec Gold deposit in Slovakia, achieving gold recoveries of up to 91.4% to flotation concentrate from Fresh and Channel composites. These results will inform the Pre-feasibility Study and support a simple flotation flowsheet. The testwork was conducted at ALS Metallurgy under the supervision of Mining One Consultants and is JORC compliant.
Reasoning: The metallurgical testwork achieved high gold recoveries of up to 91.4% to flotation concentrate for Fresh and Channel composites, supporting a simple flotation flowsheet for the Sturec Gold deposit. While the Transitional composite showed lower recovery due to partial oxidation, the overall results are highly encouraging for the project's PFS, demonstrating good metallurgical characteristics and de-risking future development.
Positive factors
- High Recovery
- Multi-Domain Tested
- Mill Route
- QP/CP Signed
- JORC Compliant
Negative factors
- Bench Scale Only
- Refractory Ore
- Recovery to concentrate, not final payable metal
Low confidence — this extraction should be reviewed alongside the original source.
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: Gold recoveries of 91.4% and 91.0% to flotation concentrate are at or above the exceptional band for the flotation processing route.
Evidence · text
“Fresh and Channel composite tests achieved gold recoveries to flotation concentrate of 91.4% and 91.0%, respectively”
Multi-Domain Testedpositive
Variability across ore domains (oxide, transition, fresh) has been addressed.
Why it applies: The testwork included Fresh, Transitional, and Channel composites, indicating variability across ore domains was addressed.
Evidence · text
“Three variability tests were conducted on the Fresh, Transitional and Channel composites using the selected test conditions.”
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: The processing route described is a flotation flowsheet, which is a type of mill route.
Evidence · text
“The results support further evaluation of a flotation flowsheet incorporating rougher-concentrate regrinding and two stages of cleaning”
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: Mr Louis Cohalan, a Member of the Australian Institute of Geoscientists and full-time employee of Mining One Consultants Pty Ltd, is named as the Competent Person responsible for the metallurgical testwork.
Evidence · text
“The information in this announcement that relates to Exploration Results and Metallurgical Testwork is based on, and fairly represents, information and supporting documentation compiled by Mr Louis Cohalan, who is a Member of the Australian Institute of Geoscientists. Mr Cohalan is a full-time employee of Mining One Consultants Pty Ltd. Mr Cohalan has sufficient experience relevant to the style of mineralisation and type of deposit under consideration, and to the activities being undertaken, to qualify as a Competent Person as defined in the 2012 Edition of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (the “JORC Code”).”
JORC Compliantpositive · Story-specific tag
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: The metallurgical testwork is reported in compliance with the 2012 Edition of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (the “JORC Code”).
Evidence · text
“to qualify as a Competent Person as defined in the 2012 Edition of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (the “JORC Code”).”
Bench Scale Onlynegative
Only preliminary bench tests completed — no locked-cycle or pilot work.
Why it applies: The testwork program describes sequential optimisation and variability tests on composites, without mention of pilot or demonstration plant scale operations.
Evidence · text
“The testwork program worked through a series of sequential optimisation tests on the Master composite, progressively trialling different test conditions to optimise concentrate grade and recovery.”
Refractory Orenegative
Ore requires oxidation/pressure treatment before recovery — a processing and recovery risk.
Why it applies: The Transitional composite, noted as partly oxidised, returned a lower recovery of 79.5%, suggesting some metallurgical complexity for this ore type.
Evidence · text
“The Transitional composite was partly oxidised and returned the lowest recovery of the three composites.”
Gravity Routeneutral
Gravity separation forms a material part of the flowsheet.
Why it applies: the document describes a gravity route ("gravity")
Extracted facts
Stored fact records: 3. Some facts used in scoring do not have a stored record.
Metallurgical Results (3)
flotationSturec Gold deposit · goldRecovery: 91.4 %Head Grade: 0.97Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Sturec Gold deposit
- Commodity
- gold
- Region
- slovakia
- Reported Region
- Slovakia
- Ticker
- GGM
Test Work
- Program Status
- preliminary
- Test Type
- flotation
- Processing Route
- flotation flowsheet incorporating rougher-concentrate regrinding and two stages of cleaning
- Sample
- Fresh composite
- Grind P80
- 75 µm
Recovery
- Recovery
- 91.4 %
- Recovery Basis
- to_concentrate
- Head Grade
- 0.97
- Head Grade Unit
- g/t
- Conc. Grade
- 20.2
- Conc. Grade Unit
- g/t
Lab
- Laboratory
- ALS Metallurgy
- Consultant
- Mining One Consultants
Location
- CRS
- WGS84 / UTM Zone 34N
- Loc. Confidence
- medium
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-22T00:00:00.000Z
Reasoning: The Fresh composite achieved a high gold recovery of 91.4% to flotation concentrate, which is an excellent result for this processing route and supports the project's economic viability at the PFS stage.
Positive factors
- High Recovery
- Mill Route
Negative factors
- Bench Scale Only
- Recovery to concentrate, not final payable metal
Evidence · table
“91.4”
Context: Fresh
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
flotationSturec Gold deposit · goldRecovery: 79.5 %Head Grade: 1.29Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Sturec Gold deposit
- Commodity
- gold
- Region
- slovakia
- Reported Region
- Slovakia
- Ticker
- GGM
Test Work
- Program Status
- preliminary
- Test Type
- flotation
- Processing Route
- flotation flowsheet incorporating rougher-concentrate regrinding and two stages of cleaning
- Sample
- Transitional composite
- Grind P80
- 75 µm
Recovery
- Recovery
- 79.5 %
- Recovery Basis
- to_concentrate
- Head Grade
- 1.29
- Head Grade Unit
- g/t
Lab
- Laboratory
- ALS Metallurgy
- Consultant
- Mining One Consultants
Location
- CRS
- WGS84 / UTM Zone 34N
- Loc. Confidence
- medium
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-22T00:00:00.000Z
Reasoning: The Transitional composite showed a lower gold recovery of 79.5% to flotation concentrate, attributed to its partly oxidised nature, indicating potential metallurgical complexity for this ore type.
Positive factors
- Mill Route
Negative factors
- Low Recovery
- Refractory Ore
- Bench Scale Only
- Recovery to concentrate, not final payable metal
Evidence · text
“Overall gold recoveries to flotation concentrate were 91.4%, 79.5% and 91.0%, respectively. The Fresh and Channel concentrates graded 20.2 g/t Au and 84.4 g/t Au. The Transitional composite was partly oxidised and returned the lowest recovery of the three composites.”
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
Low Recoverynegative
Recovery below the weak band for the commodity and processing route.
Why it applies: 79.5% is below the weak band (80%)
flotationSturec Gold deposit · goldRecovery: 91 %Head Grade: 2.89Head Grade Unit: g/tView all detailsHide details
Identity
- Project
- Sturec Gold deposit
- Commodity
- gold
- Region
- slovakia
- Reported Region
- Slovakia
- Ticker
- GGM
Test Work
- Program Status
- preliminary
- Test Type
- flotation
- Processing Route
- flotation flowsheet incorporating rougher-concentrate regrinding and two stages of cleaning
- Sample
- Channel composite
- Grind P80
- 75 µm
Recovery
- Recovery
- 91 %
- Recovery Basis
- to_concentrate
- Head Grade
- 2.89
- Head Grade Unit
- g/t
- Conc. Grade
- 84.4
- Conc. Grade Unit
- g/t
Lab
- Laboratory
- ALS Metallurgy
- Consultant
- Mining One Consultants
Location
- CRS
- WGS84 / UTM Zone 34N
- Loc. Confidence
- medium
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-09-22T00:00:00.000Z
Reasoning: The Channel composite achieved a high gold recovery of 91.0% to flotation concentrate, demonstrating excellent metallurgical response for this material type and supporting the project's development.
Positive factors
- High Recovery
- Mill Route
Negative factors
- Bench Scale Only
- Recovery to concentrate, not final payable metal
Evidence · table
“91.0”
Context: Channel
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
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.