Mammoth Announces Gold Recoveries of up to 90% from Bottle Roll Tests on Material from Large Carneritos Area on its Tenoriba Gold-Silver Property, Mexico
Original announcement by tmx on
- Company
- Mammoth Resources Corp.
- Ticker
- MTH
- Exchange
- TSX
- Region
- Chihuahua State, Mexico
- Primary commodity
- Gold
- Secondary commodities
- Silver
- Document categories
- Metallurgy
- Extracted
- 2026-09-18 11:15:29 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Mammoth Resources Corp. announced successful cyanide bottle roll test results from its Tenoriba Gold-Silver Property in Mexico. Gold recoveries reached up to 94.7% for oxidized material and 74.7% for mixed oxidized-sulfide/transition material, with silver recoveries up to 58.9%. The rapid dissolution kinetics support the potential for low-cost heap leach processing.
Reasoning: Strong metallurgical results from bottle roll tests on oxidized and mixed material, supporting the potential for heap leach processing at the Tenoriba property.
Positive factors
- High gold recoveries (>90% for oxidized material)
- Rapid dissolution kinetics (majority within 12 hours)
- Potential for low-cost heap leach technology
- QA/QC disclosed with SGS laboratory and QP sign-off
Facts used in scoring: 6
Classification and evidence
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: Gold recoveries reached up to 94.7% in oxidized samples.
Evidence · text
“Gold recoveries in two bottle roll tests are greater than 90% for the oxidized material samples”
Heap Leach Routeneutral
Processing via heap leach — lower CAPEX and OPEX, lower recovery expected.
Why it applies: The release explicitly discusses the potential for heap leach technology.
Evidence · text
“bodes well for potential gold-silver recoveries by low-cost, heap leach technology”
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 SGS laboratory, check assays, and QP sign-off by Richard Simpson.
Evidence · text
“SGS lab QA/QC procedures were performed which includes check assays for gold and silver.”
Bench Scale Onlynegative
Only preliminary bench tests completed — no locked-cycle or pilot work.
Why it applies: Results are from bottle roll tests, which are preliminary screening-level tests.
Evidence · text
“results from bottle roll tests performed on three composite samples”
Single Domain Onlynegative
Testing limited to one composite or domain — representativeness not established.
Why it applies: only one composite was tested
Extracted facts
Stored fact records: 6. Some facts used in scoring do not have a stored record.
Metallurgical Results (6)
bottle rollTenoriba · goldRecovery: 74.7 %View all detailsHide details
Identity
- Project
- Tenoriba
- Commodity
- gold
- Region
- mexico
- Reported Region
- Chihuahua State, Mexico
- Ticker
- MTH
Test Work
- Program Status
- preliminary
- Test Type
- bottle roll
- Processing Route
- cyanide bottle roll
- Sample
- Sample A mixed oxidized-sulfide/transition zone composite
Recovery
- Recovery
- 74.7 %
- Recovery Basis
- actual_test
Lab
- Laboratory
- SGS
- Consultant
- German Alarcon
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2023-11-09T00:00:00.000Z
Reasoning: Solid recovery for a mixed/transition zone sample, though lower than pure oxidized material.
Positive factors
- Rapid dissolution in first 12 hours
Negative factors
- Lower recovery compared to oxidized samples
Evidence · table
“74.7”
Context: 96
Tags used in scoring
Low Recoverynegative
Recovery below the weak band for the commodity and processing route.
Why it applies: 74.7% is below the weak band (80%)
bottle rollTenoriba · silverRecovery: 64.1 %View all detailsHide details
Identity
- Project
- Tenoriba
- Commodity
- silver
- Region
- mexico
- Reported Region
- Chihuahua State, Mexico
- Ticker
- MTH
Test Work
- Program Status
- preliminary
- Test Type
- bottle roll
- Processing Route
- cyanide bottle roll
- Sample
- Sample A mixed oxidized-sulfide/transition zone composite
Recovery
- Recovery
- 64.1 %
- Recovery Basis
- actual_test
Lab
- Laboratory
- SGS
- Consultant
- German Alarcon
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2023-11-09T00:00:00.000Z
Reasoning: Good silver recovery for the mixed zone sample.
Positive factors
- Strong silver recovery in mixed zone
Evidence · table
“64.1”
Context: 96
Tags used in scoring
Low Recoverynegative
Recovery below the weak band for the commodity and processing route.
Why it applies: 64.1% is below the weak band (75%)
bottle rollTenoriba · goldRecovery: 94 %View all detailsHide details
Identity
- Project
- Tenoriba
- Commodity
- gold
- Region
- mexico
- Reported Region
- Chihuahua State, Mexico
- Ticker
- MTH
Test Work
- Program Status
- preliminary
- Test Type
- bottle roll
- Processing Route
- cyanide bottle roll
- Sample
- Sample B oxidized composite
Recovery
- Recovery
- 94 %
- Recovery Basis
- actual_test
Lab
- Laboratory
- SGS
- Consultant
- German Alarcon
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2023-11-09T00:00:00.000Z
Reasoning: Very high gold recovery in oxidized material.
Positive factors
- Exceptional gold recovery
Evidence · table
“94.0”
Context: 96
bottle rollTenoriba · silverRecovery: 58.8 %View all detailsHide details
Identity
- Project
- Tenoriba
- Commodity
- silver
- Region
- mexico
- Reported Region
- Chihuahua State, Mexico
- Ticker
- MTH
Test Work
- Program Status
- preliminary
- Test Type
- bottle roll
- Processing Route
- cyanide bottle roll
- Sample
- Sample B oxidized composite
Recovery
- Recovery
- 58.8 %
- Recovery Basis
- actual_test
Lab
- Laboratory
- SGS
- Consultant
- German Alarcon
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2023-11-09T00:00:00.000Z
Reasoning: Moderate silver recovery in oxidized material.
Evidence · table
“58.8”
Context: 96
Tags used in scoring
Low Recoverynegative
Recovery below the weak band for the commodity and processing route.
Why it applies: 58.8% is below the weak band (75%)
bottle rollTenoriba · goldRecovery: 91.1 %View all detailsHide details
Identity
- Project
- Tenoriba
- Commodity
- gold
- Region
- mexico
- Reported Region
- Chihuahua State, Mexico
- Ticker
- MTH
Test Work
- Program Status
- preliminary
- Test Type
- bottle roll
- Processing Route
- cyanide bottle roll
- Sample
- Sample C oxidized composite
Recovery
- Recovery
- 91.1 %
- Recovery Basis
- actual_test
Lab
- Laboratory
- SGS
- Consultant
- German Alarcon
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2023-11-09T00:00:00.000Z
Reasoning: Very high gold recovery in oxidized material.
Positive factors
- Exceptional gold recovery
Evidence · table
“91.1”
Context: 96
bottle rollTenoriba · silverRecovery: 58.9 %View all detailsHide details
Identity
- Project
- Tenoriba
- Commodity
- silver
- Region
- mexico
- Reported Region
- Chihuahua State, Mexico
- Ticker
- MTH
Test Work
- Program Status
- preliminary
- Test Type
- bottle roll
- Processing Route
- cyanide bottle roll
- Sample
- Sample C oxidized composite
Recovery
- Recovery
- 58.9 %
- Recovery Basis
- actual_test
Lab
- Laboratory
- SGS
- Consultant
- German Alarcon
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2023-11-09T00:00:00.000Z
Reasoning: Moderate silver recovery in oxidized material.
Evidence · table
“58.9”
Context: 96
Tags used in scoring
Low Recoverynegative
Recovery below the weak band for the commodity and processing route.
Why it applies: 58.9% 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.