Mammoth Announces Gold Recoveries Of 87% From Bottle Roll Tests On Coarser-Fraction Material From The 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 11:01:52 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Mammoth Resources Corp. announced successful gold (87%) and silver (67%) recoveries from bottle roll tests on a coarse-grained (-10 mesh) oxidized composite sample from the Carneritos area of the Tenoriba project. The results, achieved with low cyanide consumption, support the potential for future heap leach processing of near-surface material.
Reasoning: The release reports strong gold and silver recoveries from a significantly coarser fraction of material, which is a positive indicator for future heap leach processing.
Positive factors
- High gold recovery (87%) on coarse fraction
- Favourable comparison to fine-fraction testing
- Low cyanide consumption (0.2 kg/t)
- QA/QC and QP sign-off disclosed
Negative factors
- Higher end of average CaO consumption (3.8 kg/t)
Facts used in scoring: 2
Classification and evidence
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: Gold recovery of 87% is in the strong/exceptional band for gold cyanide leach.
Evidence · text
“Gold dissolution recovery... is 87%”
Free Millingpositive
Simple, clean ore amenable to standard processing without oxidation.
Why it applies: Material is described as oxidized near-surface material with favourable leaching kinetics.
Evidence · text
“oxidized near-surface gold-silver mineralized material”
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 names a Qualified Person (Richard Simpson) and a metallurgical QP (German Alarcon) and mentions SGS laboratory.
Evidence · text
“supervised by German Alarcon, SGS de Mexico S.A de C.V metallurgist and a qualified person.”
Heap Leach Routeneutral
Processing via heap leach — lower CAPEX and OPEX, lower recovery expected.
Why it applies: The company explicitly discusses the results in the context of future heap leach testing.
Evidence · text
“bode well for the ability to recover gold and silver through heap leach processing”
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: 2. Some facts used in scoring do not have a stored record.
Metallurgical Results (2)
bottle rollTenoriba · goldRecovery: 87 %Head Grade: 0.65Head Grade Unit: g/t AuEqView 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
- coarser fraction composite sample of oxidized near-surface gold-silver mineralized material (-10 mesh)
Recovery
- Recovery
- 87 %
- Recovery Basis
- actual_test
- Head Grade
- 0.65
- Head Grade Unit
- g/t AuEq
Reagents
- Cyanide
- 0.2 kg/t
- Lime
- 3.8 kg/t
- Reagent Notes
- CaO consumption (3.8 kg/t) is considered on the higher end of average.
Lab
- Laboratory
- SGS Laboratory
- Consultant
- SGS de Mexico S.A de C.V
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-02-05T00:00:00.000Z
Reasoning: Strong gold recovery on coarse material is a key de-risking step for heap leach.
Positive factors
- 87% recovery on coarse fraction
Negative factors
- High CaO consumption
Evidence · text
“Gold dissolution recovery... is 87%”
bottle rollTenoriba · silverRecovery: 67 %Head Grade: 0.65Head Grade Unit: g/t AuEqView 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
- coarser fraction composite sample of oxidized near-surface gold-silver mineralized material (-10 mesh)
Recovery
- Recovery
- 67 %
- Recovery Basis
- actual_test
- Head Grade
- 0.65
- Head Grade Unit
- g/t AuEq
Reagents
- Cyanide
- 0.2 kg/t
- Lime
- 3.8 kg/t
- Reagent Notes
- CaO consumption (3.8 kg/t) is considered on the higher end of average.
Lab
- Laboratory
- SGS Laboratory
- Consultant
- SGS de Mexico S.A de C.V
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-02-05T00:00:00.000Z
Reasoning: Silver recovery is consistent with previous fine-fraction testing.
Positive factors
- 67% silver recovery
Evidence · text
“silver recovery is 67%”
Tags used in scoring
Low Recoverynegative
Recovery below the weak band for the commodity and processing route.
Why it applies: 67% 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.