Altamira Gold Intersects High Grade Gold Mineralization within the Cajueiro Mineral Resource and Commences Drilling at the Untested Mombaque and Guillermo Porphyry Targets, Brazil
Original announcement by tmx on
- Company
- Altamira Gold Corp.
- Ticker
- ALTA
- Exchange
- TSX
- Region
- Mato Grosso, Brazil
- Primary commodity
- Gold
- Secondary commodities
- None reported
- Document categories
- Drill results, Resource update
- Extracted
- 2026-09-13 11:15:17 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Altamira Gold reported high-grade gold drill results from the Cajueiro Central project in Brazil, including a 0.7m @ 19.0 g/t Au intercept. The results confirm mineralization extends beyond current resource boundaries and the company has commenced drilling at two new porphyry targets, Mombaque and Guillermo.
Reasoning: Successful resource extension drilling with a bonanza-grade intercept (19.0 g/t Au) and expansion into new porphyry targets.
Positive factors
- High-grade intercept of 19.0 g/t Au
- Mineralization confirmed outside existing resource boundaries
- Step-out drilling successful at Cajueiro Central
- Commencement of drilling at new porphyry targets
Negative factors
- Narrow widths on some high-grade intercepts
Facts used in scoring: 9
Classification and evidence
Bonanza Interceptpositive
Exceptionally high-grade zone, well above the deposit-type norm.
Why it applies: 0.7m @ 19.0 g/t gold is exceptionally high grade for the sector.
Evidence · text
“0.7m @ 19.0g/t gold”
Step-Out Extensionpositive
Mineralization extended beyond the previously known limit.
Why it applies: CJO 114 was drilled outside the current resource and confirmed mineralization.
Evidence · text
“Hole CJO 114, drilled outside the current resource... confirming that mineralization extends beyond the existing resource boundaries.”
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: Release details laboratory (SGS Geosol), assay methods (50g fire assay, ICP), and QA/QC protocols (blanks, standards, duplicates).
Evidence · text
“For all drilling, half core is submitted to SGS Geosol... Quality control of drillhole assays follows normal industry procedures of inserting control samples randomly”
Extracted facts
Stored fact records: 9. Some facts used in scoring do not have a stored record.
Drill Results (5)
CJO 114Cajueiro Central · goldGrade: 1.02Grade Unit: g/tIntercept: 7.5 mView all detailsHide details
Identity
- Hole ID
- CJO 114
- Project
- Cajueiro Central
- Commodity
- gold
- Region
- brazil
- Reported Region
- brazil
- Ticker
- ALTA
Geometry
- Grade
- 1.02
- Grade Unit
- g/t
- Intercept
- 7.5 m
- From
- 1.9 m
- To
- 9.4 m
- Intercept Depth
- 1.9 m
Classification
- Program
- resource
- Sample Type
- drill
- Group ID
- CJO 114:1.9-9.4
QA/QC
- QA/QC Disclosed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-01-28T00:00:00.000Z
Reasoning: Resource extension intercept confirming continuity outside the current resource.
Positive factors
- Extends mineralization beyond existing resource
Evidence · text
“Hole CJO 114, drilled outside the current resource, returned 7.5m @ 1.02g/t gold from 1.9m depth”
Tags used in scoring
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
CJO 114Cajueiro Central · goldGrade: 1.46Grade Unit: g/tIntercept: 5 mView all detailsHide details
Identity
- Hole ID
- CJO 114
- Project
- Cajueiro Central
- Commodity
- gold
- Region
- brazil
- Reported Region
- brazil
- Ticker
- ALTA
Geometry
- Grade
- 1.46
- Grade Unit
- g/t
- Intercept
- 5 m
- From
- 112 m
- To
- 117 m
- Intercept Depth
- 1.9 m
Classification
- Program
- resource
- Sample Type
- drill
- Group ID
- CJO 114:112-117
QA/QC
- QA/QC Disclosed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-01-28T00:00:00.000Z
Reasoning: Secondary intercept in a resource extension hole.
Evidence · text
“5m @ 1.46g/t gold from 112m depth”
Tags used in scoring
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
CJO 117Cajueiro Central · goldGrade: 6.1Grade Unit: g/tIntercept: 2.3 mView all detailsHide details
Identity
- Hole ID
- CJO 117
- Project
- Cajueiro Central
- Commodity
- gold
- Region
- brazil
- Reported Region
- brazil
- Ticker
- ALTA
Geometry
- Grade
- 6.1
- Grade Unit
- g/t
- Intercept
- 2.3 m
- From
- 34 m
- To
- 36.3 m
- Intercept Depth
- 34 m
Classification
- Program
- resource
- Sample Type
- drill
- Group ID
- CJO 117:34-36.3
QA/QC
- QA/QC Disclosed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-01-28T00:00:00.000Z
Reasoning: Strong grade intercept within the existing resource area.
Positive factors
- High grade within resource
Negative factors
- Narrow width
Evidence · text
“2.3m @ 6.1g/t gold from 34m”
Tags used in scoring
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
CJO 117Cajueiro Central · goldGrade: 1.7Grade Unit: g/tIntercept: 2.9 mView all detailsHide details
Identity
- Hole ID
- CJO 117
- Project
- Cajueiro Central
- Commodity
- gold
- Region
- brazil
- Reported Region
- brazil
- Ticker
- ALTA
Geometry
- Grade
- 1.7
- Grade Unit
- g/t
- Intercept
- 2.9 m
- From
- 78 m
- To
- 80.9 m
- Intercept Depth
- 34 m
Classification
- Program
- resource
- Sample Type
- drill
- Group ID
- CJO 117:78-80.9
QA/QC
- QA/QC Disclosed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-01-28T00:00:00.000Z
Reasoning: Lower grade intercept in the same hole.
Evidence · text
“2.9m @ 1.7 g/t from 78m depth”
Tags used in scoring
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
CJO 117Cajueiro Central · goldGrade: 19Grade Unit: g/tIntercept: 0.7 mView all detailsHide details
Identity
- Hole ID
- CJO 117
- Project
- Cajueiro Central
- Commodity
- gold
- Region
- brazil
- Reported Region
- brazil
- Ticker
- ALTA
Geometry
- Grade
- 19
- Grade Unit
- g/t
- Intercept
- 0.7 m
- From
- 34.9 m
- To
- 35.6 m
- Intercept Depth
- 34 m
Classification
- Program
- resource
- Sample Type
- drill
- Group ID
- CJO 117:34.9-35.6
QA/QC
- QA/QC Disclosed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-01-28T00:00:00.000Z
Reasoning: Exceptional high-grade intercept representing the highest grade reported to date in the sector.
Positive factors
- Bonanza grade intercept
Negative factors
- Very narrow width
Evidence · text
“0.7m @ 19g/t gold in CJO117 (34.9-35.6m)”
Tags used in scoring
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: qaqc_disclosed is true
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
Resource Estimates (4)
indicatedCajueiro Central · goldTonnes: 5660000Grade: 1.02Grade Unit: g/tContained Metal: 185000Contained Unit: ozView all detailsHide details
Identity
- Project
- Cajueiro Central
- Commodity
- gold
- Region
- brazil
- Reported Region
- Mato Grosso, Brazil
- Ticker
- ALTA
Resource scope
- Estimate type
- resource
- Reporting standards
- ni_43_101
- Resource group id
- resource:01f95900f560fea24847
- Deposit or zone
- Cajueiro Central
- Material type
- saprolite
- Resource basis
- attributable
Resource Data
- Category
- indicated
- Tonnes
- 5660000
- Grade
- 1.02
- Grade Unit
- g/t
- Contained Metal
- 185000
- Contained Unit
- oz
Prior Estimate
- Resource Date
- 2019-10-10
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-01-28T00:00:00.000Z
Reasoning: Existing Indicated resource component.
Evidence · text
“5.66Mt @ 1.02 g/t gold for a total of 185,000 oz in the Indicated Resource category”
Tags used in scoring
Indicated Resourcepositive
Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.
Why it applies: category is "indicated"
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
NI 43-101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: reporting_standards includes ni_43_101
Stale Estimatenegative
Effective date is >2 years old — data currency concern, may not reflect current geological understanding.
Why it applies: effective date is 6.3 years before this release
inferredCajueiro Central · goldTonnes: 12660000Grade: 1.26Grade Unit: g/tContained Metal: 515000Contained Unit: ozView all detailsHide details
Identity
- Project
- Cajueiro Central
- Commodity
- gold
- Region
- brazil
- Reported Region
- Mato Grosso, Brazil
- Ticker
- ALTA
Resource scope
- Estimate type
- resource
- Reporting standards
- ni_43_101
- Resource group id
- resource:c5afcf2f792bf24a8bf3
- Deposit or zone
- Cajueiro Central
- Material type
- saprolite
- Resource basis
- attributable
Resource Data
- Category
- inferred
- Tonnes
- 12660000
- Grade
- 1.26
- Grade Unit
- g/t
- Contained Metal
- 515000
- Contained Unit
- oz
Prior Estimate
- Resource Date
- 2019-10-10
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-01-28T00:00:00.000Z
Reasoning: Existing Inferred resource component.
Evidence · text
“12.66Mt @ 1.26 g/t gold for a total of 515,000oz in the Inferred Resource category”
Tags used in scoring
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: category is "inferred"
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
NI 43-101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: reporting_standards includes ni_43_101
Stale Estimatenegative
Effective date is >2 years old — data currency concern, may not reflect current geological understanding.
Why it applies: effective date is 6.3 years before this release
indicatedMaria Bonita · goldTonnes: 24190000Grade: 0.46Grade Unit: g/tContained Metal: 357800Contained Unit: ozView all detailsHide details
Identity
- Project
- Maria Bonita
- Commodity
- gold
- Region
- brazil
- Reported Region
- Mato Grosso, Brazil
- Ticker
- ALTA
Resource scope
- Estimate type
- resource
- Reporting standards
- ni_43_101
- Resource group id
- resource:0e91acbb7169a1fd35f7
- Deposit or zone
- Maria Bonita
- Material type
- saprolite
- Resource basis
- attributable
Resource Data
- Category
- indicated
- Tonnes
- 24190000
- Grade
- 0.46
- Grade Unit
- g/t
- Contained Metal
- 357800
- Contained Unit
- oz
Prior Estimate
- Resource Date
- 2025-06-12
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-01-28T00:00:00.000Z
Reasoning: Existing Indicated resource component.
Evidence · text
“Indicated Resources of 24.19Mt @ 0.46g/t gold (for a total of 357,800oz)”
Tags used in scoring
Indicated Resourcepositive
Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.
Why it applies: category is "indicated"
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
NI 43-101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: reporting_standards includes ni_43_101
inferredMaria Bonita · goldTonnes: 25640000Grade: 0.44Grade Unit: g/tContained Metal: 362400Contained Unit: ozView all detailsHide details
Identity
- Project
- Maria Bonita
- Commodity
- gold
- Region
- brazil
- Reported Region
- Mato Grosso, Brazil
- Ticker
- ALTA
Resource scope
- Estimate type
- resource
- Reporting standards
- ni_43_101
- Resource group id
- resource:99e02b2efec844f257dc
- Deposit or zone
- Maria Bonita
- Material type
- saprolite
- Resource basis
- attributable
Resource Data
- Category
- inferred
- Tonnes
- 25640000
- Grade
- 0.44
- Grade Unit
- g/t
- Contained Metal
- 362400
- Contained Unit
- oz
Prior Estimate
- Resource Date
- 2025-06-12
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-01-28T00:00:00.000Z
Reasoning: Existing Inferred resource component.
Evidence · text
“Inferred Resources of 25.64Mt @ 0.44g/t gold (for a total of 362,400oz)”
Tags used in scoring
Inferred Resourcenegative
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Why it applies: category is "inferred"
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
NI 43-101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: reporting_standards includes ni_43_101
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.