Altamira Gold Intersects 395.5m @ 0.4 g/t gold in First Deep Drill Hole at Maria Bonita, Expanding Mineralized System, Cajueiro District, 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 11:22:22 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Altamira Gold reported significant drill results from hole MBA032 at the Maria Bonita project, intersecting 395.5m at 0.4 g/t gold. This deep hole confirms the continuity of the quartz porphyry system below the existing mineral resource, suggesting a much larger mineralized system than previously estimated.
Reasoning: The first deep drill hole (MBA032) successfully intersected a very wide (395.5m) mineralized interval, demonstrating that the porphyry system extends significantly below the existing resource footprint.
Positive factors
- significant depth extension of mineralized porphyry
- remarkable continuity of mineralization
- expansion of known mineralized footprint
Facts used in scoring: 4
Classification and evidence
Step-Out Extensionpositive
Mineralization extended beyond the previously known limit.
Why it applies: MBA032 is the first deep hole below the existing resource, extending the mineralized system at depth.
Evidence · text
“first deep drill hole below the Maria Bonita porphyry gold mineral resource... significantly extends the size of the mineralized porphyry system”
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: The release mentions use of certified references, blanks, and SGS laboratory methods.
Evidence · text
“Analytical quality is monitored by certified references and blanks.”
NI 43-101 Compliantpositive
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: The resource estimate and technical information are prepared under NI 43-101 standards.
Evidence · text
“Qualified Person... as defined by National Instrument 43-101, supervised the preparation of the technical information”
Extracted facts
Stored fact records: 4. Some facts used in scoring do not have a stored record.
Drill Results (2)
MBA032Maria Bonita · goldGrade: 0.4Grade Unit: g/tIntercept: 395.5 mView all detailsHide details
Identity
- Hole ID
- MBA032
- Project
- Maria Bonita
- Commodity
- gold
- Region
- brazil
- Reported Region
- brazil
- Ticker
- ALTA
Geometry
- Grade
- 0.4
- Grade Unit
- g/t
- Intercept
- 395.5 m
- From
- 44.5 m
- To
- 440 m
- Hole Depth
- 546 m
- Intercept Depth
- 44.5 m
Classification
- Deposit Type
- porphyry
- Program
- exploration
- Sample Type
- drill
- Group ID
- MBA032:44.5-439.99999999999994
- Mining Method
- open_pit
Location
- Location
- Maria Bonita
- Loc. Source
- document
QA/QC
- Laboratory
- SGS
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- blanks
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-10-15T00:00:00.000Z
Reasoning: A very wide 395.5m intercept at 0.4 g/t gold in a porphyry system is a significant discovery-style result for depth extension.
Positive factors
- exceptional width
- demonstrates depth extent
Evidence · text
“MBA032... returned 395.5m @ 0.4g/t gold from 44.5m 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
MBA032Maria Bonita · goldGrade: 5.96Grade Unit: g/tIntercept: 1 mView all detailsHide details
Identity
- Hole ID
- MBA032
- Project
- Maria Bonita
- Commodity
- gold
- Region
- brazil
- Reported Region
- brazil
- Ticker
- ALTA
Geometry
- Grade
- 5.96
- Grade Unit
- g/t
- Intercept
- 1 m
- Hole Depth
- 546 m
Classification
- Deposit Type
- porphyry
- Program
- exploration
- Sample Type
- drill
- Group ID
- MBA032:null-null
- Mining Method
- open_pit
Location
- Location
- Maria Bonita
- Loc. Source
- document
QA/QC
- Laboratory
- SGS
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- blanks
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-10-15T00:00:00.000Z
Reasoning: A single assay of 5.96 g/t gold within a large low-grade intercept highlights the presence of higher-grade zones.
Positive factors
- high grade single assay
Evidence · text
“highest single assay interval of 5.96 g/t gold being returned from MBA032”
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
Resource Estimates (2)
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:00ff69af04c7d85e18c6
- Mining method
- open_pit
- Material type
- saprolite
Resource Data
- Category
- indicated
- Tonnes
- 24190000
- Grade
- 0.46
- Grade Unit
- g/t
- Contained Metal
- 357800
- Contained Unit
- oz
- Cutoff Grade
- 0.2
- Cutoff Unit
- g/t gold
Prior Estimate
- Resource Date
- 2025-06-12
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2025-10-15T00:00:00.000Z
Reasoning: Existing Indicated resource for Maria Bonita.
Evidence · text
“Maria Bonita open pit resource consists of 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 Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is 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:faa6f74dcce24eb27dcd
- Mining method
- open_pit
- Material type
- saprolite
Resource Data
- Category
- inferred
- Tonnes
- 25640000
- Grade
- 0.44
- Grade Unit
- g/t
- Contained Metal
- 362400
- Contained Unit
- oz
- Cutoff Grade
- 0.2
- Cutoff Unit
- g/t gold
Prior Estimate
- Resource Date
- 2025-06-12
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2025-10-15T00:00:00.000Z
Reasoning: Existing Inferred resource for Maria Bonita.
Evidence · text
“and 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 Disclosedpositive
Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison.
Why it applies: cutoff_grade is 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.