Altamira Gold Intersects High Grade Gold Mineralization in the First Drill Hole at the Guillermo Target and Extends Maria Bonita Mineralization at Depth, 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
- 2026-08-21 00:58:15 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Altamira Gold reported high-grade gold intercepts at the new Guillermo target, including 0.9m @ 18.1 g/t Au. Additionally, drilling at the Maria Bonita resource confirmed mineralization continues at depth, extending the known system.
Reasoning: The announcement reports significant high-grade gold intercepts at a new target (Guillermo) and confirms depth continuity at an existing resource (Maria Bonita), demonstrating district-scale potential.
Positive factors
- High-grade gold intercept at new Guillermo target
- Extension of Maria Bonita mineralization at depth
- Multiple exploration targets showing positive results
Negative factors
- True width of Guillermo intercept not yet known
Facts used in scoring: 6
Classification and evidence
Step-Out Extensionpositive
Mineralization extended beyond the previously known limit.
Why it applies: Drill hole MBA-034 extended known mineralization more than 100m below previously tested depth.
Evidence · text
“Drill hole MBA-034 extended the known gold mineralization more than 100 metres below the previously tested depth”
Extracted facts
Stored fact records: 6. Some facts used in scoring do not have a stored record.
Drill Results (6)
GLO-01Guillermo · goldGrade: 4.2Grade Unit: g/tIntercept: 7 mView all detailsHide details
Identity
- Hole ID
- GLO-01
- Project
- Guillermo
- Commodity
- gold
- Region
- brazil
- Reported Region
- Mato Grosso, Brazil
- Ticker
- ALTA
Geometry
- Grade
- 4.2
- Grade Unit
- g/t
- Intercept
- 7 m
- From
- 111 m
- To
- 118 m
Classification
- Program
- exploration
- Sample Type
- drill
- Mining Method
- unknown
QA/QC
- Laboratory
- SGS Geosol
- QA/QC Disclosed
- Yes
- Lab Certified
- Yes
- QP Signed
- Yes
- QA/QC Methods
- duplicates, blanks, standards
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-03-18T00:00:00.000Z
Reasoning: 4.2 g/t over 7m is a strong exploration intercept.
Positive factors
- Strong grade for exploration target
Negative factors
- Apparent width only
Evidence · text
“7 metres @ 4.2g/t gold from 111m in drill hole GLO-01”
Rejected tags
Rejected tags — excluded from scoring because their label or evidence could not be verified.
Apparent Width OnlyRejected · negative
Interval given as downhole width with no true width or drill orientation — apparent width may overstate true thickness.
Reason: The true width of the mineralized interval in the drill hole is not currently known.
Evidence · text
“the true width of the mineralized interval in the drill hole is not currently known”
QA/QC DisclosedRejected · positive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Reason: Release mentions SGS Geosol, fire assay, and use of blanks, standards, and duplicates.
Evidence · text
“For all drilling, half core is submitted to SGS Geosol... inserting control samples randomly into the submitted batch, comprising field duplicates, independent reference samples and 'blank' samples.”
GLO-01Guillermo · goldGrade: 18.1Grade Unit: g/tIntercept: 0.9 mView all detailsHide details
Identity
- Hole ID
- GLO-01
- Project
- Guillermo
- Commodity
- gold
- Region
- brazil
- Reported Region
- Mato Grosso, Brazil
- Ticker
- ALTA
Geometry
- Grade
- 18.1
- Grade Unit
- g/t
- Intercept
- 0.9 m
- From
- 117.1 m
- To
- 118 m
Classification
- Program
- exploration
- Sample Type
- drill
- Mining Method
- unknown
QA/QC
- Laboratory
- SGS Geosol
- QA/QC Disclosed
- Yes
- Lab Certified
- Yes
- QP Signed
- Yes
- QA/QC Methods
- duplicates, blanks, standards
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-03-18T00:00:00.000Z
Reasoning: 18.1 g/t is an exceptionally high grade for this deposit type.
Positive factors
- Bonanza grade intercept
Evidence · text
“0.9m @ 18.1g/t gold from 117.1m”
Rejected tags
Rejected tags — excluded from scoring because their label or evidence could not be verified.
Bonanza InterceptRejected · positive
Exceptionally high-grade zone, well above the deposit-type norm.
Reason: 18.1 g/t gold is exceptionally high grade.
Evidence · text
“0.9m @ 18.1g/t gold”
MBA-034Maria Bonita · goldGrade: 0.3Grade Unit: g/tIntercept: 75 mHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Hole ID
- MBA-034
- Project
- Maria Bonita
- Commodity
- gold
- Region
- brazil
- Reported Region
- Mato Grosso, Brazil
- Ticker
- ALTA
Geometry
- Grade
- 0.3
- Grade Unit
- g/t
- Intercept
- 75 m
Classification
- Program
- resource
- Sample Type
- drill
- Mining Method
- open_pit
QA/QC
- Laboratory
- SGS Geosol
- QA/QC Disclosed
- Yes
- Lab Certified
- Yes
- QP Signed
- Yes
- QA/QC Methods
- duplicates, blanks, standards
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Interp. Status
- scored
- Historical
- Yes
Dates
- Event date
- 2026-03-18T00:00:00.000Z
Reasoning: Confirms depth continuity but grade is near the cut-off.
Positive factors
- Confirms mineralization at depth
Negative factors
- Low grade
Evidence · text
“hole MBA034 returned 75 metres @ 0.3 gm/t gold”
MBA-034Maria Bonita · goldGrade: 0.4Grade Unit: g/tIntercept: 33.5 mHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Hole ID
- MBA-034
- Project
- Maria Bonita
- Commodity
- gold
- Region
- brazil
- Reported Region
- Mato Grosso, Brazil
- Ticker
- ALTA
Geometry
- Grade
- 0.4
- Grade Unit
- g/t
- Intercept
- 33.5 m
Classification
- Program
- resource
- Sample Type
- drill
- Mining Method
- open_pit
QA/QC
- Laboratory
- SGS Geosol
- QA/QC Disclosed
- Yes
- Lab Certified
- Yes
- QP Signed
- Yes
- QA/QC Methods
- duplicates, blanks, standards
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Interp. Status
- scored
- Historical
- Yes
Dates
- Event date
- 2026-03-18T00:00:00.000Z
Reasoning: Sub-interval confirms depth continuity.
Positive factors
- Confirms mineralization at depth
Evidence · text
“33.5 metres @ 0.4 gm/t gold”
Fact 5Maria Bonita · goldGrade: 0.46Grade Unit: g/tView all detailsHide details
Identity
- Project
- Maria Bonita
- Commodity
- gold
- Region
- brazil
- Reported Region
- Mato Grosso, Brazil
- Ticker
- ALTA
Geometry
- Grade
- 0.46
- Grade Unit
- g/t
Compositing
- Cutoff Grade
- 0.2
- Cutoff Unit
- g/t
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-03-18T00:00:00.000Z
Reasoning: Existing resource component.
Evidence · text
“Maria Bonita open-pit resource consists of Indicated Resources of 24.19Mt @ 0.46g/t gold (357,800oz)”
Rejected tags
Rejected tags — excluded from scoring because their label or evidence could not be verified.
Indicated ResourceRejected · positive · Story-specific tag
Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves.
Reason: Explicitly stated as Indicated Resource.
Evidence · text
“Indicated Resources of 24.19Mt @ 0.46g/t gold”
NI 43-101 CompliantRejected · positive · Story-specific tag
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Reason: Resource reported under NI 43-101.
Evidence · text
“reported under NI43-101 in June 2025”
Fact 6Maria Bonita · goldGrade: 0.44Grade Unit: g/tView all detailsHide details
Identity
- Project
- Maria Bonita
- Commodity
- gold
- Region
- brazil
- Reported Region
- Mato Grosso, Brazil
- Ticker
- ALTA
Geometry
- Grade
- 0.44
- Grade Unit
- g/t
Compositing
- Cutoff Grade
- 0.2
- Cutoff Unit
- g/t
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-03-18T00:00:00.000Z
Reasoning: Existing resource component.
Evidence · text
“Inferred Resources of 25.64Mt @ 0.44g/t gold (362,400oz)”
Rejected tags
Rejected tags — excluded from scoring because their label or evidence could not be verified.
Inferred ResourceRejected · negative · Story-specific tag
Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone.
Reason: Explicitly stated as Inferred Resource.
Evidence · text
“Inferred Resources of 25.64Mt @ 0.44g/t gold”
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.