Altamira Gold Completes First Deep Drill Hole at Maria Bonita and Extends Size of Alteration Zone at Tavares Norte Target, 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
- Copper, Molybdenum
- Document categories
- Drill results, Other
- Extracted
- 2026-09-13 11:24:52 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Altamira Gold has completed its first deep drill hole (MBA032) at the Maria Bonita target, intersecting over 500m of highly altered porphyritic rocks. Additionally, surface mapping and grab sampling at the Tavares Norte target suggest a significant extension of the sericite alteration zone and the presence of high-grade gold, copper, and molybdenum.
Reasoning: The completion of the first deep hole at Maria Bonita and the extension of the alteration zone at Tavares Norte are significant exploration milestones, though the primary drill results are still pending.
Positive factors
- significant lithological thickness
- extension of alteration zone
- high-grade surface samples
Negative factors
- assay results pending for deep hole
- grab samples are not representative
Facts used in scoring: 6
Classification and evidence
Step-Out Extensionpositive
Mineralization extended beyond the previously known limit.
Why it applies: The sericite alteration zone at Tavares Norte extends 1.5km further east than previously known.
Evidence · text
“suggests that the sericite alteration zone extends 1.5km further east than previously known”
Nearology Playneutral
Value premise rests on proximity to a known deposit rather than own results.
Why it applies: The Tavares Norte target is positioned 1.5km north-west of the Cajueiro Central resource.
Evidence · text
“located 1.5km north-west of the Cajueiro Central resource”
Extracted facts
Stored fact records: 6. Some facts used in scoring do not have a stored record.
Drill Results (6)
MBA032Cajueiro · goldIntercept: 500 mHistorical resultNeeds review: historical_restatementView all detailsHide details
Identity
- Hole ID
- MBA032
- Project
- Cajueiro
- Commodity
- gold
- Region
- brazil
- Reported Region
- brazil
- Ticker
- ALTA
Geometry
- Intercept
- 500 m
- From
- 34.3 m
- To
- 534.7 m
- Intercept Depth
- 34.3 m
Classification
- Program
- exploration
- Sample Type
- drill
- Group ID
- MBA032:34.3-534.7
- Mining Method
- open_pit
QA/QC
- QA/QC Disclosed
- Yes
- QA/QC Methods
- blanks
Review
- Needs Review
- Yes
- Review Reason
- historical_restatement
- Interp. Status
- scored
- Historical
- Yes
Dates
- Event date
- 2025-09-02T00:00:00.000Z
Reasoning: The hole intersected a very thick (500m) zone of highly altered porphyritic rocks, but the actual gold grade is not yet known.
Positive factors
- large intercept width
Negative factors
- assay results pending
Evidence · text
“intersected over 500 meters of brecciated and highly altered porphyritic intrusive rocks from 34.3m to 534.7m 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
Tavares Norte GrabCajueiro · goldGrade: 27.5Grade Unit: g/t AuNeeds review: ungroundedView all detailsHide details
Identity
- Hole ID
- Tavares Norte Grab
- Project
- Cajueiro
- Commodity
- gold
- Region
- brazil
- Reported Region
- Mato Grosso, Brazil
- Ticker
- ALTA
Geometry
- Grade
- 27.5
- Grade Unit
- g/t Au
Classification
- Sample Type
- surface
Review
- Needs Review
- Yes
- Review Reason
- ungrounded
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-09-02T00:00:00.000Z
Reasoning: A surface grab sample returned an exceptionally high gold grade of 27.5 g/t Au.
Positive factors
- high grade surface sample
Negative factors
- grab samples are not representative
Evidence · text
“maximum of 27.5 g/t Au”
Tags used in scoring
No QA/QC Disclosurenegative
Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document.
Why it applies: qaqc_disclosed is not 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
Tavares Norte GrabCajueiro · copperGrade: 929Grade Unit: ppm CuNeeds review: ungroundedView all detailsHide details
Identity
- Hole ID
- Tavares Norte Grab
- Project
- Cajueiro
- Commodity
- copper
- Region
- brazil
- Reported Region
- Mato Grosso, Brazil
- Ticker
- ALTA
Geometry
- Grade
- 929
- Grade Unit
- ppm Cu
Classification
- Sample Type
- surface
Review
- Needs Review
- Yes
- Review Reason
- ungrounded
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-09-02T00:00:00.000Z
Reasoning: The same sample that returned high gold also showed significant copper content.
Positive factors
- anomalous copper in grab sample
Negative factors
- grab samples are not representative
Evidence · text
“returned an assay value of 929 ppm Cu”
Tags used in scoring
No QA/QC Disclosurenegative
Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document.
Why it applies: qaqc_disclosed is not 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
Morro Verde GrabCajueiro · goldGrade: 5.2Grade Unit: g/t AuNeeds review: ungroundedView all detailsHide details
Identity
- Hole ID
- Morro Verde Grab
- Project
- Cajueiro
- Commodity
- gold
- Region
- brazil
- Reported Region
- Mato Grosso, Brazil
- Ticker
- ALTA
Geometry
- Grade
- 5.2
- Grade Unit
- g/t Au
Classification
- Sample Type
- surface
Review
- Needs Review
- Yes
- Review Reason
- ungrounded
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-09-02T00:00:00.000Z
Reasoning: Surface grab sampling at Morro Verde returned a high gold grade of 5.2 g/t Au.
Positive factors
- high grade surface sample
Negative factors
- grab samples are not representative
Evidence · text
“maximum value of 5.2 g/t Au”
Tags used in scoring
No QA/QC Disclosurenegative
Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document.
Why it applies: qaqc_disclosed is not 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
Morro Verde GrabCajueiro · molybdenumGrade: 356Grade Unit: ppm MoNeeds review: ungroundedView all detailsHide details
Identity
- Hole ID
- Morro Verde Grab
- Project
- Cajueiro
- Commodity
- molybdenum
- Region
- brazil
- Reported Region
- Mato Grosso, Brazil
- Ticker
- ALTA
Geometry
- Grade
- 356
- Grade Unit
- ppm Mo
Classification
- Sample Type
- surface
Review
- Needs Review
- Yes
- Review Reason
- ungrounded
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-09-02T00:00:00.000Z
Reasoning: Anomalous molybdenum was detected in surface samples at Morro Verde.
Positive factors
- anomalous molybdenum
Negative factors
- grab samples are not representative
Evidence · text
“returned assay values of 5.20 g/t Au, 356 ppm Mo, and 366 ppm Cu”
Tags used in scoring
No QA/QC Disclosurenegative
Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document.
Why it applies: qaqc_disclosed is not 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
Morro Verde GrabCajueiro · copperGrade: 366Grade Unit: ppm CuNeeds review: ungroundedView all detailsHide details
Identity
- Hole ID
- Morro Verde Grab
- Project
- Cajueiro
- Commodity
- copper
- Region
- brazil
- Reported Region
- Mato Grosso, Brazil
- Ticker
- ALTA
Geometry
- Grade
- 366
- Grade Unit
- ppm Cu
Classification
- Sample Type
- surface
Review
- Needs Review
- Yes
- Review Reason
- ungrounded
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2025-09-02T00:00:00.000Z
Reasoning: Anomalous copper was detected in surface samples at Morro Verde.
Positive factors
- anomalous copper
Negative factors
- grab samples are not representative
Evidence · text
“returned assay values of 5.20 g/t Au, 356 ppm Mo, and 366 ppm Cu”
Tags used in scoring
No QA/QC Disclosurenegative
Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document.
Why it applies: qaqc_disclosed is not 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
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.