Sendero Resources Reports Drilling Results at Peñas Negras Project; Confirms Geological Model and Identifies Geochemical Vectors in Vicuña Belt, Argentina
Original announcement by tmx on
- Company
- Sendero Resources Corp.
- Ticker
- SEND
- Exchange
- TSX
- Region
- La Rioja, Argentina
- Primary commodity
- Gold
- Secondary commodities
- Silver, Antimony, Copper, Molybdenum, Lead, Zinc
- Document categories
- Drill results, Other
- Extracted
- 2026-09-14 22:29:02 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Sendero Resources has reported reconnaissance drilling results from its Peñas Negras Project in Argentina, confirming a porphyry-epithermal geological model. The program identified gold and silver mineralization, an extensive leached cap, and significant geochemical vectors including antimony.
Reasoning: Reconnaissance drilling confirms the geological model and identifies key pathfinder elements, supporting the potential for a larger porphyry-epithermal system.
Positive factors
- Confirmation of porphyry-epithermal geological model
- Identification of geochemical vectors (Sb, As, Cu, Mo, Pb, Zn)
- Discovery of extensive leached cap
- Strong surface geochemistry in nearby targets
Negative factors
- True widths currently unknown
- Drilling is reconnaissance/early-stage
Facts used in scoring: 5
Classification and evidence
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), accreditation (ISO/IEC 17025), and QA/QC methods (standards, blanks, duplicates).
Evidence · text
“Certified reference materials (standards), blank samples, and field duplicates (quarter core samples) were inserted into sampling stream at a rate of approximately 8%.”
Apparent Width Onlynegative
Interval given as downhole width with no true width or drill orientation — apparent width may overstate true thickness.
Why it applies: The document explicitly states that true widths are unknown at this stage.
Evidence · text
“True widths are unknown at this stage.”
Extracted facts
Stored fact records: 5. Some facts used in scoring do not have a stored record.
Drill Results (5)
PNDH-201Peñas Negras · goldGrade: 1.04Grade Unit: g/tIntercept: 1.5 mView all detailsHide details
Identity
- Hole ID
- PNDH-201
- Project
- Peñas Negras
- Commodity
- gold
- Region
- argentina
- Reported Region
- argentina
- Ticker
- SEND
Geometry
- Grade
- 1.04
- Grade Unit
- g/t
- Intercept
- 1.5 m
- From
- 14 m
- To
- 15.5 m
- Intercept Depth
- 14 m
Classification
- Sample Type
- drill
- Group ID
- PNDH-201:14-15.5
- Mining Method
- unknown
Location
- Loc. Confidence
- medium
QA/QC
- Laboratory
- SGS
- QA/QC Disclosed
- Yes
- Lab Certified
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-08-17T00:00:00.000Z
Reasoning: 1.04 g/t Au over 1.5 m is a strong result for a reconnaissance hole in this setting.
Positive factors
- High-grade intercept for reconnaissance drilling
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
PNDH-201Peñas Negras · silverGrade: 48Grade Unit: g/tIntercept: 1.5 mView all detailsHide details
Identity
- Hole ID
- PNDH-201
- Project
- Peñas Negras
- Commodity
- silver
- Region
- argentina
- Reported Region
- argentina
- Ticker
- SEND
Geometry
- Grade
- 48
- Grade Unit
- g/t
- Intercept
- 1.5 m
- From
- 14 m
- To
- 15.5 m
- Intercept Depth
- 14 m
Classification
- Sample Type
- drill
- Group ID
- PNDH-201:14-15.5
- Mining Method
- unknown
Location
- Loc. Confidence
- medium
QA/QC
- Laboratory
- SGS
- QA/QC Disclosed
- Yes
- Lab Certified
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-08-17T00:00:00.000Z
Reasoning: 48 g/t Ag is a significant anomaly within the gold intercept.
Positive factors
- Strong silver anomaly
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
PNDH-201Peñas Negras · silverGrade: 28.2Grade Unit: g/tIntercept: 1 mView all detailsHide details
Identity
- Hole ID
- PNDH-201
- Project
- Peñas Negras
- Commodity
- silver
- Region
- argentina
- Reported Region
- argentina
- Ticker
- SEND
Geometry
- Grade
- 28.2
- Grade Unit
- g/t
- Intercept
- 1 m
- From
- 57 m
- To
- 58 m
- Intercept Depth
- 57 m
Classification
- Sample Type
- drill
- Group ID
- PNDH-201:57-58
- Mining Method
- unknown
Location
- Loc. Confidence
- medium
QA/QC
- Laboratory
- SGS
- QA/QC Disclosed
- Yes
- Lab Certified
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-08-17T00:00:00.000Z
Reasoning: 28.2 g/t Ag represents a secondary silver anomaly in the hole.
Positive factors
- Silver anomaly
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
PNDH-200Peñas NegrasView all detailsHide details
Identity
- Hole ID
- PNDH-200
- Project
- Peñas Negras
- Region
- argentina
- Reported Region
- argentina
- Ticker
- SEND
Classification
- Sample Type
- drill
- Mining Method
- unknown
Location
- Loc. Confidence
- high
QA/QC
- Laboratory
- SGS
- QA/QC Disclosed
- Yes
- Lab Certified
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-08-17T00:00:00.000Z
Reasoning: The document states all three holes returned anomalous silver, though specific grades for PNDH-200 are not listed in the text.
Positive factors
- Silver anomaly present
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
PNDH-203Peñas NegrasView all detailsHide details
Identity
- Hole ID
- PNDH-203
- Project
- Peñas Negras
- Region
- argentina
- Reported Region
- argentina
- Ticker
- SEND
Classification
- Sample Type
- drill
- Mining Method
- unknown
Location
- Loc. Confidence
- high
QA/QC
- Laboratory
- SGS
- QA/QC Disclosed
- Yes
- Lab Certified
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-08-17T00:00:00.000Z
Reasoning: The document states all three holes returned anomalous silver, though specific grades for PNDH-203 are not listed in the text.
Positive factors
- Silver anomaly present
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
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.