Mirasol Provides Exploration Update on Sobek Copper-Gold Project in the Vicuña District, Chile
Original announcement by tmx on
- Company
- Mirasol Resources Ltd.
- Ticker
- MRZ
- Exchange
- TSX
- Region
- Vicuña District, Chile
- Primary commodity
- Copper
- Secondary commodities
- Gold, Silver, Molybdenum, Zinc, Lead
- Document categories
- Drill results
- Extracted
- 2026-09-18 10:54:12 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Mirasol Resources completed exploration at the 46 South target of the Sobek project, reporting one drill hole (DDH-001) with modest geochemical intercepts. While the drilling confirmed a structurally controlled hydrothermal system with breccia zones, no significant copper mineralization was found above a 0.10% Cu cut-off.
Reasoning: The drill results confirm the geological model of a structurally controlled system but failed to return significant copper grades, leading to a pivot in targeting.
Positive factors
- Confirmed structurally controlled hydrothermal system
- Intersection of multiple hydrothermal breccia zones
- Proximity to Filo del Sol and Lunahuasi
Negative factors
- Assay results described as modest
- No significant copper intercepts above 0.10% Cu cut-off
- Mineralization not strengthening with depth
Facts used in scoring: 6
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 includes details on standards, blanks, duplicates, and independent lab (ALS).
Evidence · text
“Geochemical assays are obtained and reported under a quality assurance and quality control (QA/QC) program with insertions of controls (standards, blanks and duplicates) submitted to the laboratory.”
Nearology Playneutral
Value premise rests on proximity to a known deposit rather than own results.
Why it applies: Project is located 7 km west of the Filo del Sol discovery.
Evidence · text
“located just 7 km west of Filo del Sol in the Vicuña District”
Deleterious Elements Presentnegative
A source-stated penalty, refractory or recovery concern in the fact's scope. Element detection alone, including measured elements explicitly below penalty thresholds, does not trigger this tag. Respect negation and retain a separately stated concern even when another risk is explicitly absent.
Why it applies: Presence of arsenic and antimony noted in the hydrothermal signature.
Evidence · text
“particularly arsenic-antimony-lead-zinc-silver”
Extracted facts
Stored fact records: 6. Some facts used in scoring do not have a stored record.
Drill Results (6)
S46-DDH-001Sobek · copperGrade: 158Grade Unit: ppmIntercept: 15.82 mView all detailsHide details
Identity
- Hole ID
- S46-DDH-001
- Project
- Sobek
- Commodity
- copper
- Region
- chile
- Reported Region
- chile
- Ticker
- MRZ
Geometry
- Grade
- 158
- Grade Unit
- ppm
- Intercept
- 15.82 m
- From
- 147.18 m
- To
- 163 m
- Intercept Depth
- 147.18 m
Classification
- Sample Type
- drill
- Group ID
- S46-DDH-001:147.18-163
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-04-23T00:00:00.000Z
Reasoning: Grade is very low (0.158% Cu) and below the stated 0.10% cut-off for significance in this context.
Negative factors
- Below economic threshold
Evidence · text
“15.82 m from 147.18 m to 163.00 m averaging 158 ppm copper”
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
S46-DDH-001Sobek · goldGrade: 0.03Grade Unit: g/tIntercept: 15.82 mView all detailsHide details
Identity
- Hole ID
- S46-DDH-001
- Project
- Sobek
- Commodity
- gold
- Region
- chile
- Reported Region
- chile
- Ticker
- MRZ
Geometry
- Grade
- 0.03
- Grade Unit
- g/t
- Intercept
- 15.82 m
- From
- 147.18 m
- To
- 163 m
- Intercept Depth
- 147.18 m
Classification
- Sample Type
- drill
- Group ID
- S46-DDH-001:147.18-163
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-04-23T00:00:00.000Z
Reasoning: Grade is negligible.
Negative factors
- Extremely low grade
Evidence · text
“0.03 g/t gold”
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
S46-DDH-001Sobek · silverGrade: 1.57Grade Unit: g/tIntercept: 15.82 mView all detailsHide details
Identity
- Hole ID
- S46-DDH-001
- Project
- Sobek
- Commodity
- silver
- Region
- chile
- Reported Region
- chile
- Ticker
- MRZ
Geometry
- Grade
- 1.57
- Grade Unit
- g/t
- Intercept
- 15.82 m
- From
- 147.18 m
- To
- 163 m
- Intercept Depth
- 147.18 m
Classification
- Sample Type
- drill
- Group ID
- S46-DDH-001:147.18-163
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-04-23T00:00:00.000Z
Reasoning: Low grade silver.
Evidence · text
“1.57 g/t silver”
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
S46-DDH-001Sobek · copperGrade: 252Grade Unit: ppmIntercept: 4.72 mView all detailsHide details
Identity
- Hole ID
- S46-DDH-001
- Project
- Sobek
- Commodity
- copper
- Region
- chile
- Reported Region
- chile
- Ticker
- MRZ
Geometry
- Grade
- 252
- Grade Unit
- ppm
- Intercept
- 4.72 m
- From
- 147.18 m
- To
- 151.9 m
- Intercept Depth
- 147.18 m
Classification
- Sample Type
- drill
- Group ID
- S46-DDH-001:147.18-151.9
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-04-23T00:00:00.000Z
Reasoning: Higher grade than the main interval but still only 0.25% Cu.
Negative factors
- Narrow interval
Evidence · text
“4.72 m from 147.18 m to 151.90 m averaging 252 ppm copper”
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
S46-DDH-001Sobek · copperGrade: 112Grade Unit: ppmIntercept: 21.3 mView all detailsHide details
Identity
- Hole ID
- S46-DDH-001
- Project
- Sobek
- Commodity
- copper
- Region
- chile
- Reported Region
- chile
- Ticker
- MRZ
Geometry
- Grade
- 112
- Grade Unit
- ppm
- Intercept
- 21.3 m
- From
- 204 m
- To
- 225.3 m
- Intercept Depth
- 204 m
Classification
- Sample Type
- drill
- Group ID
- S46-DDH-001:204-225.3
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-04-23T00:00:00.000Z
Reasoning: Wide interval but grade is only 0.11% Cu.
Positive factors
- Good width
Negative factors
- Low grade
Evidence · text
“21.3 m from 204.0 m to 225.3 m averaging 112 ppm copper”
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
S46-DDH-001Sobek · copperGrade: 720Grade Unit: ppmIntercept: 7.2 mView all detailsHide details
Identity
- Hole ID
- S46-DDH-001
- Project
- Sobek
- Commodity
- copper
- Region
- chile
- Reported Region
- chile
- Ticker
- MRZ
Geometry
- Grade
- 720
- Grade Unit
- ppm
- Intercept
- 7.2 m
- From
- 566.75 m
- To
- 573.95 m
- Intercept Depth
- 566.75 m
Classification
- Sample Type
- drill
- Group ID
- S46-DDH-001:566.75-573.95
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-04-23T00:00:00.000Z
Reasoning: Best grade in the hole (0.72% Cu) but still relatively narrow.
Positive factors
- Highest grade intercept
Negative factors
- Narrow width
Evidence · text
“7.20 m from 566.75 m to 573.95 m averaging 720 ppm copper”
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.