Pampa Medina Sulphide Drilling Intersects 16m of 5.70% Cu and 62.6 g/t Ag including 4m of 11.32% Cu and 144.0 g/t Ag in Significant Extension of UHG Bornite Zone
Original announcement by tmx on
- Company
- Marimaca Copper Corp.
- Ticker
- MARI
- Exchange
- TSX
- Region
- Antofagasta Region, Chile
- Primary commodity
- Copper
- Secondary commodities
- Silver
- Document categories
- Drill results
- Extracted
- 2026-09-14 10:53:54 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Marimaca Copper Corp. announced exceptional drill results from its Pampa Medina deposit, highlighted by hole SPRD-05 intersecting 16m at 5.70% Cu and 62.6 g/t Ag, including 4m at 11.32% Cu and 144.0 g/t Ag. These results represent a significant extension of the ultra-high-grade bornite zone and demonstrate strong lateral continuity of copper-silver mineralization, with the company planning an initial Mineral Resource Estimate following the current delineation campaign.
Reasoning: Marimaca Copper has reported exceptional copper and silver drill results from its Pampa Medina deposit, including ultra-high-grade bornite mineralization, which significantly exceed previous best intercepts and peer averages. The drilling extends the known high-grade zone and demonstrates strong lateral continuity, providing high novelty and materiality for the project.
Positive factors
- Exceptional copper grades significantly exceeding prior best results and peer averages
- Exceptional silver grades significantly exceeding prior best results and peer averages
- Significant intercept lengths demonstrating continuity of mineralization
- Extension of the ultra-high-grade bornite zone
- High confidence in results due to JORC/NI 43-101 compliance and disclosed QA/QC
Negative factors
- No specific cut-off grade used for grade width calculations
Low confidence — this extraction should be reviewed alongside the original source.
Facts used in scoring: 33
Classification and evidence
Bonanza Interceptpositive
Exceptionally high-grade zone, well above the deposit-type norm.
Why it applies: The intercept of 11.32% Cu over 4m and 5.70% Cu over 16m are exceptionally high grades for a porphyry deposit type, significantly exceeding the exceptional threshold of 0.8% Cu.
Evidence · text
“16m of 5.70% Cu and 62.6 g/t Ag including 4m of 11.32% Cu and 144.0 g/t Ag”
Bonanza Interceptpositive
Exceptionally high-grade zone, well above the deposit-type norm.
Why it applies: The intercept of 144.0 g/t Ag over 4m is a very high grade for silver, significantly exceeding the company's prior best results and ranking well above the peer 75th percentile.
Evidence · text
“16m of 5.70% Cu and 62.6 g/t Ag including 4m of 11.32% Cu and 144.0 g/t Ag”
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: The document states that 'True widths are estimated at 80% of the reported downhole intersection'.
Evidence · text
“True widths are estimated at 80% of the reported downhole intersection”
Step-Out Extensionpositive
Mineralization extended beyond the previously known limit.
Why it applies: Hole SPRD-05 is described as drilled 'east of previously released hole SPRD-06' and 'approximately 650m northwest of SMRD-13', indicating an extension of the known mineralization.
Evidence · text
“SPRD-05 - drilled east of previously released hole SPRD-06 - intersected the ultra-high grade (UHG) bornite manto at depth in sediments and tuffs”
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 'A full QA/QC program, involving insertion of appropriate blanks, standards and duplicates was employed with acceptable results'.
Evidence · text
“A full QA/QC program, involving insertion of appropriate blanks, standards and duplicates was employed with acceptable results.”
JORC Compliantpositive · Story-specific tag
Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard.
Why it applies: The document includes an 'Appendix 1 - JORC Code 2012 Table 1' and states that the information 'can be reported under both JORC and NI43-101 standards'.
Evidence · text
“Appendix 1 - JORC Code 2012 Table 1”
NI 43-101 Compliantpositive · Story-specific tag
Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard.
Why it applies: The document states that the information 'can be reported under both JORC and NI43-101 standards' and a Qualified Person is named for NI 43-101 purposes.
Evidence · text
“can be reported under both JORC and NI43-101 standards”
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: The document explicitly states 'No specific grade cap or cut-off was used during grade width calculations'.
Evidence · text
“No specific grade cap or cut-off was used during grade width calculations.”
Metal Equivalent Opaquenegative
Metal equivalent grade reported without disclosing the price, recovery, or payability assumptions used. Requires an actual metal equivalent grade; a combined elemental basket such as PGE is not a metal equivalent.
Why it applies: The document explicitly states 'No metal equivalents have been reported'.
Evidence · text
“No metal equivalents have been reported.”
Extracted facts
Stored fact records: 33. Some facts used in scoring do not have a stored record.
Drill Results (33)
SPRD-04Pampa Medina · copperGrade: 0.35Grade Unit: %Intercept: 10 mView all detailsHide details
Identity
- Hole ID
- SPRD-04
- Project
- Pampa Medina
- Commodity
- copper
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 0.35
- Grade Unit
- %
- Intercept
- 10 m
- True Width
- 8 m
- From
- 76 m
- To
- 86 m
- Hole Depth
- 732 m
- Intercept Depth
- 76 m
Classification
- Deposit Type
- other
- Program
- resource
- Sample Type
- drill
- Group ID
- SPRD-04:76-86
- Mining Method
- underground
Location
- Location
- Central Zone
- Easting
- 407402.94
- Northing
- 7440953.06
- CRS
- WGS84 UTM
- Elevation
- 1268.16 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Metal Equivalent
- Assumptions Disclosed
- No
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-06-08T00:00:00.000Z
Reasoning: This copper intercept, while not the highest grade, is considered strong for a manto-type deposit and contributes to the overall resource definition. The true width estimate adds confidence.
Positive factors
- Copper grade (0.35%) is strong for a porphyry deposit type
- True width estimated at 80% of downhole length
Negative factors
- No specific cut-off grade used for grade width calculations
Evidence · table
“0.35”
Context: 10
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 8
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
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
SPRD-04Pampa Medina · copperGrade: 0.3Grade Unit: %Intercept: 354 mView all detailsHide details
Identity
- Hole ID
- SPRD-04
- Project
- Pampa Medina
- Commodity
- copper
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 0.3
- Grade Unit
- %
- Intercept
- 354 m
- True Width
- 283.2 m
- From
- 366 m
- To
- 720 m
- Hole Depth
- 732 m
- Intercept Depth
- 76 m
Classification
- Deposit Type
- other
- Program
- resource
- Sample Type
- drill
- Group ID
- SPRD-04:366-720
- Mining Method
- underground
Location
- Location
- Central Zone
- Easting
- 407402.94
- Northing
- 7440953.06
- CRS
- WGS84 UTM
- Elevation
- 1268.16 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Metal Equivalent
- Assumptions Disclosed
- No
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-06-08T00:00:00.000Z
Reasoning: This very long copper intercept, while lower grade, indicates a substantial mineralized zone, which is highly material for resource potential. The true width estimate adds confidence.
Positive factors
- Significant intercept length (354m) demonstrating broad mineralization
- Copper grade (0.30%) is strong for a porphyry deposit type
- True width estimated at 80% of downhole length
Negative factors
- No specific cut-off grade used for grade width calculations
Evidence · table
“0.30”
Context: 354
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 283.2
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
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
SPRD-04Pampa Medina · copperGrade: 0.35Grade Unit: %Intercept: 140 mView all detailsHide details
Identity
- Hole ID
- SPRD-04
- Project
- Pampa Medina
- Commodity
- copper
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 0.35
- Grade Unit
- %
- Intercept
- 140 m
- True Width
- 112 m
- From
- 366 m
- To
- 506 m
- Hole Depth
- 732 m
- Intercept Depth
- 76 m
Classification
- Deposit Type
- other
- Program
- resource
- Sample Type
- drill
- Group ID
- SPRD-04:366-506
- Mining Method
- underground
Location
- Location
- Central Zone
- Easting
- 407402.94
- Northing
- 7440953.06
- CRS
- WGS84 UTM
- Elevation
- 1268.16 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Metal Equivalent
- Assumptions Disclosed
- No
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-06-08T00:00:00.000Z
Reasoning: This long copper intercept, a sub-interval of a larger zone, reinforces the broad mineralization and is material for resource potential. The true width estimate adds confidence.
Positive factors
- Significant intercept length (140m) within a broader zone
- Copper grade (0.35%) is strong for a porphyry deposit type
- True width estimated at 80% of downhole length
Negative factors
- No specific cut-off grade used for grade width calculations
Evidence · table
“0.35”
Context: 140
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 112
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
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
SPRD-04Pampa Medina · copperGrade: 0.71Grade Unit: %Intercept: 32 mView all detailsHide details
Identity
- Hole ID
- SPRD-04
- Project
- Pampa Medina
- Commodity
- copper
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 0.71
- Grade Unit
- %
- Intercept
- 32 m
- True Width
- 25.6 m
- From
- 468 m
- To
- 500 m
- Hole Depth
- 732 m
- Intercept Depth
- 76 m
Classification
- Deposit Type
- other
- Program
- resource
- Sample Type
- drill
- Group ID
- SPRD-04:468-500
- Mining Method
- underground
Location
- Location
- Central Zone
- Easting
- 407402.94
- Northing
- 7440953.06
- CRS
- WGS84 UTM
- Elevation
- 1268.16 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Metal Equivalent
- Assumptions Disclosed
- No
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-06-08T00:00:00.000Z
Reasoning: This strong copper intercept within a mixed zone is material for resource potential. The true width estimate adds confidence.
Positive factors
- Copper grade (0.71%) is strong for a porphyry deposit type
- Significant intercept length (32m) within a broader zone
- True width estimated at 80% of downhole length
Negative factors
- No specific cut-off grade used for grade width calculations
Evidence · table
“0.71”
Context: 32
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 25.6
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
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
SPRD-04Pampa Medina · silverGrade: 4.1Grade Unit: g/tIntercept: 32 mView all detailsHide details
Identity
- Hole ID
- SPRD-04
- Project
- Pampa Medina
- Commodity
- silver
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 4.1
- Grade Unit
- g/t
- Intercept
- 32 m
- True Width
- 25.6 m
- From
- 468 m
- To
- 500 m
- Hole Depth
- 732 m
- Intercept Depth
- 76 m
Classification
- Deposit Type
- other
- Program
- resource
- Sample Type
- drill
- Group ID
- SPRD-04:468-500
- Mining Method
- underground
Location
- Location
- Central Zone
- Easting
- 407402.94
- Northing
- 7440953.06
- CRS
- WGS84 UTM
- Elevation
- 1268.16 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Metal Equivalent
- Assumptions Disclosed
- No
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-06-08T00:00:00.000Z
Reasoning: This silver intercept is below the company's average and peer 25th percentile, indicating low materiality for silver at this grade.
Positive factors
- True width estimated at 80% of downhole length
Negative factors
- Silver grade (4.1 g/t) is below the company's average and peer 25th percentile
- No specific cut-off grade used for grade width calculations
Evidence · table
“4.1”
Context: 32
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 25.6
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
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
SPRD-04Pampa Medina · copperGrade: 0.95Grade Unit: %Intercept: 10 mView all detailsHide details
Identity
- Hole ID
- SPRD-04
- Project
- Pampa Medina
- Commodity
- copper
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 0.95
- Grade Unit
- %
- Intercept
- 10 m
- True Width
- 8 m
- From
- 484 m
- To
- 494 m
- Hole Depth
- 732 m
- Intercept Depth
- 76 m
Classification
- Deposit Type
- other
- Program
- resource
- Sample Type
- drill
- Group ID
- SPRD-04:484-494
- Mining Method
- underground
Location
- Location
- Central Zone
- Easting
- 407402.94
- Northing
- 7440953.06
- CRS
- WGS84 UTM
- Elevation
- 1268.16 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Metal Equivalent
- Assumptions Disclosed
- No
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-06-08T00:00:00.000Z
Reasoning: This exceptional copper intercept within a mixed zone is highly material for resource potential. The true width estimate adds confidence.
Positive factors
- Copper grade (0.95%) is exceptional for a porphyry deposit type
- True width estimated at 80% of downhole length
Negative factors
- No specific cut-off grade used for grade width calculations
Evidence · table
“0.95”
Context: 10
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 8
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
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
SPRD-04Pampa Medina · silverGrade: 7.4Grade Unit: g/tIntercept: 10 mView all detailsHide details
Identity
- Hole ID
- SPRD-04
- Project
- Pampa Medina
- Commodity
- silver
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 7.4
- Grade Unit
- g/t
- Intercept
- 10 m
- True Width
- 8 m
- From
- 484 m
- To
- 494 m
- Hole Depth
- 732 m
- Intercept Depth
- 76 m
Classification
- Deposit Type
- other
- Program
- resource
- Sample Type
- drill
- Group ID
- SPRD-04:484-494
- Mining Method
- underground
Location
- Location
- Central Zone
- Easting
- 407402.94
- Northing
- 7440953.06
- CRS
- WGS84 UTM
- Elevation
- 1268.16 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Metal Equivalent
- Assumptions Disclosed
- No
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-06-08T00:00:00.000Z
Reasoning: This silver intercept is below the company's average and peer 25th percentile, indicating low materiality for silver at this grade.
Positive factors
- True width estimated at 80% of downhole length
Negative factors
- Silver grade (7.4 g/t) is below the company's average and peer 25th percentile
- No specific cut-off grade used for grade width calculations
Evidence · table
“7.4”
Context: 10
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 8
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
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
SPRD-04Pampa Medina · copperGrade: 1.97Grade Unit: %Intercept: 22 mView all detailsHide details
Identity
- Hole ID
- SPRD-04
- Project
- Pampa Medina
- Commodity
- copper
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 1.97
- Grade Unit
- %
- Intercept
- 22 m
- True Width
- 17.6 m
- From
- 610 m
- To
- 632 m
- Hole Depth
- 732 m
- Intercept Depth
- 76 m
Classification
- Deposit Type
- other
- Program
- resource
- Sample Type
- drill
- Group ID
- SPRD-04:610-632
- Mining Method
- underground
Location
- Location
- Central Zone
- Easting
- 407402.94
- Northing
- 7440953.06
- CRS
- WGS84 UTM
- Elevation
- 1268.16 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Metal Equivalent
- Assumptions Disclosed
- No
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-06-08T00:00:00.000Z
Reasoning: This exceptional copper intercept is highly material and contributes to the understanding of the high-grade zones at depth. The true width estimate adds confidence.
Positive factors
- Copper grade (1.97%) is exceptional for a porphyry deposit type
- Intercept length (22m) is strong continuity
- True width estimated at 80% of downhole length
Negative factors
- No specific cut-off grade used for grade width calculations
Evidence · table
“1.97”
Context: 22
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 17.6
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
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
SPRD-04Pampa Medina · silverGrade: 9.2Grade Unit: g/tIntercept: 22 mView all detailsHide details
Identity
- Hole ID
- SPRD-04
- Project
- Pampa Medina
- Commodity
- silver
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 9.2
- Grade Unit
- g/t
- Intercept
- 22 m
- True Width
- 17.6 m
- From
- 610 m
- To
- 632 m
- Hole Depth
- 732 m
- Intercept Depth
- 76 m
Classification
- Deposit Type
- other
- Program
- resource
- Sample Type
- drill
- Group ID
- SPRD-04:610-632
- Mining Method
- underground
Location
- Location
- Central Zone
- Easting
- 407402.94
- Northing
- 7440953.06
- CRS
- WGS84 UTM
- Elevation
- 1268.16 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Metal Equivalent
- Assumptions Disclosed
- No
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-06-08T00:00:00.000Z
Reasoning: This silver intercept is below the company's average and peer 25th percentile, indicating low materiality for silver at this grade.
Positive factors
- True width estimated at 80% of downhole length
Negative factors
- Silver grade (9.2 g/t) is below the company's average and peer 25th percentile
- No specific cut-off grade used for grade width calculations
Evidence · table
“9.2”
Context: 22
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 17.6
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
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
SPRD-05Pampa Medina · copperGrade: 0.4Grade Unit: %Intercept: 22 mView all detailsHide details
Identity
- Hole ID
- SPRD-05
- Project
- Pampa Medina
- Commodity
- copper
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 0.4
- Grade Unit
- %
- Intercept
- 22 m
- True Width
- 17.6 m
- From
- 60 m
- To
- 82 m
- Hole Depth
- 836 m
- Intercept Depth
- 60 m
Classification
- Deposit Type
- other
- Program
- resource
- Sample Type
- drill
- Group ID
- SPRD-05:60-82
- Mining Method
- underground
Location
- Location
- Central Zone
- Easting
- 406796.25
- Northing
- 7440950.99
- CRS
- WGS84 UTM
- Elevation
- 1274.79 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Metal Equivalent
- Assumptions Disclosed
- No
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-06-08T00:00:00.000Z
Reasoning: This copper intercept, while not the highest grade, is considered strong for a manto-type deposit and contributes to the overall resource definition. The true width estimate adds confidence.
Positive factors
- Copper grade (0.40%) is strong for a porphyry deposit type
- True width estimated at 80% of downhole length
Negative factors
- No specific cut-off grade used for grade width calculations
Evidence · table
“0.40”
Context: 22
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 17.6
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
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
SPRD-05Pampa Medina · silverGrade: 1.9Grade Unit: g/tIntercept: 22 mView all detailsHide details
Identity
- Hole ID
- SPRD-05
- Project
- Pampa Medina
- Commodity
- silver
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 1.9
- Grade Unit
- g/t
- Intercept
- 22 m
- True Width
- 17.6 m
- From
- 60 m
- To
- 82 m
- Hole Depth
- 836 m
- Intercept Depth
- 60 m
Classification
- Deposit Type
- other
- Program
- resource
- Sample Type
- drill
- Group ID
- SPRD-05:60-82
- Mining Method
- underground
Location
- Location
- Central Zone
- Easting
- 406796.25
- Northing
- 7440950.99
- CRS
- WGS84 UTM
- Elevation
- 1274.79 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Metal Equivalent
- Assumptions Disclosed
- No
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-06-08T00:00:00.000Z
Reasoning: This silver intercept is significantly below the company's average and peer 25th percentile, indicating low materiality for silver at this grade.
Positive factors
- True width estimated at 80% of downhole length
Negative factors
- Silver grade (1.9 g/t) is significantly below the company's average and peer 25th percentile
- No specific cut-off grade used for grade width calculations
Evidence · table
“1.9”
Context: 22
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 17.6
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
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
SPRD-05Pampa Medina · copperGrade: 0.3Grade Unit: %Intercept: 24 mView all detailsHide details
Identity
- Hole ID
- SPRD-05
- Project
- Pampa Medina
- Commodity
- copper
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 0.3
- Grade Unit
- %
- Intercept
- 24 m
- True Width
- 19.2 m
- From
- 204 m
- To
- 228 m
- Hole Depth
- 836 m
- Intercept Depth
- 60 m
Classification
- Deposit Type
- other
- Program
- resource
- Sample Type
- drill
- Group ID
- SPRD-05:204-228
- Mining Method
- underground
Location
- Location
- Central Zone
- Easting
- 406796.25
- Northing
- 7440950.99
- CRS
- WGS84 UTM
- Elevation
- 1274.79 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Metal Equivalent
- Assumptions Disclosed
- No
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-06-08T00:00:00.000Z
Reasoning: This copper intercept, while not the highest grade, is considered strong for a manto-type deposit and contributes to the overall resource definition. The true width estimate adds confidence.
Positive factors
- Copper grade (0.30%) is strong for a porphyry deposit type
- True width estimated at 80% of downhole length
Negative factors
- No specific cut-off grade used for grade width calculations
Evidence · table
“0.30”
Context: 24
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 19.2
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
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
SPRD-05Pampa Medina · silverGrade: 1.8Grade Unit: g/tIntercept: 24 mView all detailsHide details
Identity
- Hole ID
- SPRD-05
- Project
- Pampa Medina
- Commodity
- silver
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 1.8
- Grade Unit
- g/t
- Intercept
- 24 m
- True Width
- 19.2 m
- From
- 204 m
- To
- 228 m
- Hole Depth
- 836 m
- Intercept Depth
- 60 m
Classification
- Deposit Type
- other
- Program
- resource
- Sample Type
- drill
- Group ID
- SPRD-05:204-228
- Mining Method
- underground
Location
- Location
- Central Zone
- Easting
- 406796.25
- Northing
- 7440950.99
- CRS
- WGS84 UTM
- Elevation
- 1274.79 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Metal Equivalent
- Assumptions Disclosed
- No
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-06-08T00:00:00.000Z
Reasoning: This silver intercept is significantly below the company's average and peer 25th percentile, indicating low materiality for silver at this grade.
Positive factors
- True width estimated at 80% of downhole length
Negative factors
- Silver grade (1.8 g/t) is significantly below the company's average and peer 25th percentile
- No specific cut-off grade used for grade width calculations
Evidence · table
“1.8”
Context: 24
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 19.2
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
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
SPRD-05Pampa Medina · copperGrade: 0.93Grade Unit: %Intercept: 132 mView all detailsHide details
Identity
- Hole ID
- SPRD-05
- Project
- Pampa Medina
- Commodity
- copper
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 0.93
- Grade Unit
- %
- Intercept
- 132 m
- True Width
- 105.6 m
- From
- 692 m
- To
- 824 m
- Hole Depth
- 836 m
- Intercept Depth
- 60 m
Classification
- Deposit Type
- other
- Program
- resource
- Sample Type
- drill
- Group ID
- SPRD-05:692-824
- Mining Method
- underground
Location
- Location
- Central Zone
- Easting
- 406796.25
- Northing
- 7440950.99
- CRS
- WGS84 UTM
- Elevation
- 1274.79 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Metal Equivalent
- Assumptions Disclosed
- No
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-06-08T00:00:00.000Z
Reasoning: This exceptional copper intercept over a significant length is highly material for resource potential and indicates strong mineralization at depth. The true width estimate adds confidence.
Positive factors
- Copper grade (0.93%) is exceptional for a porphyry deposit type
- Significant intercept length (132m) demonstrating broad mineralization
- True width estimated at 80% of downhole length
Negative factors
- No specific cut-off grade used for grade width calculations
Evidence · table
“0.93”
Context: 132
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 105.6
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
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
SPRD-05Pampa Medina · silverGrade: 8.6Grade Unit: g/tIntercept: 132 mView all detailsHide details
Identity
- Hole ID
- SPRD-05
- Project
- Pampa Medina
- Commodity
- silver
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 8.6
- Grade Unit
- g/t
- Intercept
- 132 m
- True Width
- 105.6 m
- From
- 692 m
- To
- 824 m
- Hole Depth
- 836 m
- Intercept Depth
- 60 m
Classification
- Deposit Type
- other
- Program
- resource
- Sample Type
- drill
- Group ID
- SPRD-05:692-824
- Mining Method
- underground
Location
- Location
- Central Zone
- Easting
- 406796.25
- Northing
- 7440950.99
- CRS
- WGS84 UTM
- Elevation
- 1274.79 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Metal Equivalent
- Assumptions Disclosed
- No
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-06-08T00:00:00.000Z
Reasoning: This silver intercept is below the company's average and peer 25th percentile, indicating low materiality for silver at this grade.
Positive factors
- True width estimated at 80% of downhole length
Negative factors
- Silver grade (8.6 g/t) is below the company's average and peer 25th percentile
- No specific cut-off grade used for grade width calculations
Evidence · table
“8.6”
Context: 132
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 105.6
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
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
SPRD-05Pampa Medina · copperGrade: 1.19Grade Unit: %Intercept: 96 mView all detailsHide details
Identity
- Hole ID
- SPRD-05
- Project
- Pampa Medina
- Commodity
- copper
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 1.19
- Grade Unit
- %
- Intercept
- 96 m
- True Width
- 76.8 m
- From
- 692 m
- To
- 788 m
- Hole Depth
- 836 m
- Intercept Depth
- 60 m
Classification
- Deposit Type
- other
- Program
- resource
- Sample Type
- drill
- Group ID
- SPRD-05:692-788
- Mining Method
- underground
Location
- Location
- Central Zone
- Easting
- 406796.25
- Northing
- 7440950.99
- CRS
- WGS84 UTM
- Elevation
- 1274.79 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Metal Equivalent
- Assumptions Disclosed
- No
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-06-08T00:00:00.000Z
Reasoning: This exceptional copper intercept over a significant length is highly material for resource potential and indicates strong mineralization at depth. The true width estimate adds confidence.
Positive factors
- Copper grade (1.19%) is exceptional for a porphyry deposit type
- Significant intercept length (96m) demonstrating strong continuity
- True width estimated at 80% of downhole length
Negative factors
- No specific cut-off grade used for grade width calculations
Evidence · table
“1.19”
Context: 96
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 76.8
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
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
SPRD-05Pampa Medina · silverGrade: 11.7Grade Unit: g/tIntercept: 96 mView all detailsHide details
Identity
- Hole ID
- SPRD-05
- Project
- Pampa Medina
- Commodity
- silver
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 11.7
- Grade Unit
- g/t
- Intercept
- 96 m
- True Width
- 76.8 m
- From
- 692 m
- To
- 788 m
- Hole Depth
- 836 m
- Intercept Depth
- 60 m
Classification
- Deposit Type
- other
- Program
- resource
- Sample Type
- drill
- Group ID
- SPRD-05:692-788
- Mining Method
- underground
Location
- Location
- Central Zone
- Easting
- 406796.25
- Northing
- 7440950.99
- CRS
- WGS84 UTM
- Elevation
- 1274.79 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Metal Equivalent
- Assumptions Disclosed
- No
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-06-08T00:00:00.000Z
Reasoning: This silver intercept is below the company's average and peer 25th percentile, indicating low materiality for silver at this grade.
Positive factors
- True width estimated at 80% of downhole length
Negative factors
- Silver grade (11.7 g/t) is below the company's average and peer 25th percentile
- No specific cut-off grade used for grade width calculations
Evidence · table
“11.7”
Context: 96
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 76.8
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
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
SPRD-05Pampa Medina · copperGrade: 1.8Grade Unit: %Intercept: 60 mView all detailsHide details
Identity
- Hole ID
- SPRD-05
- Project
- Pampa Medina
- Commodity
- copper
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 1.8
- Grade Unit
- %
- Intercept
- 60 m
- True Width
- 48 m
- From
- 694 m
- To
- 754 m
- Hole Depth
- 836 m
- Intercept Depth
- 60 m
Classification
- Deposit Type
- other
- Program
- resource
- Sample Type
- drill
- Group ID
- SPRD-05:694-754
- Mining Method
- underground
Location
- Location
- Central Zone
- Easting
- 406796.25
- Northing
- 7440950.99
- CRS
- WGS84 UTM
- Elevation
- 1274.79 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Metal Equivalent
- Assumptions Disclosed
- No
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-06-08T00:00:00.000Z
Reasoning: This exceptional copper intercept over a significant length is highly material for resource potential and indicates strong mineralization at depth. The true width estimate adds confidence.
Positive factors
- Copper grade (1.80%) is exceptional for a porphyry deposit type
- Significant intercept length (60m) demonstrating strong continuity
- True width estimated at 80% of downhole length
Negative factors
- No specific cut-off grade used for grade width calculations
Evidence · table
“1.80”
Context: 60
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 48
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
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
SPRD-05Pampa Medina · silverGrade: 18.4Grade Unit: g/tIntercept: 60 mView all detailsHide details
Identity
- Hole ID
- SPRD-05
- Project
- Pampa Medina
- Commodity
- silver
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 18.4
- Grade Unit
- g/t
- Intercept
- 60 m
- True Width
- 48 m
- From
- 694 m
- To
- 754 m
- Hole Depth
- 836 m
- Intercept Depth
- 60 m
Classification
- Deposit Type
- other
- Program
- resource
- Sample Type
- drill
- Group ID
- SPRD-05:694-754
- Mining Method
- underground
Location
- Location
- Central Zone
- Easting
- 406796.25
- Northing
- 7440950.99
- CRS
- WGS84 UTM
- Elevation
- 1274.79 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Metal Equivalent
- Assumptions Disclosed
- No
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-06-08T00:00:00.000Z
Reasoning: This silver intercept is below the company's average and peer 25th percentile, indicating moderate materiality for silver at this grade, but not exceptional.
Positive factors
- True width estimated at 80% of downhole length
Negative factors
- Silver grade (18.4 g/t) is below the company's average and peer 25th percentile
- No specific cut-off grade used for grade width calculations
Evidence · table
“18.4”
Context: 60
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 48
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
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
SPRD-05Pampa Medina · copperGrade: 5.7Grade Unit: %Intercept: 16 mView all detailsHide details
Identity
- Hole ID
- SPRD-05
- Project
- Pampa Medina
- Commodity
- copper
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 5.7
- Grade Unit
- %
- Intercept
- 16 m
- True Width
- 12.8 m
- From
- 704 m
- To
- 720 m
- Hole Depth
- 836 m
- Intercept Depth
- 60 m
Classification
- Deposit Type
- other
- Program
- resource
- Sample Type
- drill
- Group ID
- SPRD-05:704-720
- Mining Method
- underground
Location
- Location
- Central Zone
- Easting
- 406796.25
- Northing
- 7440950.99
- CRS
- WGS84 UTM
- Elevation
- 1274.79 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Metal Equivalent
- Assumptions Disclosed
- No
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-06-08T00:00:00.000Z
Reasoning: This exceptional copper intercept is highly material and novel, representing a significant high-grade zone that exceeds previous best results for the company. The true width estimate adds confidence.
Positive factors
- Copper grade (5.70%) is exceptional for a porphyry deposit type and significantly above prior best results
- Intercept length (16m) is strong continuity
- True width estimated at 80% of downhole length
Negative factors
- No specific cut-off grade used for grade width calculations
Evidence · table
“5.70”
Context: 16
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 12.8
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
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
SPRD-05Pampa Medina · silverGrade: 62.6Grade Unit: g/tIntercept: 16 mView all detailsHide details
Identity
- Hole ID
- SPRD-05
- Project
- Pampa Medina
- Commodity
- silver
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 62.6
- Grade Unit
- g/t
- Intercept
- 16 m
- True Width
- 12.8 m
- From
- 704 m
- To
- 720 m
- Hole Depth
- 836 m
- Intercept Depth
- 60 m
Classification
- Deposit Type
- other
- Program
- resource
- Sample Type
- drill
- Group ID
- SPRD-05:704-720
- Mining Method
- underground
Location
- Location
- Central Zone
- Easting
- 406796.25
- Northing
- 7440950.99
- CRS
- WGS84 UTM
- Elevation
- 1274.79 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Metal Equivalent
- Assumptions Disclosed
- No
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-06-08T00:00:00.000Z
Reasoning: This silver intercept is highly material and novel, significantly exceeding previous best results for the company, although it is below the peer 75th percentile. The true width estimate adds confidence.
Positive factors
- Silver grade (62.6 g/t) is significantly above the company's average and prior best results
- True width estimated at 80% of downhole length
Negative factors
- Silver grade (62.6 g/t) is below the peer 75th percentile
- No specific cut-off grade used for grade width calculations
Evidence · table
“62.6”
Context: 16
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 12.8
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
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
SPRD-05Pampa Medina · copperGrade: 11.32Grade Unit: %Intercept: 4 mView all detailsHide details
Identity
- Hole ID
- SPRD-05
- Project
- Pampa Medina
- Commodity
- copper
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 11.32
- Grade Unit
- %
- Intercept
- 4 m
- True Width
- 3.2 m
- From
- 706 m
- To
- 710 m
- Hole Depth
- 836 m
- Intercept Depth
- 60 m
Classification
- Deposit Type
- other
- Program
- resource
- Sample Type
- drill
- Group ID
- SPRD-05:706-710
- Mining Method
- underground
Location
- Location
- Central Zone
- Easting
- 406796.25
- Northing
- 7440950.99
- CRS
- WGS84 UTM
- Elevation
- 1274.79 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Metal Equivalent
- Assumptions Disclosed
- No
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-06-08T00:00:00.000Z
Reasoning: This ultra-high-grade copper intercept is highly material and novel, representing one of the strongest bornite-mineralized manto intersections to date and significantly exceeding previous best results for the company. The true width estimate adds confidence.
Positive factors
- Copper grade (11.32%) is exceptional for a porphyry deposit type and significantly above prior best results
- True width estimated at 80% of downhole length
Negative factors
- No specific cut-off grade used for grade width calculations
Evidence · table
“11.32”
Context: 4
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 3.2
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
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
SPRD-05Pampa Medina · silverGrade: 144Grade Unit: g/tIntercept: 4 mView all detailsHide details
Identity
- Hole ID
- SPRD-05
- Project
- Pampa Medina
- Commodity
- silver
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 144
- Grade Unit
- g/t
- Intercept
- 4 m
- True Width
- 3.2 m
- From
- 706 m
- To
- 710 m
- Hole Depth
- 836 m
- Intercept Depth
- 60 m
Classification
- Deposit Type
- other
- Program
- resource
- Sample Type
- drill
- Group ID
- SPRD-05:706-710
- Mining Method
- underground
Location
- Location
- Central Zone
- Easting
- 406796.25
- Northing
- 7440950.99
- CRS
- WGS84 UTM
- Elevation
- 1274.79 m
- Azimuth
- 270 °
- Dip
- -60 °
- Loc. Confidence
- high
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks, duplicates
Metal Equivalent
- Assumptions Disclosed
- No
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-06-08T00:00:00.000Z
Reasoning: This high-grade silver intercept is highly material and novel, significantly exceeding previous best results for the company and ranking well against peer deposits. The true width estimate adds confidence.
Positive factors
- Silver grade (144.0 g/t) is strong compared to peer 75th percentile and significantly above company's prior best results
- True width estimated at 80% of downhole length
Negative factors
- No specific cut-off grade used for grade width calculations
Evidence · table
“144.0”
Context: 4
Tags used in scoring
True Width Disclosedpositive
Actual thickness perpendicular to structure is stated, not just downhole length.
Why it applies: true_width_m is 3.2
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
Infill Drillingneutral
Confirmatory drilling to raise resource confidence, not new discovery.
Why it applies: drill_program_type is "resource"
SPRD-06Pampa Medina · copperGrade: 1.19Grade Unit: %Intercept: 96 mView all detailsHide details
Identity
- Hole ID
- SPRD-06
- Project
- Pampa Medina
- Commodity
- copper
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 1.19
- Grade Unit
- %
- Intercept
- 96 m
- From
- 692 m
- To
- 788 m
Classification
- Deposit Type
- other
- Sample Type
- drill
Location
- Location
- Central Zone
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- 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
- 2026-06-08T00:00:00.000Z
Reasoning: This copper intercept, while not the highest grade, is considered strong for a manto-type deposit and contributes to the overall resource definition. The true width estimate adds confidence.
Positive factors
- Copper grade (0.35%) is strong for a porphyry deposit type
- True width estimated at 80% of downhole length
Negative factors
- No specific cut-off grade used for grade width calculations
Evidence · text
“96m of 1.19% Cu and 11.7g/t Ag from 692m”
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
SPRD-06Pampa Medina · copperGrade: 1.8Grade Unit: %Intercept: 60 mView all detailsHide details
Identity
- Hole ID
- SPRD-06
- Project
- Pampa Medina
- Commodity
- copper
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 1.8
- Grade Unit
- %
- Intercept
- 60 m
- From
- 694 m
- To
- 754 m
Classification
- Deposit Type
- other
- Sample Type
- drill
Location
- Location
- Central Zone
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- 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
- 2026-06-08T00:00:00.000Z
Reasoning: This copper intercept, while not the highest grade, is considered strong for a manto-type deposit and contributes to the overall resource definition. The true width estimate adds confidence.
Positive factors
- Copper grade (0.35%) is strong for a porphyry deposit type
- True width estimated at 80% of downhole length
Negative factors
- No specific cut-off grade used for grade width calculations
Evidence · text
“60m of 1.80% Cu and 18.4g/t Ag from 694m”
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
SPRD-06Pampa Medina · copperGrade: 5.7Grade Unit: %Intercept: 16 mView all detailsHide details
Identity
- Hole ID
- SPRD-06
- Project
- Pampa Medina
- Commodity
- copper
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 5.7
- Grade Unit
- %
- Intercept
- 16 m
- From
- 704 m
- To
- 720 m
Classification
- Deposit Type
- other
- Sample Type
- drill
Location
- Location
- Central Zone
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- 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
- 2026-06-08T00:00:00.000Z
Reasoning: This copper intercept, while not the highest grade, is considered strong for a manto-type deposit and contributes to the overall resource definition. The true width estimate adds confidence.
Positive factors
- Copper grade (0.35%) is strong for a porphyry deposit type
- True width estimated at 80% of downhole length
Negative factors
- No specific cut-off grade used for grade width calculations
Evidence · text
“16m of 5.70% Cu and 62.6g/t Ag from 704m”
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
SPRD-06Pampa Medina · copperGrade: 11.32Grade Unit: %Intercept: 4 mView all detailsHide details
Identity
- Hole ID
- SPRD-06
- Project
- Pampa Medina
- Commodity
- copper
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 11.32
- Grade Unit
- %
- Intercept
- 4 m
- From
- 706 m
- To
- 710 m
Classification
- Deposit Type
- other
- Sample Type
- drill
Location
- Location
- Central Zone
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- 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
- 2026-06-08T00:00:00.000Z
Reasoning: This copper intercept, while not the highest grade, is considered strong for a manto-type deposit and contributes to the overall resource definition. The true width estimate adds confidence.
Positive factors
- Copper grade (0.35%) is strong for a porphyry deposit type
- True width estimated at 80% of downhole length
Negative factors
- No specific cut-off grade used for grade width calculations
Evidence · text
“4m of 11.32% Cu and 144.0g/t Ag from 706m”
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
SPRD-06Pampa Medina · copperGrade: 0.4Grade Unit: %Intercept: 22 mView all detailsHide details
Identity
- Hole ID
- SPRD-06
- Project
- Pampa Medina
- Commodity
- copper
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 0.4
- Grade Unit
- %
- Intercept
- 22 m
- From
- 60 m
- To
- 82 m
Classification
- Deposit Type
- other
- Sample Type
- drill
Location
- Location
- Central Zone
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- 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
- 2026-06-08T00:00:00.000Z
Reasoning: This copper intercept, while not the highest grade, is considered strong for a manto-type deposit and contributes to the overall resource definition. The true width estimate adds confidence.
Positive factors
- Copper grade (0.35%) is strong for a porphyry deposit type
- True width estimated at 80% of downhole length
Negative factors
- No specific cut-off grade used for grade width calculations
Evidence · text
“22m of 0.40% Cu and 1.9g/t Ag from 60m”
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
SPRD-06Pampa Medina · copperGrade: 0.3Grade Unit: %Intercept: 24 mView all detailsHide details
Identity
- Hole ID
- SPRD-06
- Project
- Pampa Medina
- Commodity
- copper
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 0.3
- Grade Unit
- %
- Intercept
- 24 m
- From
- 204 m
- To
- 228 m
Classification
- Deposit Type
- other
- Sample Type
- drill
Location
- Location
- Central Zone
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- 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
- 2026-06-08T00:00:00.000Z
Reasoning: This copper intercept, while not the highest grade, is considered strong for a manto-type deposit and contributes to the overall resource definition. The true width estimate adds confidence.
Positive factors
- Copper grade (0.35%) is strong for a porphyry deposit type
- True width estimated at 80% of downhole length
Negative factors
- No specific cut-off grade used for grade width calculations
Evidence · text
“24m of 0.30% Cu and 1.8g/t Ag from 204m”
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
SPRD-06Pampa Medina · copperGrade: 1.97Grade Unit: %Intercept: 22 mView all detailsHide details
Identity
- Hole ID
- SPRD-06
- Project
- Pampa Medina
- Commodity
- copper
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 1.97
- Grade Unit
- %
- Intercept
- 22 m
- From
- 610 m
- To
- 632 m
Classification
- Deposit Type
- other
- Sample Type
- drill
Location
- Location
- Central Zone
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- 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
- 2026-06-08T00:00:00.000Z
Reasoning: This copper intercept, while not the highest grade, is considered strong for a manto-type deposit and contributes to the overall resource definition. The true width estimate adds confidence.
Positive factors
- Copper grade (0.35%) is strong for a porphyry deposit type
- True width estimated at 80% of downhole length
Negative factors
- No specific cut-off grade used for grade width calculations
Evidence · text
“22m of 1.97% Cu and 9.2g/t Ag from 610m”
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
SPRD-06Pampa Medina · copperGrade: 0.35Grade Unit: %Intercept: 140 mView all detailsHide details
Identity
- Hole ID
- SPRD-06
- Project
- Pampa Medina
- Commodity
- copper
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 0.35
- Grade Unit
- %
- Intercept
- 140 m
- From
- 366 m
- To
- 506 m
Classification
- Deposit Type
- other
- Sample Type
- drill
Location
- Location
- Central Zone
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- 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
- 2026-06-08T00:00:00.000Z
Reasoning: This copper intercept, while not the highest grade, is considered strong for a manto-type deposit and contributes to the overall resource definition. The true width estimate adds confidence.
Positive factors
- Copper grade (0.35%) is strong for a porphyry deposit type
- True width estimated at 80% of downhole length
Negative factors
- No specific cut-off grade used for grade width calculations
Evidence · text
“140m of 0.35% Cu from 366m”
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
SPRD-06Pampa Medina · copperGrade: 0.71Grade Unit: %Intercept: 32 mView all detailsHide details
Identity
- Hole ID
- SPRD-06
- Project
- Pampa Medina
- Commodity
- copper
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 0.71
- Grade Unit
- %
- Intercept
- 32 m
- From
- 468 m
- To
- 500 m
Classification
- Deposit Type
- other
- Sample Type
- drill
Location
- Location
- Central Zone
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- 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
- 2026-06-08T00:00:00.000Z
Reasoning: This copper intercept, while not the highest grade, is considered strong for a manto-type deposit and contributes to the overall resource definition. The true width estimate adds confidence.
Positive factors
- Copper grade (0.35%) is strong for a porphyry deposit type
- True width estimated at 80% of downhole length
Negative factors
- No specific cut-off grade used for grade width calculations
Evidence · text
“32m of 0.71% Cu and 4.1 g/t Ag from 468m”
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
SPRD-06Pampa Medina · copperGrade: 0.95Grade Unit: %Intercept: 10 mView all detailsHide details
Identity
- Hole ID
- SPRD-06
- Project
- Pampa Medina
- Commodity
- copper
- Region
- chile
- Reported Region
- chile
- Ticker
- MARI
Geometry
- Grade
- 0.95
- Grade Unit
- %
- Intercept
- 10 m
- From
- 484 m
- To
- 494 m
Classification
- Deposit Type
- other
- Sample Type
- drill
Location
- Location
- Central Zone
- Loc. Source
- document
QA/QC
- Laboratory
- Andes Analytical Assay Ltd. (AAA)
- 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
- 2026-06-08T00:00:00.000Z
Reasoning: This copper intercept, while not the highest grade, is considered strong for a manto-type deposit and contributes to the overall resource definition. The true width estimate adds confidence.
Positive factors
- Copper grade (0.35%) is strong for a porphyry deposit type
- True width estimated at 80% of downhole length
Negative factors
- No specific cut-off grade used for grade width calculations
Evidence · text
“10m of 0.95% Cu and 7.4g/t Ag from 484m”
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.