Riverside Resources and Questcorp Chip-Channel Sample High Grade Gold-Silver 30m @ 20 g/t Gold and 226 g/t Silver and Announce Drill Results from Union Project
Original announcement by tmx on
- Company
- Riverside Resources Inc.
- Ticker
- RRI
- Exchange
- TSX
- Region
- Sonora, Mexico
- Primary commodity
- Gold
- Secondary commodities
- Silver, Zinc, Lead
- Document categories
- Drill results, Agreement transaction
- Extracted
- 2026-09-18 18:57:49 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Riverside Resources announced high-grade chip-channel sampling at the Union Project in Sonora, Mexico, returning 20 g/t gold and 226 g/t silver over 30 metres. The company also reported Phase 1 drill results, including the discovery of Carlin-like sediment-hosted gold indicators at the Luis Hill target.
Reasoning: The release reports high-grade surface sampling and significant new geological findings (SHGD style) that expand the project's potential beyond the initial CRD target.
Positive factors
- High-grade chip-channel sampling (20 g/t Au)
- Discovery of new sediment-hosted gold (SHGD) style at Luis Hill
- Successful identification of CRD-style mineralization across multiple targets
- Presence of multiple metals (Au, Ag, Zn, Pb) consistent with regional targets
Negative factors
- Channel sampling does not represent true width
- Drilling lost in underground workings at Union Mine
Facts used in scoring: 6
Classification and evidence
Bonanza Interceptpositive
Exceptionally high-grade zone, well above the deposit-type norm.
Why it applies: 30m chip-channel sampling at 20 g/t Au is exceptionally high grade for the region.
Evidence · text
“30m grading 20 g/t Au and 226 g/t Ag”
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 high-grade channel sample is noted as not representing true width.
Evidence · text
“Channel sampling along the mine adit entrance access wall and does not represent true width”
QA/QC Disclosedpositive
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: Release details lab names, standards, blanks, and duplicates.
Evidence · text
“Standards were inserted every 20 samples and blanks every 100 samples. The laboratory also duplicated every 20 samples”
Step-Out Extensionpositive
Mineralization extended beyond the previously known limit.
Why it applies: Discovery of SHGD-style mineralization at Luis Hill represents a new finding for this part of Sonora.
Evidence · text
“This represents a new finding for this part of Sonora and is significant for both the property and the region”
Extracted facts
Stored fact records: 6. Some facts used in scoring do not have a stored record.
Drill Results (6)
Fact 1Union · goldGrade: 20Grade Unit: g/tIntercept: 30 mView all detailsHide details
Identity
- Project
- Union
- Commodity
- gold
- Region
- mexico
- Reported Region
- mexico
- Ticker
- RRI
Geometry
- Grade
- 20
- Grade Unit
- g/t
- Intercept
- 30 m
Classification
- Sample Type
- channel
Location
- Location
- Union Mine Area
- Loc. Source
- document
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-01-22T00:00:00.000Z
Reasoning: Very high grade intercept in a continuous channel sample.
Positive factors
- High grade over significant width
Negative factors
- Apparent width only
Evidence · text
“30m grading 20 g/t Au and 226 g/t Ag”
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
Fact 2Union · silverGrade: 226Grade Unit: g/tIntercept: 30 mView all detailsHide details
Identity
- Project
- Union
- Commodity
- silver
- Region
- mexico
- Reported Region
- mexico
- Ticker
- RRI
Geometry
- Grade
- 226
- Grade Unit
- g/t
- Intercept
- 30 m
Classification
- Sample Type
- channel
Location
- Location
- Union Mine Area
- Loc. Source
- document
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-01-22T00:00:00.000Z
Reasoning: Significant silver grade accompanying the gold in the channel sample.
Positive factors
- Strong silver credits
Evidence · text
“30m grading 20 g/t Au and 226 g/t Ag”
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
Fact 3Union · zincGrade: 2.7Grade Unit: %Intercept: 30 mView all detailsHide details
Identity
- Project
- Union
- Commodity
- zinc
- Region
- mexico
- Reported Region
- mexico
- Ticker
- RRI
Geometry
- Grade
- 2.7
- Grade Unit
- %
- Intercept
- 30 m
Classification
- Sample Type
- channel
Location
- Location
- Union Mine Area
- Loc. Source
- document
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-01-22T00:00:00.000Z
Reasoning: Zinc grade supports the Carbonate Replacement Deposit (CRD) target.
Positive factors
- Presence of zinc supports CRD model
Evidence · text
“20.2 g/t Au and 226 g/t Ag with 2.7% Zn in 30 m long continuous chip-channel”
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
9Union · goldGrade: 0.3Grade Unit: g/tIntercept: 42 mView all detailsHide details
Identity
- Hole ID
- 9
- Project
- Union
- Commodity
- gold
- Region
- mexico
- Reported Region
- mexico
- Ticker
- RRI
Geometry
- Grade
- 0.3
- Grade Unit
- g/t
- Intercept
- 42 m
Classification
- Program
- exploration
- Sample Type
- drill
Location
- Location
- Luis Hill
- Loc. Source
- document
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-01-22T00:00:00.000Z
Reasoning: While grade is low, the discovery of a new mineralization style (SHGD) in this region is highly significant.
Positive factors
- Discovery of new SHGD style mineralization
- Thick continuous interval
Evidence · text
“42 m at 0.3 g/t gold in black shales and carbonate strata”
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
8Union · zincGrade: 214Grade Unit: ppmIntercept: 15.85 mView all detailsHide details
Identity
- Hole ID
- 8
- Project
- Union
- Commodity
- zinc
- Region
- mexico
- Reported Region
- mexico
- Ticker
- RRI
Geometry
- Grade
- 214
- Grade Unit
- ppm
- Intercept
- 15.85 m
Classification
- Sample Type
- drill
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-01-22T00:00:00.000Z
Reasoning: Zinc intercept in dolomitized limestone within the Union Mine area.
Positive factors
- Indicates CRD-related metals
Evidence · text
“15.85m averaging 214 ppm Zn in dolomitized limestone”
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
7Union · zincGrade: 0.1Grade Unit: %Intercept: 14 mView all detailsHide details
Identity
- Hole ID
- 7
- Project
- Union
- Commodity
- zinc
- Region
- mexico
- Reported Region
- mexico
- Ticker
- RRI
Geometry
- Grade
- 0.1
- Grade Unit
- %
- Intercept
- 14 m
Classification
- Sample Type
- drill
QA/QC
- QA/QC Disclosed
- Yes
- QP Signed
- Yes
- QA/QC Methods
- standards, blanks
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-01-22T00:00:00.000Z
Reasoning: Zinc intercept in the Union Mine area.
Positive factors
- Zinc mineralization identified
Evidence · text
“14m averaging 0.1% Zn”
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.