Update on GPS Drilling Programs
Original announcement by tmx on
- Company
- Great Plains Metals Corp.
- Ticker
- GPS
- Exchange
- TSX
- Region
- New South Wales
- Primary commodity
- Copper
- Secondary commodities
- Gold, Molybdenum
- Document categories
- Drill results, Other
- Extracted
- 2026-09-16 02:34:50 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Great Plains Metals Corp. has reported encouraging geological logging from drill hole GGDD004 at the Goodrich porphyry copper-gold project, identifying classic porphyry signatures including chalcopyrite-bearing cupolas. While specific assay results for the new drilling are pending, the company is also reviewing historical core that contains significant unassayed intervals.
Reasoning: The release reports significant geological indicators of a porphyry system (USTs and visible chalcopyrite) in GGDD004, though actual grades are pending assay results. The discovery of unassayed historical core adds potential upside.
Positive factors
- identification of porphyry signatures (USTs and chalcopyrite)
- discovery of unassayed historical core
- extension of known mineralization potential
Negative factors
- lack of quantitative assay results for GGDD004
- weak mineralization at Everton project
Facts used in scoring: 2
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: The release mentions a Qualified Person (Douglas Kirwin) has reviewed the technical data.
Evidence · text
“has been reviewed and approved by Douglas Kirwin, who serves as the qualified person (QP)”
Nearology Playneutral
Value premise rests on proximity to a known deposit rather than own results.
Why it applies: The company discusses the potential for the new drilling to be a southern extension of the high-grade ore previously mined at Goodrich.
Evidence · text
“whether the copper and gold mineralization intersected in GGDD004 is a southern extension of the high-grade ore previously mined at Goodrich”
Extracted facts
Stored fact records: 2. Some facts used in scoring do not have a stored record.
Drill Results (2)
GGDD004Goodrich · copperIntercept: 158.2 mNeeds review: ungroundedView all detailsHide details
Identity
- Hole ID
- GGDD004
- Project
- Goodrich
- Commodity
- copper
- Region
- australia_nsw
- Reported Region
- australia_nsw
- Ticker
- GPS
Geometry
- Intercept
- 158.2 m
- From
- 81.8 m
- To
- 240 m
- Hole Depth
- 218 m
- Intercept Depth
- 81.8 m
Classification
- Deposit Type
- porphyry
- Program
- exploration
- Sample Type
- drill
- Group ID
- GGDD004:81.8-240
- Mining Method
- open_pit
QA/QC
- QP Signed
- Yes
Review
- Needs Review
- Yes
- Review Reason
- ungrounded
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-07-14T00:00:00.000Z
Reasoning: Intercept contains visible chalcopyrite in a porphyry setting, but grade is not yet quantified.
Positive factors
- visible chalcopyrite
- porphyry signatures
Negative factors
- assay results pending
Evidence · text
“81.8 – 240.0 meters (Mineralized Porphyry): ... hosting widespread disseminated chalcopyrite.”
Tags used in scoring
No QA/QC Disclosurenegative
Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document.
Why it applies: qaqc_disclosed is not true
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
GGDD004Goodrich · goldIntercept: 158.2 mView all detailsHide details
Identity
- Hole ID
- GGDD004
- Project
- Goodrich
- Commodity
- gold
- Region
- australia_nsw
- Reported Region
- australia_nsw
- Ticker
- GPS
Geometry
- Intercept
- 158.2 m
- From
- 81.8 m
- To
- 240 m
- Hole Depth
- 218 m
- Intercept Depth
- 81.8 m
Classification
- Deposit Type
- porphyry
- Program
- exploration
- Sample Type
- drill
- Group ID
- GGDD004:81.8-240
- Mining Method
- open_pit
QA/QC
- QP Signed
- Yes
Review
- Needs Review
- No
- Interp. Status
- scored
- Historical
- No
Dates
- Event date
- 2026-07-14T00:00:00.000Z
Reasoning: Gold is part of the porphyry system but specific grades are pending.
Positive factors
- associated with copper porphyry
Negative factors
- assay results pending
Evidence · text
“The geological setting of the disseminated porphyry copper-gold mineralization is not well understood”
Tags used in scoring
No QA/QC Disclosurenegative
Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document.
Why it applies: qaqc_disclosed is not true
Cut-off Undisclosednegative
High-grade interval reported without stating the cut-off grade used for compositing.
Why it applies: no cutoff_grade was stated
How Atlas produces this analysis
Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.