# Great Plains Metals Confirms "Pencil Porphyry" Discovery with a 128-meter Intercept at Goodrich Project, NSW Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/great-plains-metals-confirms-pencil-porphyry-discovery-with-a-128-meter-intercep--117c19ea-8c40-4344-8094-9c0b07b2c6ec Original source: https://money.tmx.com/en/quote/GPS/news/6409896897372305/great-plains-metals-confirms-pencil-porphyry-discovery-with-a-128-meter-intercep Publisher: tmx Original announcement: 2026-07-28T07:05:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Great Plains Metals Corp. - Ticker: GPS - Exchange: TSX - Region: New South Wales - Primary commodity: Copper - Secondary commodities: Gold - Document categories: Drill results - Extracted: 2026-09-16 02:34:39 UTC Narrative sentiment: 0.80 · Bullish ## Minestarters Atlas summary Great Plains Metals has confirmed a 'pencil porphyry' discovery at the Goodrich Project in NSW, highlighted by a 128-meter intercept in hole GGDD004 containing 0.34% Cu and 0.17 g/t Au. The intercept includes a high-grade 3.55m zone at 2.80% Cu and is located at a shallow depth of 81.45m. Reasoning: The discovery of a 128m continuous porphyry-style intercept with high-grade sub-intervals at shallow depth is a major exploration milestone for the Goodrich project. - Positive factor: Significant 128m porphyry-style intercept - Positive factor: High-grade 2.80% Cu sub-interval - Positive factor: Near-surface mineralization starting at 81m - Positive factor: Discovery of UST cupola textures - Negative factor: Other holes in program \(GGDD005, MRDD001\) were barren Facts used in scoring: 10 ## Classification and evidence No classification tags are available. ## Extracted facts Stored fact records: 10. Some facts used in scoring do not have a stored record. ## Drill Results (10) ### GGDD004 [Link to this fact](https://atlas-extractions.minestarters.com/news/great-plains-metals-confirms-pencil-porphyry-discovery-with-a-128-meter-intercep--117c19ea-8c40-4344-8094-9c0b07b2c6ec#fact-drill-facts-0) Goodrich · copper #### Identity - Hole ID: GGDD004 - Project: Goodrich - Commodity: copper - Region: australia\_nsw - Reported Region: australia\_nsw - Ticker: GPS #### Geometry - Grade: 0.34 - Grade Unit: % - Intercept: 128 m - From: 81.45 m - To: 209.45 m - Intercept Depth: 81.45 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: GGDD004:81.45-209.45 - Mining Method: open\_pit #### Location - Location: Monzonite Porphyry Stock - Loc. Source: document #### QA/QC - QP Signed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-07-28T00:00:00.000Z Reasoning: Significant continuous porphyry-style copper intercept. - Positive factor: Broad 128m intercept - Positive factor: Porphyry-style mineralization Evidence · text > intersected 128 meters of mineralization with 0.34% copper #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### GGDD004 [Link to this fact](https://atlas-extractions.minestarters.com/news/great-plains-metals-confirms-pencil-porphyry-discovery-with-a-128-meter-intercep--117c19ea-8c40-4344-8094-9c0b07b2c6ec#fact-drill-facts-1) Goodrich · gold #### Identity - Hole ID: GGDD004 - Project: Goodrich - Commodity: gold - Region: australia\_nsw - Reported Region: australia\_nsw - Ticker: GPS #### Geometry - Grade: 0.17 - Grade Unit: g/t - Intercept: 128 m - From: 81.45 m - To: 209.45 m - Intercept Depth: 81.45 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: GGDD004:81.45-209.45 - Mining Method: open\_pit #### Location - Location: Monzonite Porphyry Stock - Loc. Source: document #### QA/QC - QP Signed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-07-28T00:00:00.000Z Reasoning: Gold mineralization accompanies the primary copper discovery. - Positive factor: Co-occurrence with significant copper Evidence · text > 0.17 g/t gold from 81.45m downhole #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### GGDD004 [Link to this fact](https://atlas-extractions.minestarters.com/news/great-plains-metals-confirms-pencil-porphyry-discovery-with-a-128-meter-intercep--117c19ea-8c40-4344-8094-9c0b07b2c6ec#fact-drill-facts-2) Goodrich · copper #### Identity - Hole ID: GGDD004 - Project: Goodrich - Commodity: copper - Region: australia\_nsw - Reported Region: australia\_nsw - Ticker: GPS #### Geometry - Grade: 2.8 - Grade Unit: % - Intercept: 3.55 m - From: 81.45 m - To: 84.99 m - Intercept Depth: 81.45 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: GGDD004:81.45-84.99 - Mining Method: open\_pit #### Location - Location: UST Contact Zone - Loc. Source: document #### QA/QC - QP Signed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-07-28T00:00:00.000Z Reasoning: Strong high-grade zone within the discovery intercept. - Positive factor: High-grade 2.80% Cu intercept - Positive factor: Located at porphyry contact Evidence · text > 3.55 meters @ 2.80% Cu #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### GGDD004 [Link to this fact](https://atlas-extractions.minestarters.com/news/great-plains-metals-confirms-pencil-porphyry-discovery-with-a-128-meter-intercep--117c19ea-8c40-4344-8094-9c0b07b2c6ec#fact-drill-facts-3) Goodrich · gold #### Identity - Hole ID: GGDD004 - Project: Goodrich - Commodity: gold - Region: australia\_nsw - Reported Region: australia\_nsw - Ticker: GPS #### Geometry - Grade: 0.18 - Grade Unit: g/t - Intercept: 3.55 m - From: 81.45 m - To: 84.99 m - Intercept Depth: 81.45 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: GGDD004:81.45-84.99 - Mining Method: open\_pit #### Location - Location: UST Contact Zone - Loc. Source: document #### QA/QC - QP Signed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-07-28T00:00:00.000Z Reasoning: Gold grade is low but accompanies high-grade copper. Evidence · text > 0.18 g/t Au from 81.45m #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### GGDD004 [Link to this fact](https://atlas-extractions.minestarters.com/news/great-plains-metals-confirms-pencil-porphyry-discovery-with-a-128-meter-intercep--117c19ea-8c40-4344-8094-9c0b07b2c6ec#fact-drill-facts-4) Goodrich · copper #### Identity - Hole ID: GGDD004 - Project: Goodrich - Commodity: copper - Region: australia\_nsw - Reported Region: australia\_nsw - Ticker: GPS #### Geometry - Grade: 0.52 - Grade Unit: % - Intercept: 26 m - From: 102 m - To: 128 m - Intercept Depth: 102 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: GGDD004:102-128 - Mining Method: open\_pit #### Location - Location: Disseminated chalcopyrite - Loc. Source: document #### QA/QC - QP Signed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-07-28T00:00:00.000Z Reasoning: Solid width and grade confirming continuity. - Positive factor: Significant width of 26m Evidence · text > 26 meters @ 0.52% Cu #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### GGDD004 [Link to this fact](https://atlas-extractions.minestarters.com/news/great-plains-metals-confirms-pencil-porphyry-discovery-with-a-128-meter-intercep--117c19ea-8c40-4344-8094-9c0b07b2c6ec#fact-drill-facts-5) Goodrich · gold #### Identity - Hole ID: GGDD004 - Project: Goodrich - Commodity: gold - Region: australia\_nsw - Reported Region: australia\_nsw - Ticker: GPS #### Geometry - Grade: 0.24 - Grade Unit: g/t - Intercept: 26 m - From: 102 m - To: 128 m - Intercept Depth: 102 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: GGDD004:102-128 - Mining Method: open\_pit #### Location - Location: Disseminated chalcopyrite - Loc. Source: document #### QA/QC - QP Signed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-07-28T00:00:00.000Z Reasoning: Gold grade is consistent with the broader intercept. Evidence · text > 0.24 g/t Au from 102m #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### GGDD004 [Link to this fact](https://atlas-extractions.minestarters.com/news/great-plains-metals-confirms-pencil-porphyry-discovery-with-a-128-meter-intercep--117c19ea-8c40-4344-8094-9c0b07b2c6ec#fact-drill-facts-6) Goodrich · copper #### Identity - Hole ID: GGDD004 - Project: Goodrich - Commodity: copper - Region: australia\_nsw - Reported Region: australia\_nsw - Ticker: GPS #### Geometry - Grade: 0.66 - Grade Unit: % - Intercept: 5 m - From: 158 m - To: 163 m - Intercept Depth: 158 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: GGDD004:158-163 - Mining Method: open\_pit #### Location - Location: Disseminated chalcopyrite - Loc. Source: document #### QA/QC - QP Signed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-07-28T00:00:00.000Z Reasoning: High-grade sub-interval within the main intercept. - Positive factor: Good grade for a sub-interval Evidence · text > 5 meters @ 0.66% Cu #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### GGDD004 [Link to this fact](https://atlas-extractions.minestarters.com/news/great-plains-metals-confirms-pencil-porphyry-discovery-with-a-128-meter-intercep--117c19ea-8c40-4344-8094-9c0b07b2c6ec#fact-drill-facts-7) Goodrich · gold #### Identity - Hole ID: GGDD004 - Project: Goodrich - Commodity: gold - Region: australia\_nsw - Reported Region: australia\_nsw - Ticker: GPS #### Geometry - Grade: 0.49 - Grade Unit: g/t - Intercept: 5 m - From: 158 m - To: 163 m - Intercept Depth: 158 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: GGDD004:158-163 - Mining Method: open\_pit #### Location - Location: Disseminated chalcopyrite - Loc. Source: document #### QA/QC - QP Signed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-07-28T00:00:00.000Z Reasoning: Gold grade is relatively high for this intercept. Evidence · text > 0.49 g/t Au from 158m #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### GGDD003 [Link to this fact](https://atlas-extractions.minestarters.com/news/great-plains-metals-confirms-pencil-porphyry-discovery-with-a-128-meter-intercep--117c19ea-8c40-4344-8094-9c0b07b2c6ec#fact-drill-facts-8) Goodrich · copper #### Identity - Hole ID: GGDD003 - Project: Goodrich - Commodity: copper - Region: australia\_nsw - Reported Region: australia\_nsw - Ticker: GPS #### Geometry - Grade: 0.17 - Grade Unit: % - Intercept: 52.97 m - From: 29.15 m - To: 82.12 m - Intercept Depth: 29.15 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: GGDD003:29.15-82.12 - Mining Method: open\_pit #### Location - Location: Disseminated chalcopyrite - Loc. Source: document #### QA/QC - QP Signed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-07-28T00:00:00.000Z Reasoning: Wide but low-grade intercept representing the porphyry halo. - Positive factor: Wide 53m intercept - Negative factor: Low grade Evidence · text > 52.97m 0.17% Cu #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: 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 Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### GGDD003 [Link to this fact](https://atlas-extractions.minestarters.com/news/great-plains-metals-confirms-pencil-porphyry-discovery-with-a-128-meter-intercep--117c19ea-8c40-4344-8094-9c0b07b2c6ec#fact-drill-facts-9) Goodrich · gold #### Identity - Hole ID: GGDD003 - Project: Goodrich - Commodity: gold - Region: australia\_nsw - Reported Region: australia\_nsw - Ticker: GPS #### Geometry - Grade: 0.02 - Grade Unit: g/t - Intercept: 52.97 m - From: 29.15 m - To: 82.12 m - Intercept Depth: 29.15 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: GGDD003:29.15-82.12 - Mining Method: open\_pit #### Location - Location: Disseminated chalcopyrite - Loc. Source: document #### QA/QC - QP Signed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-07-28T00:00:00.000Z Reasoning: Gold grade is marginal in this wide intercept. - Negative factor: Very low gold grade Evidence · text > 52.97m 0.02 g/t #### Tags used in scoring **No QA/QC Disclosure** Polarity: negative Definition: 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 Undisclosed** Polarity: negative Definition: 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.