# First-Ever Drill Hole at Excalibur Intersects Long Intervals of Alteration and Sulphide Mineralization Consistent with A New Porphyry System Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/first-ever-drill-hole-at-excalibur-intersects-long-intervals-of-alteration-and-s--1e953b18-904f-41a6-b0a3-831491e46eed Original source: https://orestocks.com/company/PRR.CN/press-releases/4973542875840962 Publisher: orestocks Original announcement: 2026-09-10T11:00:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Prospect Ridge Resources Corp. - Ticker: PRR.CN - Exchange: Unavailable - Region: British Columbia - Primary commodity: Copper - Secondary commodities: Gold, Molybdenum - Document categories: Drill results - Extracted: 2026-09-10 11:48:27 UTC Narrative sentiment: 0.60 · Bullish ## Minestarters Atlas summary Prospect Ridge Resources has completed the first phase of drilling at its Excalibur copper-gold porphyry project in British Columbia. The two holes drilled \(EXC26-001 and EXC26-002\) intersected significant hydrothermal alteration and sulphide mineralization consistent with a porphyry system, though assay results are still pending. Reasoning: First-ever drill holes at a greenfield target show encouraging visual evidence of a porphyry system, but lack quantitative assay data to confirm grade or economic viability. - Positive factor: discovery-style alteration observed - Positive factor: sulphide mineralization present - Positive factor: consistent with porphyry model - Negative factor: no assay results yet - Negative factor: visual observations only - Negative factor: mineralization is patchy/variable Low confidence — this extraction should be reviewed alongside the original source. Facts used in scoring: 2 ## Classification and evidence **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: The release mentions samples were sent to ALS Minerals for geochemical assay and identifies a Qualified Person \(Ron Voordouw\). Evidence · text > one half sent to ALS Minerals for geochemical assay **Nearology Play** Polarity: neutral Definition: Value premise rests on proximity to a known deposit rather than own results. Why it applies: The project is located within the Babine porphyry belt near the Bell and Granisle mines. Evidence · text > located within British Columbia's Babine porphyry belt, near the past-producing Bell, and Granisle mines **Mill Route** Polarity: neutral Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\). Why it applies: the document describes a mill\_cil route \("CIP"\) ## Extracted facts Stored fact records: 2. Some facts used in scoring do not have a stored record. ## Drill Results (2) ### EXC26-001 [Link to this fact](https://atlas-staging.minestarters.com/news/first-ever-drill-hole-at-excalibur-intersects-long-intervals-of-alteration-and-s--1e953b18-904f-41a6-b0a3-831491e46eed#fact-drill-facts-0) Excalibur · copper #### Identity - Hole ID: EXC26-001 - Project: Excalibur - Commodity: copper - Region: canada\_bc - Reported Region: canada\_bc - Ticker: PRR.CN #### Geometry - Intercept: 515 m - From: 0 m - To: 515 m - Hole Depth: 515 m - Intercept Depth: 0 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: EXC26-001:0-515 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Minerals - QP Signed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-10T00:00:00.000Z Reasoning: Visual observation of 515m of alteration and sulphides is a strong discovery signal for a porphyry target, but lacks grade confirmation. - Positive factor: long interval of alteration - Positive factor: presence of chalcopyrite and molybdenite - Negative factor: visual only - Negative factor: no assay results Evidence · text > Hole EXC26-001 intersected 515 meters of variably intense hydrothermal alteration and pyrite-dominant disseminated sulphide mineralization #### 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 ### EXC26-002 [Link to this fact](https://atlas-staging.minestarters.com/news/first-ever-drill-hole-at-excalibur-intersects-long-intervals-of-alteration-and-s--1e953b18-904f-41a6-b0a3-831491e46eed#fact-drill-facts-1) Excalibur · copper #### Identity - Hole ID: EXC26-002 - Project: Excalibur - Commodity: copper - Region: canada\_bc - Reported Region: canada\_bc - Ticker: PRR.CN #### Geometry - Intercept: 453 m - From: 11 m - To: 464 m - Hole Depth: 464 m - Intercept Depth: 11 m #### Classification - Deposit Type: porphyry - Program: exploration - Sample Type: drill - Group ID: EXC26-002:11-464 - Mining Method: open\_pit #### QA/QC - Laboratory: ALS Minerals - QP Signed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-10T00:00:00.000Z Reasoning: Intercept shows porphyry-style alteration \(silicification and potassic\) but mineralization is described as patchy and trace. - Positive factor: potassic alteration observed - Positive factor: consistent with porphyry style - Negative factor: patchy mineralization - Negative factor: visual only Evidence · text > intersected localized, structurally controlled silicification in the upper 131 meters of the hole, followed by patchy potassic alteration over the lower 333 meters #### 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.