# ORP: Up to 4.1% U3O8 Rock Chip Samples at McArthur Project NT Canonical Atlas analysis: https://atlas-staging.minestarters.com/news/orp-up-to-4-1-u3o8-rock-chip-samples-at-mcarthur-project-nt--f7104402-ee9d-48da-9bc3-5410d46037a8 Original source: https://www.asx.com.au/asx/v2/statistics/displayAnnouncement.do?display=pdf&idsId=03155081 Publisher: asx Original announcement: 2026-10-20T22:51:00.000Z Analysis by Minestarters Atlas Atlas analysis published: 2026-10-20T23:04:38.807Z Atlas analysis updated: 2026-10-20T23:04:38.807Z - Company: Orpheus Uranium Limited - Ticker: ORP - Exchange: ASX - Region: Northern Territory - Primary commodity: Uranium - Secondary commodities: Copper - Document categories: Drill results, Other - Extracted: 2026-10-20 23:04:39 UTC Narrative sentiment: 0.80 · Bullish ## Minestarters Atlas summary Orpheus Uranium Limited announced high-grade uranium rock chip samples, up to 4.1% U3O8, from its inaugural reconnaissance program at the Conways tenement within the McArthur Project, Northern Territory. These early results, which also included elevated copper grades, represent a new discovery in an underexplored area and are spatially associated with distinct geophysical anomalies. The company is continuing fieldwork and awaiting additional geochemical analysis results to further define the system. Reasoning: Initial rock chip samples returned exceptional uranium grades up to 4.1% U3O8 and elevated copper, representing a new discovery in an underexplored area with supporting geophysical anomalies, though results are from selective surface samples at an early exploration stage. - Positive factor: bonanza\_grade\_uranium - Positive factor: new\_discovery - Positive factor: elevated\_copper\_grades - Positive factor: geophysical\_association - Positive factor: portfolio\_diversity - Negative factor: early\_stage\_reconnaissance - Negative factor: selective\_samples - Negative factor: no\_field\_qaqc - Negative factor: no\_continuity\_established Low confidence — this extraction should be reviewed alongside the original source. Facts used in scoring: 10 ## Classification and evidence **Bonanza Intercept** Polarity: positive Definition: Exceptionally high-grade zone, well above the deposit-type norm. Why it applies: Rock chip sample CON005 returned 4.1% U3O8, exceeding the 2% U3O8 exceptional threshold for uranium. Evidence · table > 4.1% U3O8 Context: 35,598 **Bonanza Intercept** Polarity: positive Definition: Exceptionally high-grade zone, well above the deposit-type norm. Why it applies: Rock chip sample CON003 returned 3.8% U3O8, exceeding the 2% U3O8 exceptional threshold for uranium. Evidence · table > 3.8% U3O8 Context: 32,981 **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 includes a Competent Person Statement by Mr Geoffrey Eupene, a Fellow of the Australasian Institute of Mining and Metallurgy, who compiled or reviewed the exploration results. Evidence · text > Sections of information contained in this report that relate to Exploration Results were compiled or reviewed by Mr Geoffrey Eupene, BSc \(Hons\), who is a Fellow of the Australasian Institute of Mining and Metallurgy **Apparent Width Only** Polarity: negative Definition: Interval given as downhole width with no true width or drill orientation — apparent width may overstate true thickness. Why it applies: The samples are selective point specimens and are not considered representative of the broader mineralisation, with the orientation and continuity of mineralised structures not yet established. Evidence · text > Samples are selective point specimens and are not considered representative of the broader mineralisation or average uranium grades within the tenement. **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: No field standards, blanks, or duplicates were submitted with the samples, relying solely on the laboratory's internal QA/QC procedures. Evidence · text > No field standards, blanks or duplicates were submitted. Analytical quality control relied on Intertek Minerals' internal laboratory QA/QC procedures. ## Extracted facts Stored fact records: 10. Some facts used in scoring do not have a stored record. ## Drill Results (10) ### CON002 [Link to this fact](https://atlas-staging.minestarters.com/news/orp-up-to-4-1-u3o8-rock-chip-samples-at-mcarthur-project-nt--f7104402-ee9d-48da-9bc3-5410d46037a8#fact-drill-facts-0) McArthur Project · uranium #### Identity - Hole ID: CON002 - Project: McArthur Project - Commodity: uranium - Region: australia\_nt - Reported Region: Northern Territory - Ticker: ORP #### Geometry - Grade: 0.8 - Grade Unit: % U3O8 #### Classification - Program: exploration - Sample Type: surface - Group ID: CON002 - Mining Method: unknown #### Location - Easting: 333119 - Northing: 8436596 - CRS: GDA94 UTM Zone 53 - EPSG: 28353 - Loc. Confidence: high - Loc. Source: document #### QA/QC - Laboratory: Intertek - QA/QC Disclosed: Yes - QP Signed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: Rock chip sample CON002 returned 0.8% U3O8, which is a strong grade for uranium, indicating a new discovery. - Positive factor: strong\_grade\_uranium - Positive factor: new\_discovery - Negative factor: selective\_sample - Negative factor: no\_field\_qaqc - Negative factor: no\_continuity\_established Evidence · table > 0.8 Context: 7,120 #### Tags used in scoring **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: qaqc\_disclosed is 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 ### CON002 [Link to this fact](https://atlas-staging.minestarters.com/news/orp-up-to-4-1-u3o8-rock-chip-samples-at-mcarthur-project-nt--f7104402-ee9d-48da-9bc3-5410d46037a8#fact-drill-facts-1) McArthur Project · copper #### Identity - Hole ID: CON002 - Project: McArthur Project - Commodity: copper - Region: australia\_nt - Reported Region: Northern Territory - Ticker: ORP #### Geometry - Grade: 0.091 - Grade Unit: % #### Classification - Program: exploration - Sample Type: surface - Group ID: CON002 - Mining Method: unknown #### Location - Easting: 333119 - Northing: 8436596 - CRS: GDA94 UTM Zone 53 - EPSG: 28353 - Loc. Confidence: high - Loc. Source: document #### QA/QC - Laboratory: Intertek - QA/QC Disclosed: Yes - QP Signed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: Rock chip sample CON002 returned 0.091% copper, which is an elevated grade for a byproduct, supporting the polymetallic nature of the discovery. - Positive factor: elevated\_copper - Negative factor: selective\_sample - Negative factor: no\_field\_qaqc - Negative factor: no\_continuity\_established Evidence · table > 910 Context: 7,120 #### Tags used in scoring **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: qaqc\_disclosed is 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 ### CON003 [Link to this fact](https://atlas-staging.minestarters.com/news/orp-up-to-4-1-u3o8-rock-chip-samples-at-mcarthur-project-nt--f7104402-ee9d-48da-9bc3-5410d46037a8#fact-drill-facts-2) McArthur Project · uranium #### Identity - Hole ID: CON003 - Project: McArthur Project - Commodity: uranium - Region: australia\_nt - Reported Region: Northern Territory - Ticker: ORP #### Geometry - Grade: 3.8 - Grade Unit: % U3O8 #### Classification - Program: exploration - Sample Type: surface - Group ID: CON003 - Mining Method: unknown #### Location - Easting: 333108 - Northing: 8436625 - CRS: GDA94 UTM Zone 53 - EPSG: 28353 - Loc. Confidence: high - Loc. Source: document #### QA/QC - Laboratory: Intertek - QA/QC Disclosed: Yes - QP Signed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: Rock chip sample CON003 returned 3.8% U3O8, which is an exceptional grade for uranium, highlighting significant potential. - Positive factor: exceptional\_grade\_uranium - Positive factor: new\_discovery - Negative factor: selective\_sample - Negative factor: no\_field\_qaqc - Negative factor: no\_continuity\_established Evidence · table > 3.8 Context: 32,981 #### Tags used in scoring **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: qaqc\_disclosed is 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 ### CON003 [Link to this fact](https://atlas-staging.minestarters.com/news/orp-up-to-4-1-u3o8-rock-chip-samples-at-mcarthur-project-nt--f7104402-ee9d-48da-9bc3-5410d46037a8#fact-drill-facts-3) McArthur Project · copper #### Identity - Hole ID: CON003 - Project: McArthur Project - Commodity: copper - Region: australia\_nt - Reported Region: Northern Territory - Ticker: ORP #### Geometry - Grade: 0.8577 - Grade Unit: % #### Classification - Program: exploration - Sample Type: surface - Group ID: CON003 - Mining Method: unknown #### Location - Easting: 333108 - Northing: 8436625 - CRS: GDA94 UTM Zone 53 - EPSG: 28353 - Loc. Confidence: high - Loc. Source: document #### QA/QC - Laboratory: Intertek - QA/QC Disclosed: Yes - QP Signed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: Rock chip sample CON003 returned 0.8577% copper, which is a strong grade for a byproduct, further enhancing the discovery. - Positive factor: strong\_grade\_copper - Negative factor: selective\_sample - Negative factor: no\_field\_qaqc - Negative factor: no\_continuity\_established Evidence · table > 8,577 Context: 32,981 #### Tags used in scoring **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: qaqc\_disclosed is 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 ### CON004 [Link to this fact](https://atlas-staging.minestarters.com/news/orp-up-to-4-1-u3o8-rock-chip-samples-at-mcarthur-project-nt--f7104402-ee9d-48da-9bc3-5410d46037a8#fact-drill-facts-4) McArthur Project · uranium #### Identity - Hole ID: CON004 - Project: McArthur Project - Commodity: uranium - Region: australia\_nt - Reported Region: Northern Territory - Ticker: ORP #### Geometry - Grade: 1.6 - Grade Unit: % U3O8 #### Classification - Program: exploration - Sample Type: surface - Group ID: CON004 - Mining Method: unknown #### Location - Easting: 333116 - Northing: 8436620 - CRS: GDA94 UTM Zone 53 - EPSG: 28353 - Loc. Confidence: high - Loc. Source: document #### QA/QC - Laboratory: Intertek - QA/QC Disclosed: Yes - QP Signed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: Rock chip sample CON004 returned 1.6% U3O8, which is a strong grade for uranium, supporting the prospectivity of the area. - Positive factor: strong\_grade\_uranium - Positive factor: new\_discovery - Negative factor: selective\_sample - Negative factor: no\_field\_qaqc - Negative factor: no\_continuity\_established Evidence · table > 1.6 Context: 13,704 #### Tags used in scoring **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: qaqc\_disclosed is 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 ### CON004 [Link to this fact](https://atlas-staging.minestarters.com/news/orp-up-to-4-1-u3o8-rock-chip-samples-at-mcarthur-project-nt--f7104402-ee9d-48da-9bc3-5410d46037a8#fact-drill-facts-5) McArthur Project · copper #### Identity - Hole ID: CON004 - Project: McArthur Project - Commodity: copper - Region: australia\_nt - Reported Region: Northern Territory - Ticker: ORP #### Geometry - Grade: 0.2502 - Grade Unit: % #### Classification - Program: exploration - Sample Type: surface - Group ID: CON004 - Mining Method: unknown #### Location - Easting: 333116 - Northing: 8436620 - CRS: GDA94 UTM Zone 53 - EPSG: 28353 - Loc. Confidence: high - Loc. Source: document #### QA/QC - Laboratory: Intertek - QA/QC Disclosed: Yes - QP Signed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: Rock chip sample CON004 returned 0.2502% copper, which is an elevated grade for a byproduct. - Positive factor: elevated\_copper - Negative factor: selective\_sample - Negative factor: no\_field\_qaqc - Negative factor: no\_continuity\_established Evidence · table > 2,502 Context: 13,704 #### Tags used in scoring **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: qaqc\_disclosed is 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 ### CON004a [Link to this fact](https://atlas-staging.minestarters.com/news/orp-up-to-4-1-u3o8-rock-chip-samples-at-mcarthur-project-nt--f7104402-ee9d-48da-9bc3-5410d46037a8#fact-drill-facts-6) McArthur Project · uranium #### Identity - Hole ID: CON004a - Project: McArthur Project - Commodity: uranium - Region: australia\_nt - Reported Region: Northern Territory - Ticker: ORP #### Geometry - Grade: 0.01 - Grade Unit: % U3O8 #### Classification - Program: exploration - Sample Type: surface - Group ID: CON004a - Mining Method: unknown #### Location - Easting: 333116 - Northing: 8436620 - CRS: GDA94 UTM Zone 53 - EPSG: 28353 - Loc. Confidence: high - Loc. Source: document #### QA/QC - Laboratory: Intertek - QA/QC Disclosed: Yes - QP Signed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: Soil sample CON004a returned 0.01% U3O8, which is a low grade but provides geochemical characterization. - Negative factor: low\_grade - Negative factor: soil\_sample - Negative factor: selective\_sample - Negative factor: no\_field\_qaqc - Negative factor: no\_continuity\_established Evidence · table > 0.01 Context: 118 #### Tags used in scoring **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: qaqc\_disclosed is 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 ### CON004a [Link to this fact](https://atlas-staging.minestarters.com/news/orp-up-to-4-1-u3o8-rock-chip-samples-at-mcarthur-project-nt--f7104402-ee9d-48da-9bc3-5410d46037a8#fact-drill-facts-7) McArthur Project · copper #### Identity - Hole ID: CON004a - Project: McArthur Project - Commodity: copper - Region: australia\_nt - Reported Region: Northern Territory - Ticker: ORP #### Geometry - Grade: 0.0256 - Grade Unit: % #### Classification - Program: exploration - Sample Type: surface - Group ID: CON004a - Mining Method: unknown #### Location - Easting: 333116 - Northing: 8436620 - CRS: GDA94 UTM Zone 53 - EPSG: 28353 - Loc. Confidence: high - Loc. Source: document #### QA/QC - Laboratory: Intertek - QA/QC Disclosed: Yes - QP Signed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: Soil sample CON004a returned 0.0256% copper, which is a low grade but provides geochemical characterization. - Negative factor: low\_grade - Negative factor: soil\_sample - Negative factor: selective\_sample - Negative factor: no\_field\_qaqc - Negative factor: no\_continuity\_established Evidence · table > 256 Context: 118 #### Tags used in scoring **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: qaqc\_disclosed is 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 ### CON005 [Link to this fact](https://atlas-staging.minestarters.com/news/orp-up-to-4-1-u3o8-rock-chip-samples-at-mcarthur-project-nt--f7104402-ee9d-48da-9bc3-5410d46037a8#fact-drill-facts-8) McArthur Project · uranium #### Identity - Hole ID: CON005 - Project: McArthur Project - Commodity: uranium - Region: australia\_nt - Reported Region: Northern Territory - Ticker: ORP #### Geometry - Grade: 4.1 - Grade Unit: % U3O8 #### Classification - Program: exploration - Sample Type: surface - Group ID: CON005 - Mining Method: unknown #### Location - Easting: 333122 - Northing: 8436614 - CRS: GDA94 UTM Zone 53 - EPSG: 28353 - Loc. Confidence: high - Loc. Source: document #### QA/QC - Laboratory: Intertek - QA/QC Disclosed: Yes - QP Signed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: Rock chip sample CON005 returned 4.1% U3O8, which is an exceptional, bonanza-grade for uranium, representing the highest grade in the program. - Positive factor: bonanza\_grade\_uranium - Positive factor: new\_discovery - Negative factor: selective\_sample - Negative factor: no\_field\_qaqc - Negative factor: no\_continuity\_established Evidence · table > 4.1 Context: 35,598 #### Tags used in scoring **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: qaqc\_disclosed is 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 ### CON005 [Link to this fact](https://atlas-staging.minestarters.com/news/orp-up-to-4-1-u3o8-rock-chip-samples-at-mcarthur-project-nt--f7104402-ee9d-48da-9bc3-5410d46037a8#fact-drill-facts-9) McArthur Project · copper #### Identity - Hole ID: CON005 - Project: McArthur Project - Commodity: copper - Region: australia\_nt - Reported Region: Northern Territory - Ticker: ORP #### Geometry - Grade: 0.5515 - Grade Unit: % #### Classification - Program: exploration - Sample Type: surface - Group ID: CON005 - Mining Method: unknown #### Location - Easting: 333122 - Northing: 8436614 - CRS: GDA94 UTM Zone 53 - EPSG: 28353 - Loc. Confidence: high - Loc. Source: document #### QA/QC - Laboratory: Intertek - QA/QC Disclosed: Yes - QP Signed: Yes #### Review - Needs Review: No - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-10-20T00:00:00.000Z Reasoning: Rock chip sample CON005 returned 0.5515% copper, which is a strong grade for a byproduct, further enhancing the discovery. - Positive factor: strong\_grade\_copper - Negative factor: selective\_sample - Negative factor: no\_field\_qaqc - Negative factor: no\_continuity\_established Evidence · table > 5,515 Context: 35,598 #### Tags used in scoring **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: qaqc\_disclosed is 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.