Uncategorized
Aldebaran and Centauri Announce Significant Increase in Mineral Resources for the Rio Grande Gold-Copper Project in Salta, Argentina
Aldebaran Resources Inc. (TSX-V: ALDE, OTCQX: ADBRF) and Centauri Minerals Inc. are pleased to announce the results of an updated mineral resource estimate for the Rio Grande gold-copper project in Salta, Argentina.
Highlights
- Indicated Resources containing 1.45 million ounces of gold, 384,000 tonnes of copper and 12.7 million ounces of silver
- 153.7 million tonnes grading 0.29 g/t gold, 0.25% copper and 2.6 g/t silver
- Inferred Resources containing 1.55 million ounces of gold, 420,000 tonnes of copper and 17.8 million ounces of silver
- 220.8 million tonnes grading 0.22 g/t gold, 0.19% copper and 2.5 g/t silver
- Mineralization is still open in several directions, with significant porphyry potential beneath the current resource, with historical drilling hitting 257.2 m of 1.20 g/t gold, and 0.53% copper in porphyry dykes
Sam Leung, Chief Executive Officer and Director of Centauri, commented: “This new mineral resource estimate is fresh evidence that encourages modern exploration and future studies on the Rio Grande gold-copper project. With no drilling or targeting programs since 2012, Centauri now has the exciting opportunity to apply modern geophysical and geochemical tools ahead of future drilling programs on a project that already contains a substantial mineral inventory. With this resource in hand, a drill program planned for later this year and five additional exploration projects in our portfolio, Centauri is well set up to move forward to becoming a public company in the first half of 2026.”
Dr. Kevin B. Heather, Chief Geological Officer of Aldebaran Resources and Technical Advisor to Centauri, commented: “I have been directly involved in the exploration at the Rio Grande gold-copper project since 2004 and we have always felt the project needed additional exploration to realize its full potential. The MRE reported here marks a significant milestone in the resurrection of the project, and I look forward to working with the Centauri team to unlock significant value in the future.”
Mineral Resource Estimate
SLR Consulting (Canada) Ltd. was retained by Centauri to complete a National Instrument 43-101 Technical Report and Mineral Resource Estimate update for the Rio Grande gold-copper project, located in Salta Province, Argentina. The Rio Grande gold-copper property is located in the Altiplano of northwest Argentina and supported by established infrastructure that services regional mines. The property ranges in elevation between 3,700 m and 4,700 m above sea level and is located approximately 260 km west of the city of Salta, 40 km east of the Chilean border, and 9 km from the operating Lindero gold-copper mine. SLR visited the Rio Grande property from December 5 to 7, 2025.
To generate a new resource pit shell, SLR applied new Whittle input parameters to the 2018 resource block model from the NI 43-101 Technical Report and MRE completed by Roscoe Postle Associates Inc. (since acquired by SLR in 2019) and dated August 17, 2018. There has been no new drilling or trenching work carried out at Rio Grande since 2013.
RPA used Datamine Studio RM and Leapfrog Geo software to build the resource block model. The resource database contains drilling and trenching data to the end of November 2012. The database is comprised of 124 drill holes for a total of 74,201 m of drilling and 84 trenches with a total length of 9,489 m. Both drill holes and trenches were used for resource estimation. Wireframes for geology and mineralization were constructed in Leapfrog Geo based on geology sections, assay results, and lithological information. Assays were capped to various levels based on exploratory data analysis and then composited to four metre lengths.
Wireframes were filled with blocks measuring 10 m by 10 m by 10 m with sub-celling at wireframe boundaries. Blocks were interpolated with grade using Ordinary Kriging. Block estimates were validated using industry-standard validation techniques. Classification of blocks was based on distance criteria. Definitions for resource categories are consistent with CIM (2014) definitions as incorporated into NI 43-101. Blocks were classified as Indicated and Inferred based on the following criteria:
- Indicated Mineral Resources: Blocks located within areas drilled at 100 m spacing and demonstrating reasonable continuity above the cut-off grade; and
- Inferred Mineral Resources: Blocks located within 200 m of the nearest drill hole.
The Rio Grande project is situated next to the operating Lindero Au-Cu mine (Figure 1) and it includes five Mineral Resource areas, ranked by relative contribution: Discovery–Sofía, Central (West and East), North, Southwest, and Seven (Figure 2).
The conceptual processing strategy for Rio Grande includes Heap Leach with SART for oxide material, a combined Heap Leach–SART and flotation approach for transitional material, and flotation for sulphide material. While several viable gold and copper recovery options have been evaluated, the final process flowsheet has not yet been defined and will require additional metallurgical test work. Each process assumes different recoveries for gold, copper, and silver. The updated MRE for Rio Grande is provided in Table 1. A supporting NI 43-101 Technical Report will be filed on SEDAR at www.sedarplus.com within 45 days.
Table 1: Rio Grande Open Pit Mineral Resource Estimate – February 15, 2026
| Category | Oxidation | Tonnes (Mt) |
Au (g/t) |
Cu (%) |
Ag (g/t) |
Au (koz) |
Cu (kt) |
Ag (Moz) |
| Indicated | Oxide | 94.1 | 0.26 | 0.20 | 2.1 | 781 | 188 | 6.3 |
| Transitional | 47.3 | 0.34 | 0.33 | 3.6 | 523 | 156 | 5.5 | |
| Sulphide | 12.3 | 0.36 | 0.29 | 2.3 | 144 | 36 | 0.9 | |
| Indicated | 153.7 | 0.29 | 0.25 | 2.6 | 1,448 | 384 | 12.7 | |
| Inferred | Oxide | 144.5 | 0.19 | 0.16 | 2.2 | 898 | 231 | 10.3 |
| Transitional | 75.6 | 0.26 | 0.24 | 3.0 | 643 | 181 | 7.4 | |
| Sulphide | 0.7 | 0.25 | 0.24 | 4.1 | 6 | 2 | 0.1 | |
| Inferred | 220.8 | 0.22 | 0.19 | 2.5 | 1,547 | 420 | 17.8 | |
| Notes:
1) CIM (2014) definitions were followed for Mineral Resources. |
||||||||
Exploration Potential
Mineralization at Rio Grande remains open at depth in all of the known zones, particularly in the Sofia and Southwest zones. Drilling completed to date has primarily tested the upper portions of the mineralized system, however many of the existing drill holes terminated in sulphide mineralization. In addition, geological interpretation indicates potential for deeper sulphide extensions of the known zones, with historic drilling intercepting mineralization in porphyry dykes whose source has yet to be discovered. This potential is conceptual in nature, and insufficient drilling has been completed to define additional Mineral Resources; however, the observed continuity of alteration and structural controls supports continued exploration.
Centauri Next Steps
Centauri is currently working on the legal and commercial requirements to complete the previously announced spinout and go-public event, expected to be completed in the first half of 2026. In addition, Centauri is building out a management and exploration team to advance the exploration portfolio, including developing new drill targets for the Rio Grande project with the intention to commence a drill program on the project in 2026.
Value to Aldebaran Shareholders
Aldebaran and Centauri have executed a definitive share transfer agreement pursuant to which Centauri will acquire all of the shares of Aldebaran Argentina S.A. and Minera El Toro S.A., the Aldebaran subsidiaries that hold the Rio Grande, Aguas Calientes, and four other early-stage mineral exploration properties in Argentina. In exchange, Aldebaran will receive 40,000,000 common shares (representing approximately 78% of the currently outstanding Centauri shares, with the balance owned by investors in the recent placement by Centauri. The share transfer is subject to certain conditions, and closing is expected to occur in the first quarter of 2026 (see Company news release dated October 24, 2025). Aldebaran intends to distribute shares of Centauri to Aldebaran shareholders upon a go-public event for Centauri. Aldebaran may elect to distribute the Centauri shares all at once or in stages and may retain a minority interest in Centauri. The formation of Centauri allows Aldebaran shareholders to maintain their exposure to the Altar copper-gold project in San Juan, Argentina, while also receiving additional value from the other properties currently owned by Aldebaran through the shares in Centauri that they will ultimately receive.
For further information or to subscribe to the Centauri news list, please contact:
Sam Leung
CEO and Director
Centauri Minerals Inc.
Phone: +1 416 206 4187
Email: sam.leung@centauriminerals.com
Ben Cherrington
Manager, Investor Relations
Aldebaran Resources Inc.
Phone: +1 347 394-2728 or +44 7538 244 208
Email: ben.cherrington@aldebaranresources.com
About Aldebaran Resources Inc.
Aldebaran is a mineral exploration company that was spun out of Regulus Resources Inc. in 2018 and has the same core management team. Aldebaran holds an 80% interest in the Altar copper-gold project in San Juan Province, Argentina. The Altar project hosts multiple porphyry copper-gold deposits with potential for additional discoveries. Altar forms part of a cluster of world-class porphyry copper deposits which includes Los Pelambres (Antofagasta Minerals), El Pachón (Glencore), and Los Azules (McEwen Copper). In November 2024, the Company announced an updated mineral resource estimate for Altar, prepared by Independent Mining Consultants Inc. (“IMC”) and based on the drilling completed up to and including the 2023-24 field season (independent technical report prepared by IMC, Tucson, Arizona, titled “Technical Report, Estimated Mineral Resources, Altar Project, San Juan Province, Argentina”, dated December 31, 2024 – see news release dated November 25, 2024). In October 2025, the Company announced a Preliminary Economic Assessment for Altar, prepared by SRK Consulting Inc. (“SRK”) (independent technical report prepared by SRK, titled “NI 43-101 Technical Report Preliminary Economic Assessment, Altar Project, San Juan, Argentina”, dated September 30, 2025 – see news release dated October 30, 2025).
About Centauri Minerals Inc.
Centauri Minerals Inc. is a new mineral exploration company focused on Northern Argentina, a mining region of increasing global significance. Centauri holds 100%-interest in a portfolio of exploration projects spanning over 43,000 hectares in the provinces of Salta, Catamarca and Jujuy, which was spun-out from Aldebaran Resources Inc. The most advanced is the Rio Grande gold-copper project located in Salta, which has an independent NI 43-101 compliant mineral resource estimate that highlights significant gold and copper quantities. Centauri has offices and facilities in Salta, Argentina and Vancouver, Canada. It is currently a private company majority owned by Aldebaran Resources Inc. with plans to become a public company in 2026.
Figure 1: Rio Grande Project Location Map – approximately 9 km northwest of the operating Lindero gold copper mine (Fortuna Mining Corp.)
Figure 2: Rio Grande Mineral Resource Areas and Resource Pit Shell
Figure 3: Rio Grande Mineral Resource Block Model and Resource Pit Shell
Posted March 2, 2026
MORE or "UNCATEGORIZED"
Critical Metals Corp Achieves Breakthrough Tanbreez Heavy Rare Earth Results: >99% Dissolution of Eudialyte Concentrate Into 19 Ultra-High-Purity Rare Earth Products; Refinery Study Projects US$1.8–2.2b in Annual Refinery Revenue
Critical Metals Corp. (Nasdaq: CRML) a leading critical minerals ... READ MORE
September 16, 2026
Metalsource Mining Extends High Grade Mineralization at Depth as Silver Hill Exploration Enters Major Expansion Phase
Holes SH26-22 and SH26-23 return up to 930 g/t AgEq within broade... READ MORE
September 16, 2026
Pasinex Completes Sale of High-Grade Zinc Sulphide Material and Provides Pinargozu Operations Update
Pasinex Resources Limited (CSE: PSE) (FSE: PNX) a growing zinc-fo... READ MORE
September 16, 2026
Aya Gold & Silver Reports High-Grade Silver Exploration Results Near Pit and at Depth at Zgounder
Aya Gold & Silver Inc. (TSX: AYA; NASDAQ: AYA) is pleased to... READ MORE
September 16, 2026
New Break Resources Ltd. (CSE: NBRK) (OTCQB: NBRKF) (FSE: O91) has received results from the last four holes of a ten-hole, 1,996 metre summer drilling program in the Zavitz gold zone at the Company's 100% owned Moray gold project. In total, New Break has completed 5,372 metres of drilling in 32 drillholes in 2026. Moray is located 49 km southeast of Timmins, Ontario and 32 km northwest of the Young-Davidson gold mine operated by Alamos Gold Inc. Select results from the final four of ten holes drilled in the summer drilling program are presented below in Table 1, while drillhole collar locations are detailed in Table 2 in Appendix A. Table 1 – Moray Summer 2026 Final Drill Results Hole ID Length (m) From (m) To (m) Width (1) (m) Au Grade (2) (g/t) NBR-26-29 322.0 77.3 78.8 1.5 0.42 and 138.0 139.1 1.1 0.38 and 162.5 173.3 10.8 (3) 1.61 and 227.4 229.0 1.6 1.21 and 231.5 232.1 0.6 1.72 NBR-26-30 250.0 37.0 38.0 1.0 0.30 and 102.8 103.5 0.7 0.60 and 121.5 122.5 1.0 0.36 and 124.5 125.5 1.0 0.33 and 128.5 129.0 0.5 0.90 and 131.0 132.0 1.0 0.36 and 169.8 174.0 4.2 2.65 and 178.0 179.5 1.5 0.77 and 183.5 186.6 3.1 1.22 and 190.0 190.5 0.5 1.06 and 191.5 192.5 1.0 1.48 and 196.0 200.5 4.5 2.53 and 203.5 204.0 0.5 2.15 and 206.5 212.0 5.5 1.57 NBR-26-31 274.0 169.0 170.5 1.5 0.37 and 184.5 186.0 1.5 0.51 and 197.0 200.0 3.0 0.94 and 201.5 202.0 0.5 0.50 and 203.5 210.0 6.5 (3) 3.12 NBR-26-32 352.0 73.5 74.0 0.5 0.44 and 174.0 174.6 0.6 0.52 and 194.0 195.0 1.0 0.66 and 199.8 203.3 3.5 2.29 and 227.3 228.0 0.7 0.97 (1) Intervals are drill intersections and do not necessarily represent true widths. (2) All intervals are presented using a cut-off grade of 0.3 g/t Au and internal dilution of no more than 1.0 metres at grades less than 0.3 g/t Au and assays are not capped (see QA/QC Procedures). (3) Drill core photos shown in Appendix B. Figure 1 – Newly Reported Drillholes NBR-26-29, 30 Figure 2 – Newly Reported Drillholes NBR-26-30, 31, 32 Note: The bottom of NBR-26-30 deviated southeast and is represented in both sections. Figure 1: Section B-B1 incorporates drillholes NBR-26-06, 07, 08, 25, 26, 27, 28, 29 and part of 30. Gold mineralization extends southeast into the syenite as exhibited in NBR-26-29. NBR-26-30 is identified in both sections A-A1 and B-B1 as the drillhole was collared along section A-A1 but deviated southeast, intersecting gold mineralization in the mafic volcanics in section B-B1. Figure 2: A-A1 incorporates drillholes NBR-26-03, 04, 05, 23, 24, 30, 31 and 32. NBR-26-31 exhibits gold mineralization both within the syenite (at the contact) and within a "flow breccia" within the hematite altered mafic volcanic at the contact. NBR-26-32 is typified by blocky faulted ground with lamprophyre dykes and gold mineralization in the hematite altered mafic volcanics in a brecciated quartz vein with angular syenitic fragments. William Love, Chief Executive Officer of New Break commented, "Ongoing drilling this summer in the Zavitz gold zone continues to deliver significant gold values, with gold mineralization intercepted in every drillhole. As depicted in Figures 1 and 2, gold mineralization has been encountered predominantly within the mafic volcanics. Importantly, drillholes NR-26-29 and NR-26-32, the deepest drilled to date, demonstrate that gold mineralization extends into the syenite to the southeast at the contact with the mafic volcanics." He further noted, "The intrusive-mafic volcanic contact in the Zavitz gold zone has a distinctive magnetic high. This could be reflective of the higher proportion of iron in these mafic volcanics, which is associated with the higher gold values. This same magnetic and IP signature has been identified elsewhere in areas also believed to be along the intrusive-mafic volcanic contact. Drilling these never before tested targets with the goal of identifying gold mineralization similar to that encountered in the Zavitz zone represents the potential for significantly expanding the Moray gold discovery. There is also the belief that the Zavitz zone could represent the first of a series of stacked mineralized gold zones, which would point to the potential for a much larger gold system at depth. We plan to test this through deeper drilling directly into the Zavitz zone." About the Moray Gold Project The Moray property is located in the heart of the Ontario Abitibi greenstone belt, 49 km southeast of Timmins surrounded by a number of significant gold producing companies and existing mills (see Figure 3). The Young-Davidson gold mine operated by Alamos Gold Inc., with its 8,000 tonne per day mill is the closest and within a short trucking distance of approximately 45 km by road from Moray. The understanding of gold mineralization at Moray continues to evolve with each round of drilling. The occurrence of gold mineralization extending into the syenite to the southeast of the Zavitz zone and in the deepest drillholes is noteworthy given the presence of syenite-hosted mineralization at Young-Davidison. More recent examination of the drill core also suggests that the gold mineralization discovered to date may resemble an intrusion related style of deposit like Agnico Eagle's Upper Beaver gold deposit east of Kirkland Lake, as opposed to a structurally hosted gold system. Both Young-Davidson and Upper Beaver host multi-million ounce gold deposits. Figure 3 – Moray Location Map: Surrounding Gold Producers and Upper Beaver Gold Project Technical Content and Qualified Person The scientific and technical information contained in this news release has been reviewed and approved by Peter C. Hubacheck, P. Geo, consulting geologist to New Break, and an independent Qualified Person as defined by National Instrument 43-101. Mr. Hubacheck certifies that this news release fairly and accurately reflects the technical information and data presented. New Break conducts its exploration activities in accordance with CIM Best Practices Guidelines. QA/QC Procedures QA/QC procedures were executed to ensure all work is conducted in accordance with best practices. All drill core was sawn in half with one half of the core prepared for shipment and the other half retained for future verification. All core is under watch from the drill site to the core processing facility. Drill core is BQTK size and sample intervals range from 0.5 metres to 1.0 metres in length. Commercially prepared certified reference material ("CRM") standards and blanks were inserted with each shipment at a rate of 1 QAQC sample in every 12 core samples. Samples from New Break's 2026 Moray drilling program were analyzed at Activation Laboratories in Timmins, Ontario, which is ISO 17025 certified, by 30-gram fire assay with atomic absorption finish. Any sample assaying greater than 10.0 g/t Au was re-assayed with fire assay gravimetric analysis. Grade composite intervals over core lengths are calculated using a weighted average grade with a cut-off grade of 0.3 g/t Au. Up to 1.0 m of internal dilution (consecutive interval below cut-off grade) are included within specific geologic domains and alteration assemblages, except as otherwise noted. The composites are constrained geologically by metasomatic alteration processes sourcing from the Fiset syenite intrusion and contact mafic volcanic rocks. Elevated gold values are coincident with hematite, silica, sericite and pyrite mineralization within structurally prepared brecciated corridors flanking the intrusion. Intervals are not true widths and no top cutting has been applied to the higher gold values. About New Break Resources Ltd. New Break is a Canadian mineral exploration company focused on its Moray gold project located 49 km southeast of Timmins, Ontario, in a well-established mining camp within proximity to existing infrastructure, and 32 km northwest of the Young-Davidson gold mine, operated by Alamos Gold Inc. Shareholders are also leveraged to exploration success in Nunavut, Canada, through New Break's 20% carried interest in the Sundog gold project and ownership of 6.0 million shares of Guardian Exploration Inc. (TSXV: GX). The Company is supported by a highly experienced team of mining professionals. Appendix A – Drillhole Data and Locations Table 2 – Moray Summer 2026 Drillhole Collar Locations Hole ID Length (m) UTM Easting UTM Northing UTM Elevation Azimuth (degrees) Dip (degrees) NBR-26-29 322.0 492703 5320285 363 220 -70 NBR-26-30 250.0 492708 5320329 363 220 -47 NBR-26-31 274.0 492708 5320329 363 220 -60 NBR-26-32 352.0 492708 5320329 363 220 -70 Total 1,198.0 Coordinates are reported in UTM Zone 17 North, with units in metres. Figure 4 – Zavitz Gold Zone – Surface Traces of 2025 and 2026 Drillholes. All of the drilling at Moray has been completed by Enviro North Exploration Inc. out of Sturgeon Falls, Ontario. Drilling in the Zavitz gold zone is shown in figure 4, with the 1,996 metres in 10 holes drilled this summer depicted in red, the 2,807 metres in 20 holes drilled from January to April 2026 shown in blue and the 1,817 metres in 8 holes drilled in 2025 shown in black. In total, 6,620 metres in 38 drillholes have been completed in the Zavitz gold zone, while New Break has completed a total of 5,372 metres in 32 drillholes of our planned 2026, 10,000 metre drilling program. Appendix B – Drill Core Photos From NBR-26-29 and NBR-26-31
New Break Resources Ltd. (CSE: NBRK) (OTCQB: NBRKF) (FSE: O91) ha... READ MORE
September 16, 2026
