Aldebaran Resources Inc. (“Aldebaran” or the “Company”) (TSX-V: ALDE, OTCQX: ADBRF) is pleased to provide results of six holes from the 2025-2026 infill and geotechnical drilling program at the Altar project in San Juan, Argentina.
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Inc. → please → Juan
The goal of these holes was to upgrade resource blocks classified as Inferred to the Measured & Indicated categories and in some cases, also for geotechnical purposes.
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goal → upgrade → purposes
- 1,354 m of 0.41% CuEq1 from 56 m depth
- Including 107 m of 0.61% CuEq1 from 646 m depth
- and 162 m of 0.61% CuEq1 from 893 m depth
ALD-26-263
- 1,336 m of 0.38% CuEq1 from 213 m depth
- Including 124 m of 0.69% CuEq1 from 670 m depth
- 1,336 m of 0.38% CuEq1 from 213 m depth
- Including 124 m of 0.69% CuEq1 from 670 m depth
1For individual assays for all metals, see Table 1
John Black, Chief Executive Officer of Aldebaran, commented: “Today’s drill results are a reminder of the impressive scale of Altar’s high-grade cores and the significant size of the project.
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results → include → project
Looking ahead, the upcoming mineral resource estimate, expected in October of this year, will establish the foundation for the pre-feasibility study expected in Q2/Q3 2027.”
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estimate → look → Q2
Kevin B. Heather, Chief Geological Officer of Aldebaran, commented: “Many of these reported holes were oriented drill holes designed for geotechnical purposes; however, they were also designed to provide essential infill data for resource category conversion from Inferred to Indicated and Measured for the upcoming mineral resource estimate.
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they → comment → estimate
The oriented drill holes also allow us to better understand and constrain the orientations in 3D-space of lithological contacts, faults, fractures, and veins; all of which enhance our geological model for the upcoming resource estimate and form the basis for both the open pit and potential underground designs in the PFS mine plan.
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all → orient → plan
Table 1 below shows detailed assays for all six holes.
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Table → show → holes
Figure 1 displays a plan map of the completed drill hole locations, while Figures 2 to 7 display cross sections of the holes reported herein.
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Figures → display → holes
Holes with the suffix EXT are extensions of previously drilled holes.
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Holes → drill → holes
Turnaround times at assay labs have been much longer than expected, which has led to delays in releasing drill results from the previous field campaign.
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which → expect → campaign
It is expected all final assays should be received shortly.
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assays → expect → ?
Due to the delay in receiving assays, the completion of the updated mineral resource estimate will be pushed out by one month to October 2026.
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completion → receive → October
This isn’t expected to delay the pre-feasibility timeline, with expected delivery in Q2/Q3 2027.
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This → expect → Q2
The scientific and technical data contained in this news release has been reviewed and approved by Dr. Kevin B. Heather, B.Sc. (Hons), M.Sc, Ph.D, FAusIMM, FGS, Chief Geological Officer and director of Aldebaran, who serves as the qualified person (QP) under the definitions of National Instrument 43-101.
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who → contain → Instrument
ON BEHALF OF THE ALDEBARAN BOARD
(signed) “John Black”
John Black, Chief Executive Officer and Director
Tel: +1 (604) 685-6800
Email: info@aldebaranresources.comPlease click here and subscribe to receive future news releases: https://aldebaranresources.com/contact/subscribe/
For further information, please consult our website at www.aldebaranresources.com or contact:
Ben Cherrington
Manager, Investor Relations
Phone: +44 7538 244 208
Email: ben.cherrington@aldebaranresources.comAbout 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.
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that → sign → team
Aldebaran holds an 80% interest in the Altar copper-gold project in San Juan Province, Argentina.
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Aldebaran → hold → Province
The Altar project hosts multiple porphyry copper-gold deposits with potential for additional discoveries.
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project → host → 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).
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which → form → Pelambres
In November 2024 the Company announced an updated mineral resource estimate for Altar, prepared by Independent Mining Consultants Inc. and based on the drilling completed up to and including the 2023-24 field season (independent technical report prepared by Independent Mining Consultants Inc., 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)
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Company → announce → release
In October 2025 the Company announced a Preliminary Economic Assessment (PEA) for the Altar Project (independent technical report prepared by SRK Consulting Inc, Denver, Colorado, 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).
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Company → announce → release
Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.
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term → define → release
Sampling and Analytical Procedures
Altar follows systematic and rigorous sampling and analytical protocols which meet and exceed industry standards.
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which → follow → standards
These protocols are summarized below and are available on the Aldebaran website at www.aldebaranresources.com.
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protocols → summarize → www.aldebaranresources.com
Drill core is collected at the drill site where recovery and RQD (Rock Quality Designation) measurements are taken before the core is boxed and transported to the Altar camp facilities, a short distance away, where the whole core is photographed under more optimum lighting conditions and geological quick log is produced.
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log → collect → conditions
The whole-core is then marked and sampled into geological defined, systematic 1- to 2-metre sample intervals, unless the geologist determines the presence of an important geological contact, which should not be crossed.
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which → mark → contact
The whole-core is then cut-in-half with a diamond saw blade, with half the sample retained in the core box for future reference and the other half placed into a pre-labelled plastic bag, sealed with a two plastic security zip ties, and labeled with a unique sample number.
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half → cut → number
The bagged samples are then placed into larger plastic sacks, and those sacks are sealed with another plastic security zip tie and labelled for shipment.
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sacks → bag → shipment
The sacks are then placed onto wooden pallets and wrapped in plastic shrink-wrap and stored in a secure area pending shipment to a certified ALS laboratory sample preparation facility located in Mendoza, Argentina, where the samples are dried, crushed, and pulverized.
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samples → place → Mendoza
The resulting sample pulps are sent by batch to the ALS laboratory in Lima for geochemical assay analysis, including a 30g fire assay with an atomic absorption (AA) finish analysis for gold and a full multi-acid digestion (4-acid) with ICP-AES analysis for other elements.
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pulps → result → elements
Samples with results that exceed maximum detection values for gold are re-
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that → exceed → gold
Aldebaran independently inserts certified control standards (Super Certified Reference Materials (SCRM’s), coarse field blanks, and duplicates into the sample stream to monitor data quality.
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Aldebaran → insert → quality
These control samples represent 10-12% of the total samples submitted and are inserted “blindly” to the laboratory in the sample sequence prior to departure from the Aldebaran facilities.
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samples → represent → facilities
Certain statements regarding Aldebaran, including management’s assessment of future-plans and operations, may constitute forward-looking statements under applicable securities laws and necessarily involve known and unknown risks and uncertainties, most of which are beyond Aldebaran’s control.
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most → regard → control
Often, but not always, forward-looking statements or information can be identified by the use of words such as “plans”, “expects” or “does not expect”, “is expected”, “budget”, “scheduled”, “estimates”, “forecasts”, “intends”, “anticipates” or “does not anticipate” or “believes” or variations of such words and phrases or statements that certain actions, events or results “may”, “could”, “would”, “might” or “will” be taken, occur or be achieved.
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actions → look → words
Specifically, and without limitation, all statements included in this press release that address activities, events or developments that Aldebaran expects or anticipates will or may occur in the future, including the proposed exploration and development of the Altar project described herein, and management’s assessment of future plans and operations and statements with respect to the completion of the anticipated exploration and development programs, the mineral resource estimate and pre-feasibility study, may constitute forward-looking statements under applicable securities laws and necessarily involve known and unknown risks and uncertainties, most of which are beyond Aldebaran’s control.
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most → include → control
These risks may cause actual financial and operating results, performance, levels of activity and achievements to differ materially from those expressed in, or implied by, such forward-looking statements.
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results → cause → statements
Although Aldebaran believes that the expectations represented in such forward-looking statements are reasonable, there can be no assurance that such expectations will prove to be correct.
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expectations → believe → statements
The forward-looking statements contained in this press release are made as of the date hereof and Aldebaran does not undertake any obligation to publicly update or revise any forward-looking statements or information, whether as a result of new information, future events or otherwise, unless so required by applicable securities law.
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Aldebaran → look → law
Figure 1 – Location Map of Drill Holes Completed in the 2025/2026 Field Season
Figure 2 – Hole ALD-26-267 in Cross Section
Figure 3 – Hole ALD-26-261 in Cross Section
Figure 4 – Hole ALD-26-262 Cross Section
Figure 5 – Holes ALD-26-263 in Cross Section
Figure 6 – Holes ALD-26-262 and ALD-26-264 in Cross Section
Figure 7 – Holes ALD-26-182EXT in Cross Section
Infographics accompanying this announcement are available at
- Including 763.30 m of 0.65% CuEq1 from 544 m depth
- Including 420.30 m of 0.76% CuEq1 from 887 m depth
- Including 763.30 m of 0.65% CuEq1 from 544 m depth
- Including 420.30 m of 0.76% CuEq1 from 887 m depth
- Including 763.30 m of 0.65% CuEq1 from 544 m depth
- Including 802.20 m of 0.64% CuEq1 from 678 m depth
-
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Infographics → complete → depth
