Aldebaran Reports the Results from Seventeen Infill Holes at the Altar Copper-Gold Project in San Juan Argentina
NEWS RELEASE
Aldebaran Reports the Results from Seventeen Infill Holes at the Altar Copper-Gold
Project in San Juan Argentina
VANCOUVER, CANADA (August 7, 2025) – Aldebaran Resources Inc. (“Aldebaran” or the “Company”) (TSX-
V: ALDE, OTCQX: ADBRF) is pleased to provide results of the remaining 17 holes from the infill drilling program
at the Altar project in San Juan, Argentina. The goal of these holes was to upgrade resource blocks classified as
Inferred to the Measured & Indicated categories. All holes reported today were focused either on the Altar Central,
Altar East or Altar United zones. All holes for the 2024/2025 field program have now been reported.
Highlights
ALD-25-057EXT
• 816.15 m of 0.53% CuEq from 184.00 m depth
o Including 410.00 m of 0.68% CuEq from 530.00 m depth
ALD-25-081DEXT
• 491.10 m of 0.51% CuEq from 411.00 m depth
o Including 137.00 m of 0.61% CuEq from 622.00 m depth
• Original extension hole ALD-25-081EXT was lost due to technical problems and 81DEXT was drilled to by-
pass some trapped tools
ALD-25-132EXT
• 721.15 m of 0.41% CuEq from 144.00 m depth
o Including 112.15 m of 0.66% CuEq from 753.00 m depth
ALD-25-183EXT
• 736.00 m of 0.35% CuEq from 240.00 m depth
o Including 138.00 m of 0.61% CuEq from 838.00 m depth
ALD-25-251B
• 836.60 m of 0.44% CuEq from 247.00 m depth
ALD-25-252
• 561.50 m of 0.42% CuEq from 438.50 m depth
ALD-25-255
• 685.80 m of 0.41% CuEq from 299.70 m depth
o Including 371.50 m of 0.57% CuEq from 614.00 m depth
§ Including 214.00 m of 0.71% CuEq from 688.00 m depth
John Black, Chief Executive Officer of Aldebaran, commented: “With all holes from the 2024/2025 field program
now reported, the next major milestones for the Altar project are the PEA in Q3-2025, the mineral resource update
in Q4-2025/Q1-2026, and the PFS in Q4-2026. The results from the infill program continue to demonstrate the size
of the Altar project, which remains open in several directions.”
Kevin B. Heather, Chief Geological Officer of Aldebaran, commented: “The results reported today, along with
the previously released batch of holes, demonstrate the continuity and grade consistency of the Altar mineralization,
which will increase the confidence level of the next mineral resource as we move the project to the PFS stage.”
Table 1 below shows detailed assays for all 17 holes. Figure 1 displays a plan map of the completed drill hole locations,
while figures 2 to 8 display cross sections of the holes reported herein.
Table 1 - Drill Hole Results
From
(m)
To
(m)
Interval
(m)
Cu
(%)
Au
(g/t)
Ag
(g/t)
Mo
ppm
As
(ppm)
CuEq
(%)
ALD-25-030BEXT - Total Depth 800.00 m
Interval 47.00 169.00 122.00 0.15 0.03 0.37 10 485 0.16
Interval 321.00 407.25 86.25 0.18 0.03 0.31 12 174 0.19
Interval 432.30 519.00 86.70 0.14 0.02 1.08 11 159 0.16
Interval 713.00 800.00 87.00 0.15 0.02 1.63 25 234 0.17
ALD-25-057EXT - Total Depth 1,000.15 m
Interval 184.00 1,000.15 816.15 0.50 0.05 0.98 57 263 0.53
Incl. 530.00 940.00 410.00 0.64 0.04 1.06 81 207 0.68
ALD-25-081DEXT - Total Depth 902.10 m
Interval 411.00 902.10 491.10 0.47 0.03 1.01 91 93 0.51
Incl. 622.00 759.00 137.00 0.56 0.04 1.07 150 84 0.61
And 805.00 902.10 97.10 0.60 0.03 1.25 93 56 0.64
ALD-25-132EXT - Total Depth 865.15 m
Interval 96.00 865.15 769.15 0.37 0.03 0.62 51 199 0.39
Incl. 144.00 865.15 721.15 0.38 0.03 0.65 52 191 0.41
Incl. 753.00 865.15 112.15 0.62 0.03 1.36 73 48 0.66
ALD-25-171EXT - Total Depth 560.00 m
Interval 70.00 560.00 490.00 0.29 0.08 0.61 22 188 0.32
ALD-25-180EXT - Total Depth 991.20 m
Interval 496.00 991.20 495.20 0.23 0.06 0.88 43 102 0.26
ALD-25-183EXT - Total Depth 976.00 m
Interval 240.00 976.00 736.00 0.31 0.07 1.08 56 137 0.35
Incl. 838.00 976.00 138.00 0.55 0.12 2.03 59 71 0.61
ALD-25-200EXT - Total Depth 602.50 m
Interval 559.00 602.50 43.50 0.26 0.03 0.36 46 4 0.28
ALD-25-250 - Total Depth 1,012.00 m
Interval 418.00 1,012.00 594.00 0.35 0.04 1.05 84 473 0.39
Incl. 902.00 932.00 30.00 0.53 0.05 1.36 79 472 0.57
ALD-25-251B - Total Depth 1,083.60 m
Interval 74.00 192.00 118.00 0.26 0.07 0.81 19 96 0.29
Interval 247.00 1,083.60 836.60 0.40 0.07 1.37 25 204 0.44
Incl. 513.00 557.00 44.00 0.53 0.11 1.45 22 265 0.58
And 910.10 1,000.00 89.90 0.55 0.06 1.63 25 173 0.59
ALD-25-252 - Total Depth 1,000.00 m
Interval 438.50 1,000.00 561.50 0.38 0.05 4.04 41 481 0.42
From
(m)
To
(m)
Interval
(m)
Cu
(%)
Au
(g/t)
Ag
(g/t)
Mo
ppm
As
(ppm)
CuEq
(%)
ALD-25-253 - Total Depth 853.00 m
Interval 524.00 608.00 84.00 0.12 0.06 1.26 19 133 0.15
Interval 695.00 853.00 158.00 0.18 0.04 0.61 42 54 0.21
ALD-25-254 - Total Depth 887.00 m
Interval 506.00 587.00 81.00 0.14 0.03 0.39 41 137 0.17
Interval 601.00 715.00 114.00 0.11 0.02 0.33 36 18 0.13
Interval 801.00 887.00 86.00 0.12 0.03 0.52 57 75 0.15
ALD-25-255 - Total Depth 985.50 m
Interval 299.70 985.50 685.80 0.39 0.03 0.76 50 125 0.41
Incl. 614.00 985.50 371.50 0.54 0.03 1.06 79 98 0.57
Incl. 688.00 902.00 214.00 0.68 0.04 1.04 76 31 0.71
ALD-25-256 - Total Depth 978.60 m
Interval 213.00 370.00 157.00 0.19 0.14 1.05 9 369 0.24
Interval 406.00 978.60 572.60 0.30 0.04 1.02 36 210 0.33
ALD-25-257 - Total Depth 930.00 m
Interval 351.00 930.00 579.00 0.28 0.05 1.75 32 418 0.31
ALD-25-258 - Total Depth 900.00 m
Interval 617.00 900.00 283.00 0.31 0.02 1.02 55 109 0.33
The grades are uncut. CuEq values were calculated using copper, gold, silver, and molybdenum. Metal prices utilized for the calculations are
Cu = US$3.00/lb, Au = US$1,400/oz, Ag = US$18/oz, and Mo = US$10/lb. Recoveries used for the supporting metals found in the CuEq
equation are as follows: Au = 50%, Ag = 51%, (based on historical metallurgical test work) and Mo = 70% (benchmarking from similar
deposits). The formula utilized to calculate equivalent values is CuEq % = Cu % + (Au g/t * 0.34025) + (Ag g/t * 0.00446) + (Mo ppm *
0.00023). EXT indicates the hole was extended from a previously drilled hole
Qualified Person
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.
ON BEHALF OF THE ALDEBARAN BOARD
(signed) “John Black”
John Black, Chief Executive Officer and Director
Tel: +1 (604) 685-6800
Email: [email protected]
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Ben Cherrington
Manager, Investor Relations
Phone: +1 347 394-2728 or +44 7538 244 208
Email: [email protected]
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. 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).
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.
Sampling and Analytical Procedures
Altar follows systematic and rigorous sampling and analytical protocols which meet and exceed industry standards.
These protocols are summarized below and are available on the Aldebaran website at www.aldebaranresources.com.
All drill holes are diamond core holes with PQ, HQ or NQ core diameters. 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. 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. 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. 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. 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. 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. Samples with results that exceed
maximum detection values for gold are re-analyzed by fire assay with a gravimetric finish and other elements of
interest are re-analyzed using precise ore-grade ICP analytical techniques. 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. 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.
Forward-Looking Statements
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. 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.
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, 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.
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. 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. 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.
Figure 1 – Location Map of Drill Holes Completed in the 2024/2025 Field Season
Figure 2 – Holes ALD-25-132EXT, ALD-25-081D and ALD-25-256 in Cross Section (Looking Northeast).
Figure 3 – Holes ALD-25-251B and ALD-25-255 in Cross Section (Looking Northeast).
Figure 4 – Holes ALD-25-180EXT, ALD-25-183EXT, ALD-25-200 and ALD-25-251B in Cross Section (Looking
North).