Aeonian Resources Reports Initial Drill Results from Koocanusa Project, Confirming Copper-Silver System and Vectoring Toward Higher-Priority Targets
AEONIAN RESOURCES REPORTS INITIAL DRILL RESULTS FROM KOOCANUSA
PROJECT, CONFIRMING COPPER-SILVER SYSTEM AND VECTORING TOWARD
HIGHER-PRIORITY TARGETS
Vancouver, British Columbia – 5th May, 2026 - Aeonian Resources Corp. ("Aeonian" or the "Company")
(TSX.V: ALTN) is pleased to report initial results from its first diamond drill hole at the Koocanusa Project in
southeastern British Columbia, confirming the presence of a mineralized copper-silver system and providing
key geological vectoring for follow up drilling.
Highlights
• Initial drilling confirms a mineralized copper -silver system at Koocanusa , with geological
characteristics consistent with a Revett -style sediment -hosted copper model , including
stratabound mineralization, redox fronts, and structurally influenced fluid pathways
• Continuous, above-background copper mineralization observed over a broad interval in KOO26 -
01, with copper values of up to 607 parts per million (“ppm”) over 0.50 metres encountered in
targeted stratigraphy alongside key indicators of a large, evolving hydrothermal system
• Localized zones of elevated metals , including up to 77.7 grams per tonne (“ g/t”) silver, 6.11 g/t
mercury and 1.5% lead over 0.69 metres, highlight active fluid pathways and support the
interpretation of a dynamic, metal-bearing system
• Drill hole KOO26 -01 was a deliberate deep, distal test and successfully intersected the outer
limits of the system , providing clear vectoring toward higher -priority targets closer to surface
geochemical anomalies
• Results meaningfully refine targeting and demonstrate scale potential across the project , with
the Jake Target representing just one of at least 16 identified targets within a district -scale
mineralized corridor
• Program temporarily limited by seasonal access restrictions after completion of the first hole ,
with follow up drilling planned to resume shortly, focusing on high priority areas and continued
expansion of the system
“These initial results represent an important technical milestone for the Koocanusa Project,” commented
Andy Randell, CEO of Aeonian Resources. “While this first hole, KOO26-01, returned modest copper grades,
it was deliberately drilled as the deepest and most distal test of the system at our Jake Target. The presence
of copper, along with associated silver and mercury and the observation of multiple oxidation fronts, gives
us confidence that we are within a larger mineralized system and provides clear vect oring toward higher-
priority drill targets. With at least sixteen targets now currently identified across the project, we believe
Koocanusa represents a district-scale opportunity with significant discovery potential. We look forward to
returning to site shortly to complete the remaining drill holes at Jake and advance follow up drilling toward
higher priority targets across the system.”
2
Drill Program Details
The drill program at the Koocanusa Project was designed to test sediment -hosted copper mineralization
within Revett-style stratigraphy identified through integrated geochemical and geophysical targeting (see
March 16, 2026 , news release) . Drill hole KOO26 -01 was completed at the Jake Target, one of at least
sixteen targets identified across the broader project area through systematic exploration.
A total of three drill holes were planned as an initial fence across the Jake Target, designed to test from
depth toward the surface expression of the geophysical anomaly (see March 31, 2026 , news release),
however only one drill hole was completed due to seasonal access restrictions and road weight limitations.
Drill hole KOO26-01 was intentionally designed as a deep, distal test of the system, and the results confirm
that mineralization extends beyond surface anomalies. This provides critical vectoring toward higher-priority
targets located up-dip and closer to the interpreted centre of the system. Grades up to 607 ppm copper
over 0.5 m (sample L645614) were intersected from 115.5 m depth (Figure 2, Table 1).
Figure 1. Drill hole location of KOO26-01 at Jake Target
* see December 8, 2025, news release
3
Figure 2. Section through KOO26-01 (looking north)
While copper grades encountered in discrete samples are modest, KOO26 -01 intersected continuous,
above-background copper mineralization over a broad interval, consistent with the outer portions of a
sediment-hosted copper system. In this deposit style, suc h halos are a key indicator of system scale and
vectoring toward higher-grade zones (Figure 3). The Company believes on the basis of these favourable
observations it has intersected the flanks of a larger mineralized system and is now adjusting its targeting
strategy for a more aggressive and sizeable summer exploration drill campaign.
Figure 3. Sample L645614 from KOO26-01 from 115.5m depth. Copper mineralization presents as blue-green
malachite / azurite blebs with a finer groundmass of darker copper and manganese oxides, hosted in a coarse
sandstone unit. This sample returned 607ppm copper over 0.50 metres (Table 1).
In addition, KOO26-01 intersected localized vein-hosted mineralization carrying elevated silver and mercury
values, including assays of up to 77.7 g/t silver , 1.5% lead and 6.11 g/t mercury over 0.69 m (Table 1).
These occurrences are not interpreted to represent a primary hydrothermal vein system but rather reflect
* see December 8, 2025, news release
4
episodic fluid movement through the sedimentary package, likely indicative of structural controlled conduits.
The presence of elevated mercury concentrations is considered indicative of mobile fluids and supports the
interpretation of a chemically evolving system with metal zonation.
Figure 4. Drill core from KOO26-01 from 115.50m to 129.12m depth, illustrating key redox fronts crucial for copper
mineralization which were intersected in coarse sandstone layers at the top of this section.
Importantly, several oxidation fronts were observed within the drill core of KOO26 -01, providing further
evidence that the hole intersected a distal portion of the mineralizing system (Figure 4). Within sediment-
hosted copper environments, such features are commonly associated with fluid-rock interaction and redox
boundaries, which play a critical role in copper deposition. Together, these observations support the
interpretation that higher-grade mineralization may occur closer to the source of fluid flow and nearer to the
surface geochemical anomalies.
The geological characteristics observed in the drill core are consistent with a Revett-style sediment-hosted
copper model, where mineralization is stratabound within permeable sedimentary units and influenced by
both redox conditions and structural pathway s. The combined presence of copper, silver, mercury, and
oxidation features is interpreted to reflect a dynamic system in which fluids have migrated through
favourable stratigraphy, depositing metals along chemical boundaries and within structural traps. These
features are fundamental to the formation of large-scale copper systems and provide strong support for the
Company’s exploration model.
5
Importantly, the combination of continuous low -grade mineralization and discrete higher -grade zones is
characteristic of the margins of large sediment -hosted copper systems, where grades are expected to
increase toward the core of fluid pathways.
The Company believes that the combination of widespread surface geochemical anomalies, favourable
stratigraphy, and supporting geophysical signatures defines a mineralized structural corridor extending over
several kilometres. The initial drill results, while early-stage, reinforce the prospectivity of this corridor and
supports continued systematic exploration efforts.
Hole ID To (m) From (m) Width (m) Cu (ppm) Ag (g/t) Pb (%) Hg (g/t)
KOO26-01 115.50 116.00 0.50 607 1.44 - -
and 126.00 126.69 0.69 275 77.7 1.5 6.11
and 197.00 198.00 1.00 438 0.95 - -
Table 1. Anomalous Drill Hole Samples from KOO26-01
Reported intervals are drilling length, and the true width of the mineralized intervals has not yet been determined.
Next Steps
Aeonian plans to return to the Koocanusa Project in late May, following the lifting of seasonal access
restrictions. Upon return, the Company intends to complete the remaining drill holes in the planned fence
at the Jake Target, progressing from depth toward the surface anomaly, as well as test multiple additional
high priority targets along the interpreted mineralized corridor.
In parallel, the Company is undertaking additional geological mapping and prospecting programs to expand
and refine its growing pipeline of targets across the project area. These programs are designed to
systematically evaluate newly identified anomalies a nd advance them toward drill -ready status.
Archaeological work is being carried out in accordance with permit requirements and in collaboration with
First Nations partners, ensuring that future drill targets can be advanced efficiently and responsibly. The
required archaeological work has been completed at the Jake Target, allowing the Company to resume
drilling there while continuing to build out the broader project pipeline.
Hole ID Easting Northing Elevation Azi / Dip End Depth
KOO26-01 596200 5454563 1,725m 270 / -65 275m
Table 2. Drill Hole Location
All coordinates are based on WSG84, Zone 11
6
Quality Assurance and Quality Control
All drill core sample analytical results have been monitored through the Company’s quality assurance and
quality control program (QA/QC). Drill core was sawn in half at Aeonian’s dedicated and secure core logging
and processing facility at the Koocanusa exploration camp south of Cranbrook, BC.
Half of the drill core was sampled and shipped by a bonded courier in sealed and secured plastic ore bags
to the ALS Laboratory preparation facilities in North Vancouver, BC. Core samples were prepared using
standard preparation procedure Prep 31 which involves crushing the entire sample to 70% passing, splitting
off a fraction using a riffle splitter, and pulverizing this split to over 85% passing.
Following sample preparation, the pulps were sent to the ALS analytical laboratory in North Vancouver, B.C.
for analysis. ALS is registered to ISO / IEC 17025:2017 accreditations for laboratory procedures. Drill core
samples were analyzed for 49 elements by ICP-MS using ME-MS61 / Hg-MS42 method.
In addition to ALS Laboratory QA/QC protocols, Aeonian implements a rigorous internal QA/QC program that
includes the insertion of duplicates, certified reference materials (standards prepared by an independent
lab) and blanks into the sample stream. There were no significant issues identified in either the internal or
external QA/QC samples.
Qualified Person and NI 43-101 Disclosure
The scientific and technical information in this news release was reviewed and approved by Kristian
Whitehead, P .Geo., a Qualified Person as defined by NI 43-101. Mr. Whitehead is not independent of the
Company. Mr. Whitehead has verified the data disclosed in this press release, including the sampling,
analytical and test data underlying this information that has been collected. Verification procedures include
industry standard quality control practices.
About the Koocanusa Project
The Koocanusa Project is a district-scale copper-silver exploration property located in southeastern British
Columbia near the Canada-United States border. The project covers approximately 352 km² of prospective
ground within the Purcell Basin, a large Pro terozoic sedimentary basin known to host stratiform copper -
silver mineralization.
Exploration at Koocanusa has focused on identifying conductive stratigraphic horizons and structural trap
zones within Revett-equivalent sedimentary units that may host sediment-hosted copper mineralization.
The Koocanusa Project benefits from excellent infrastructure and access, including highway access on three
sides of the property and the ability to conduct exploration activities throughout the year.
The current exploration permit allows for drilling activities over a three-year period, providing the Company
with flexibility to advance exploration depending on results.
7
About Aeonian Resources Ltd.
Aeonian Resources is a Canadian mineral exploration company focused on advancing sediment -hosted
copper and critical mineral projects in British Columbia. With a strong commitment to environmental
responsibility, Indigenous engagement, and sound science, Aeonian aims to uncover the next generation of
sustainable mineral resources. For additional information, visit the Company's website
www.aeonianresources.com.
All costs in this release are in Canadian Dollars.
ON BEHALF OF THE BOARD OF AEONIAN RESOURCES CORP.
“Andy Randell”
Chief Executive Officer
For further information, please contact:
Sharyn Alexander, Corporate Communications
Telephone: +1 (604) 800 6849
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.
All statements in this press release, other than statements of historical fact, are "forward-looking information" with respect to
Aeonian within the meaning of applicable securities laws, including statements with respect to the Company’s planned drilling and
exploration activities. The Company provides forward-looking statements for the purpose of conveying information about current
expectations and plans relating to the future and readers are cautioned that such statements may not be appropriate for other
purposes. By its nature, this information is subject to inherent risks and uncertainties that may be general or specific and which
give rise to the possibility that expectations, forecasts, predictions, projections or conclusions will not prove to be accurate, that
assumptions may not be correct, and that objectives, strategic goals and priorities will not be achieved. These risks and
uncertainties include but are not limited to those identified and reported in Aeonian’s public filings under Aeonian Resources
SEDAR profile at www.sedarplus.ca. Although Aeonian has attempted to identify important factors that could cause actual actions,
events or results to differ materially from those described in forward-looking information, there may be other factors that cause
actions, events or results not to be as anticipated, estimated or intended. There can be no assurance that such information will
prove to be accurate as actual results, and future events could differ materially from those anticipated in such statements.
Aeonian disclaims any intention or obligation to update or revise any forward-looking information, whether as a result of new
information, future events or otherwise unless required by law.