Aeonian Expands Koocanusa Copper Project to Approximately 412 KM²; Fieldwork Underway Across Four New Target Areas
AEONIAN EXPANDS KOOCANUSA COPPER PROJECT TO APPROXIMATELY 412 KM²;
FIELDWORK UNDERWAY ACROSS FOUR NEW TARGET AREAS
Vancouver, British Columbia – August 13th, 2026 – Aeonian Resources Corp. (TSX-V: ALTN) ("Aeonian" or
the "Company") is pleased to announce the acquisition of four additional mineral tenures at its 100%-owned
Koocanusa Copper Project in southeastern British Columbia.
The four new tenures total approximately 52 square kilometres (“km²”), increasing the Koocanusa Project
from approximately 360 km² to approximately 412 km².
The claims secure four previously unexplored areas identified from regional geology, airborne geophysics
and surface geochemistry. Field crews are currently evaluating the new ground while also collecting
additional structural data across Koocanusa.
Information gained from Aeonian's first five drill holes at Jake is now being incorporated into this regional
exploration program. While the drilling did not intersect economic copper grades, it provided the Company's
first detailed look beneath surface an d improved its understanding of the stratigraphy, structures and
alteration associated with the copper system.
Highlights
• Four new mineral tenures totaling approximately 52 km², expanding Koocanusa to approximately
412 km².
• New Tenure 1136819 extends the western copper trend approximately 6.7 km northwest of Jake,
along strike of favourable Middle Creston Formation C2 stratigraphy.
• Airborne EM responses within Tenure 1136819 are visible across Channels 5, 9 and 14.
• Approximately 1.5 km southeast of the new tenure, surface sampling along the same broader trend
returned up to 554 ppm copper and 89.8 ppb gold.
• Tenure 1136819 also lies near a transition between relatively high and lower reduced -to-pole
magnetic responses.
• Three additional tenures secure a major Aldridge –Creston stratigraphic contact, a four -kilometre
Kitchener Formation conductive corridor, and an eastern extension of favourable C2-C3 stratigraphy.
• Field crews are currently active across the new claims undertaking mapping, prospecting, sampling
and geophysical follow-up.
• Additional structural measurements are being collected to help define potential controls on fluid
movement and copper mineralization.
• Principal Koocanusa mineral claims have been extended to August 2028 through the filing of 2026
exploration expenditures.
CEO Commentary
"When we applied for these claims, we were working primarily from regional geology, surface geochemistry
and airborne geophysics. Our first drill program has since given us something we did not previously have –
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a detailed look at the geology beneath surface," said Andy Randell, P.Geo., Chief Executive Officer of Aeonian
Resources.
"Although the first five holes at Jake did not return economic copper grades, they helped us understand the
system considerably better. Five holes at one target cannot test a property of this scale, but they can tell us
what geological features we should be looking for elsewhere."
"Tenure 1136819 is a good example. It extends the western trend 6.7 kilometres northwest of Jake along
favourable C2 stratigraphy and combines an EM response, nearby anomalous copper and gold
geochemistry, and a magnetic transition. None of those features alone confirms mineralization, but together
they give us a clear target to investigate."
"Our crews are already on the ground testing these new areas and continuing to build the structural dataset
across Koocanusa. The objective is to use what we learned from drilling to progressively narrow more than
400 square kilometres of prospective ground into the strongest targets for future work."
Four New Regional Targets
The new tenures were identified through Aeonian's ongoing review of regional geological, geochemical and
geophysical datasets.
Above: Koocanusa claims showing new tenures as blue outlined blocks
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The Company's exploration model is increasingly focused on areas where favourable host rocks, structures
and evidence of hydrothermal fluid movement occur together, rather than treating individual copper
showings as isolated targets.
Tenure 1136819 – Western C2 Extension – 4.85 km²
Tenure 1136819 is located approximately 6.7 km northwest of Jake along the Company's western
copper trend.
The claim follows favourable Middle Creston Formation C2 stratigraphy and contains an airborne
EM response visible across Channels 5, 9 and 14.
Approximately 1.5 km southeast of the tenure, along the continuation of the broader geological and
geophysical trend, previous surface sampling returned values of up to 554 ppm Cu and 89.8 ppb
Au.
The claim also sits near a transition between relatively high and lower magnetic responses. The
relationship between this magnetic boundary, the EM anomaly and favourable C2 stratigraphy will
be investigated during current fieldwork.
Forestry trails provide practical access into the target area.
Tenure 1136520 – Aldridge–Creston Contact – 17.0 km²
Tenure 1136520 secures a previously unexplored section of the regional Aldridge –Creston
Formation contact where airborne EM data show persistent conductive responses on Channels 5
and 9.
Historical mapping immediately east of the tenure also documents chalcopyrite mineralization,
although no analytical results are available from that occurrence.
Tenure 1136521 – Kitchener Conductive Corridor – 18.0 km²
Tenure 1136521 covers a previously unexplored airborne EM trend extending for more than four
kilometres east of the Gilnockie area.
The conductive trend broadly follows Kitchener Formation stratigraphy and may represent a
conductive stratigraphic horizon, structural pathway or sulphide -bearing contact requiring field
verification.
Tenure 1136522 – Eastern C2-C3 Extension – 12.2 km²
Tenure 1136522 secures an additional section of favourable Middle and Upper Creston Formation
stratigraphy east of the Jake and Oke Creek areas.
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The C2-C3 units form an important part of Aeonian's regional exploration model and are associated
with numerous copper occurrences across Koocanusa.
Applying What We Learned From Drilling
Aeonian's 2026 drill program at Jake completed five holes totaling approximately 1,229 metres and provided
the Company's first detailed subsurface dataset from the western copper trend.
Although economic copper grades were not encountered, the drilling provided valuable information on
stratigraphy, alteration, sulphide distribution and structural features.
That information is now being applied across the wider property.
More than 1,800 structural measurements h ave been collected across Koocanusa to date. Current field
crews are adding to this dataset to better understand structures that may have influenced the movement of
mineralizing fluids and the potential concentration of copper.
The goal is straightforward: use relatively low -cost surface exploration to identify where the strongest
geological, geochemical and geophysical evidence overlaps before advancing the best targets toward future
drilling.
Active Field Program
Field crews are currently evaluating the new tenure blocks through:
• Geological mapping and prospecting;
• Rock and soil sampling;
• Structural measurements;
• Ground investigation of airborne EM and magnetic features; and
• Integration of new results with existing geochemical, geophysical and drill data.
Results from this work will be use d to rank targets across the expande d Koocanusa Project for further
exploration.
Mineral Tenure Update
Exploration expenditures from the Company's 2026 diamond drilling program have been filed through British
Columbia's Mineral Titles Online system.
As a result, the principal Koocanusa mineral claims are now in good standing until August 2028.
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Qualified Person
The scientific and technical information contained in this news release has been reviewed and approved
by Andrew Randell, P.Geo., a Qualified Person as defined by National Instrument 43-101 – Standards of
Disclosure for Mineral Projects. He has verified the data disclosed in this press release, including the
sampling, analytical and test data underlying this information that has been collected. Mr. Randell is not
independent of the Company.
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 412 km² of prospective
ground within the Purcell Basin, a large Proterozoic 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.
About Aeonian Resources Corp.
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 .
ON BEHALF OF THE BOARD OF AEONIAN RESOURCES CORP.
“Andy Randell”
Chief Executive Officer
For further information, please contact:
Sharyn Alexander, Corporate Communications
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Telephone: +1 (604) 800 6849
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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
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events or results to differ materially from those described in forward-looking information, there may be other factors that cause
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