Identifies High-Priority Drill Targets At Copeçal
GoldHaven Reports Independent Review Confirming Large-Scale
Hydrothermal System and Identifies High-Priority Drill Targets at
Copeçal
Vancouver, British Columbia – May 1 st, 2026 – GoldHaven Resources Corp. (“GoldHaven” or the
“Company”) is pleased to report that an independent specialist geology consultant has validated
and enhanced the geological understanding of the Company’s 100% -owned Copeçal Project
(“Copeçal” or the “Project”) in Mato Grosso State, Brazil, following a detailed review of drill core and
data from the Company’s inaugural diamond drilling program of 9 holes totaling 1,085.7m.
HIGHLIGHTS
• Independent review confirms potential for large-scale, structurally controlled
hydrothermal gold system
• Clear vectors to higher-grade mineralization at both East and West Targets
• ~6 km gold -in-soil anomaly defining a district -scale system with large, underexplored
zones, originally identified by AngloGold Ashanti
• West Target: Gold linked to fold hinge zones and increasing sheeted vein density providing
a vector towards potentially stronger mineralization.
• East Target: Copper-gold system with zoned sulphide assemblages (chalcopyrite–bornite)
providing a higher temperature vector.
• Alta Floresta Gold Belt: Situated within a prolific and emerging gold district
• Multiple high -priority targets: System remains open with significant follow-up drilling
potential
The independent review confirms and reinforces Copeçal’s potential as a large -scale mineralized
system with clear vectors toward higher -grade zones, while highlighting multiple untested high -
priority targets. This meaningfully enhances the project’s exploration potential ahead of drilling and
underpins GoldHaven’s strategy to advance an expanded drill program in 2026.
Gustavo Almeida, Senior Project Geologist, Brazil, commented:
“The geological features identified at Copeçal with the initial phase of drilling remain encouraging
and consistent with the expected signature of an intrusion-related, hydrothermal system. The
presence of strong structural kinematic indicators, sheeted veining with quartz rimmed with biotite
indicating potassic alteration at the West Target and the appearance of zoned chalcopyrite-pyrite
and chalcopyrite-bornite sulphide assemblages associated with surface gold enrichment in soil and
saprolite at the East Target, suggests we are vectoring towards stronger mineralization. At the scale
of the pr oject, the association of gold and gold-copper anomalism with fold hinge structures and
magnetic features provides a clear and technically sound framework for follow-up drilling.”
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INDEPENDENT GEOLOGICAL REVIEW – KEY FINDINGS
The independent consultant conducted a detailed review of geological data and drill core ,
confirming that mineralization at Copeçal is controlled by structural architecture and hydrothermal
alteration systems.
West Target – Structural Control & Gold Enrichment
At the West Target, the consultant identified:
• Higher-grade gold enrichment associated with asymmetric to isoclinal fold structures
• Dense sheeted quartz veinlet systems hosted within phyllic altered meta-granodiorite
• Potassic alteration, evidenced by crystalline biotite along vein margins within wide intervals
indicating potential for a robust hydrothermal system along strike to the west and at depth .
Importantly:
• The core of the West Target gold -in-soil anomaly remains largely untested and represents a
high-priority drill target
• This anomaly aligns with a fold hinge and closure zone interpreted from drone magnetic data.
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Figure 1. West Target Hole COP E PDH-008 showing meta-granodiorite hosting multiple sheeted
veins associated with asymmetric to isoclinal fold structures. B iotite margins along quartz veins
indicate potassic alteration.
East Target – Mineral Zonation & Vectoring
At the East Target, the consultant confirmed:
• A northerly dipping, shear-hosted mineralized zone
• Distinct zoned sulphide assemblages:
o Chalcopyrite–pyrite
o Chalcopyrite–bornite, suggesting increasing temperature and pro viding a
temperature vector.
• Elevated magnetic susceptibility in the core of the system
These features represent a clear vector towards potential stronger mineralization, both at depth
and along strike.
Figure 2. East Target Hole COP PDH -009 Phyllically (sericite) altered, sheared meta-granite with
bornite – chalcopyrite mineralization within a silicified - brecciated zone.
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STRONG HISTORICAL FOUNDATION
The Copeçal Project benefits from historical exploration conducted by AngloGold Ashanti, which
invested approximately US$1 million in exploration.
Key highlights include:
• A ~6-kilometre gold-in-soil anomaly, demonstrating district-scale potential
• Identification of multiple target zones across the Project
• Location within the Juruena Magmatic Arc / Alta Floresta Gold Belt, a known gold-producing
terrane
GoldHaven’s modern work has validated and refined these targets, advancing the Project to its drill
program.
MODERN EXPLORATION PROGRAMS
• 107 auger drill holes (2,153 metres) defining gold anomalies
• VLF-EM survey completed by Avant Geofísica
• Drone magnetic surveys identifying fold structures and intrusive controls
• Integrated targeting using geochemistry, geophysics, and structural interpretation
INTERPRETATION & NEXT STEPS
The independent review confirms Copeçal as a potentially large-scale hydrothermal system with
strong structural controls and intrusion-related, porphyry -style alteration signatures. These
combined structural, alteration, and sulphide characteristics are consistent with systems that host
higher-grade mineralization at depth, significantly increasing the probability of success in follow-up
drilling.
GoldHaven is advancing:
• Detailed structural modelling and 3D interpretation
• Target refinement across both East and West zones
• Phase II drill program (Q2) to test high-priority structural and geophysical targets
CEO COMMENTARY
“This independent review adds important technical validation and strengthens our confidence that
Copeçal hosts a large -scale mineralized system,” stated Rob Birmingham, CEO of GoldHaven.
“Importantly, we are now seeing clear vectors toward stronger minerali zation at both the East and
West targets, with significant portions of the system still untested. As we move into our next phase
of drilling, we believe Copeçal has the potential to deliver meaningful exploration results.”
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Figure 3. Image showing the location of drilling + results on East and West gold anomalies at Copeçal.
About the Copeçal Gold Project: A Brief History
The Copeçal Gold Project is strategically situated within the Alta Floresta Gold Province, a
historically productive region that has yielded substantial gold discoveries since the late 1970s.
GoldHaven’s tenements cover a total of 3,681 hectares in a geologically favourable setting within
the Juruena Gold Province of Brazil.
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Figure 4: Location of the Copeçal Gold Project within Alta Floresta gold province, with competitor
locations.
The Juruena Gold Province, also known as the Juruena Magmatic Arc, is an orogenic belt highly
prospective for mesothermal shear-related and intrusion-related gold deposits, such as G-Mining’s
Tocantinzinho deposit. Additionally, the region hosts recently i dentified porphyry -style deposits
(e.g., Serabi, Jaca) and epithermal -style deposits (e.g., X1, Aura). The presence of multiple deposit
styles, along with the confirmation of large -scale gold deposits in the Juruena Province of Brazil,
underscores the significant potential of the Copeçal Gold Project.
Recent exploration programs, including geochemical soil sampling, drone -mounted magnetometry
surveys, and historical drilling data, indicate the presence of multiple gold -bearing structures.
Notably, AngloGold Ashanti previously conducted systematic exploration on the property from 2010
to 2016, including auger and air -core drilling, geophysical surveys, and rock geochemistry,
identifying multiple zones of anomalous gold mineralization.
The Copeçal Gold Project benefits from extensive historical work, with AngloGold Ashanti’s
exploration confirming gold and arsenic anomalies, indicative of significant mineralization potential.
Soil sampling grids and follow -up auger drilling in key areas revealed consistent gold values over
wide zones, further supporting the presence of a substantial mineralized system.
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About GoldHaven Resources Corp.
GoldHaven Resources Corp. is a Canadian junior exploration Company focused on acquiring and
exploring highly prospective land packages in North and South America. The Company’s projects
include (i) the flagship Magno Project, a district -scale polymetallic property adjacent to the historic
Cassiar mining district in British Columbia; (ii) the Three Guardsman Project, which exhibits
significant potential for copper and gold -skarn mineralization; (iii) the Copeçal Gold Project, a drill -
ready gold project located in Mato Grosso, Brazil with a 6km strike of anomalous gold in soil samples;
and (iv) three critical mineral projects with extensive tenement packages totalling 123,900 hectares:
Bahia South, Bahia North and Igautu projects located in Brazil.
Qualified Person:
The scientific and technical information disclosed in this document has been reviewed and
approved by Jonathan Victor Hill, B.Sc. Hons, FAusIMM, a non-independent Qualified Person
consistent with NI 43-101 and Country Manager of GoldHaven.
On Behalf of the Board of Directors
Rob Birmingham, Chief Executive Officer
For further information, please contact:
Rob Birmingham, CEO
www.GoldHavenresources.com
Office Direct: (604) 629-8254
The CSE and Information Service Provider have not reviewed and does not accept responsibility for
the accuracy or adequacy of this release.
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