Gold Hart Copper Completes Deepest Hole Ever Drilled at Tolita Gold-Copper-Moly- Silver Asset in Vicuña Chile Obtains Final Assays Including High-Grade Copper at Nessa Copper-Gold-Silver Complex West of Kinross' La Coipa Mine With 7 Samples Grading 1.3% - 4.7% Copper
Gold Hart Copper Completes
Deepest Hole Ever Drilled at
Tolita Gold-Copper-Moly-
Silver Asset in Vicuña Chile
Obtains Final Assays Including High-Grade Copper at
Nessa Copper-Gold-Silver Complex West of Kinross' La
Coipa Mine With 7 Samples Grading 1.3% - 4.7% Copper
February 23, 2026 7:36 AM EST | Source: Gold Hart Copper Corp.
Toronto, Ontario--(Newsfile Corp. - February 23, 2026) - Gold Hart Copper Corp. (TSXV: HART)
(the "Company", "Gold Hart", or "HART") is pleased to provide an update on the drilling currently
underway at the Company's flagship Tolita gold copper molybdenum silver asset in the emerging
Vicuña Copper-Gold District of Chile. Preliminarily, the Company believes it entered the potentially
mineralized system of interest between 200m - 400m. The drill hole reached a depth of
approximately 1,053m.
Interestingly, the core continued to display encouraging characteristics, with multiple intervals
showing strong hydrothermal alterations and mineralization consistent with a fertile porphyry-
style environment. Gold Hart geologists observed multiple generations of veinlets and stockworks
with varying intensities over intervals up to several hundred meters, banded veinlets with
thicknesses of several cm, and locally chalcopyrite and bornite mineralization has been
recognized in several of these veinlets. HART geologists do not believe the drill intercepted the
same fault which caused a sterile zone in the middle of the initial 2 diamond holes.
Gold Hart recently hosted a site visit which included tours of the Tolita & Nessa assets. Gold Hart
board and advisory board members including the honourable John R. Baird, Mark Kucher, and
Aleta Shiff were also in attendance. In this 360-degree immersive video - which allows you to
interactively toggle views - Gold Hart co-founder Jonathan Warner explains the diamond drilling
process
https://cloud-va.insta360.com/share/va/374Q7q0e1K66213G4421719040 also accessible on
YouTube at https://www.youtube.com/shorts/lw3fGWwQH2Q
In terms of next steps for the Company's flagship Tolita Gold-Copper-Moly-Silver Asset in the
Vicuña District of Chile, Gold Hart has already - over the weekend - launched the next diamond
drill hole. In addition the ongoing diamond drill campaign, Gold Hart anticipates launch of RC
drilling at its high-grade trench - with up to 52g/t gold equivalent including 3.99% copper on
surface - by the first week of March. The objective of the RC campaign is to demonstrate
higher grade pockets close to surface, beyond the larger porphyry target.
Portfolio of Assets in Vicuna and Domeyko
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_portfolio_of_assets_in_vicuna_and_domeyko_-_1.jpg
Drill Hole Completion and High Grade Nessa
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_drill_hole_completion_and_high_grade_nessa_2.jpg
Nessa Copper-Gold-Silver Complex - Domeyko Fault System- High Grade Copper Up To 4.7%
Gold Hart is also pleased to announce that the Company has received the re-analyzed lab assays
from the geochemical survey at its Nessa Complex just west of Kinross' La Coipa Gold Mine. In
total, 13 samples were re-analyzed, with 12 returning higher grades than prior announced.
Specifically, 7 samples graded 1.25% to 4.73% copper, including 4 samples exceeding 2.40%
copper.
Gold Hart is now planning a comprehensive geochemical survey at the Nessa Complex, with a
target of 500-1,000 geochemical samples gridding the property. Gold Hart hopes to launch this
next survey in the coming two weeks, and will provide an update as soon as practicable.
Nessa Gold Copper Complex Expansion 3.3X
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_nessa_gold_copper_complex_expansion_3_3x_-_3.jpg
Tolita High Grade Gold Copper Trench on Large IP Anomaly
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_tolita_high_grade_gold_copper_trench_on_large_ip_anomaly_-_4.jpg
Additional RC Drill Rig at Tolita to Target High Grade Trench Up to 52g/t Gold Equivalent with
3.99% Copper
In addition to Gold Hart's primary diamond drilling at Tolita, the Company is planning to add a
reverse circulation (RC) drill rig in order to target certain higher grade opportunities closer to
surface at Tolita. Specifically, Gold Hart intends to target its highest grade trench, which grades
8.61g/t gold equivalent over 10m, including 2m at 10.40g/t gold, 20g/t silver, and 2.88% copper,
and including grabs of 45.75g/t gold, 28g/t silver, and 3.99% copper (approximately 52g/t gold
equivalent).
Gold Hart recently opened up this high-grade trench with a bulldozer and exposed visible green
and turquoise staining typical of copper minerals malachite and chrysocolla. Interestingly, the
larger geophysical anomaly at Tolita appears to reach surface at or near this high-grade trench.
Gold Hart Vice President Rodrigo Díaz Tillería (P.Geo) commented, "Our focus remains the large-
scale porphyry potential of Tolita. But Tolita also offers the rare opportunity to target and
hopefully prove a high-grade shallower component of the asset. In the Vicuña District where 1g/t
gold on surface is rare, we have 52g/t gold and simply put we need to test it. RC drilling is
significantly faster and cheaper, does not require water to operate, and is well suited to the
characteristics of this target. Our current geological model assumes that this high-grade trench at
Tolita may only be a fraction of the size of the larger system, but we do believe it hosts potential
for generating higher grade intercepts close to surface and therefore potential to add high grade
ounces, thereby demonstrating another facet to the Tolita asset." HART anticipates launching its
RC drill campaign at this trench by early March.
Nessa Expansion - Copper Chunks
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_copper_chunks_-_5.jpg
Nessa Expansion - Historic Mines
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_historic_mines_-_6.jpg
About Gold Hart Copper's Nessa Gold-Copper-Silver Assets
Gold Hart's Nessa properties sit on the renowned Domeyko Fault of Chile, most famous for
hosting the Escondida Copper Mine - now the largest copper mine in the world - which was first
staked by Gold Hart co-founder Dr. Jose Frutos in the 1970s. Dr. Frutos recognized and personally
staked some of the Nessa claims nearly two decades ago, due to the unique surface alteration -
visible from satellite imagery - with high grades on surface and several historic mines which
exploited gold, copper and silver at or near surface via pits and shallow tunnels. The historic
mines coincide with a pervasive yet intense hydrothermal alteration (silicic-argillic to quartz-
sericitic with abundant kaolin in the central part) with a halo of propilitic alteration in the
periphery, with disseminated gold-copper-silver mineralization throughout.
Gold Hart recently expanded the Nessa property by 330% (3.3X) from an initial property size of
4,100Ha up to a current land position of 13,500Ha (135km). The Nessa Complex is just south of
the massive Codelco El Salvador - Portrerillos copper mining and smelting complex, one of the
oldest copper smelting facilities in the country. Nessa is also surrounded by major miners
Newmont, Solaris, JX Nippon, and Anglo American, and sits just northwest of Rio2's Fenix gold
deposit and just west of Kinross' La Coipa gold mine.
The Nessa properties were known to host 13 historic artisanal high-grade gold & copper pits,
which were mined using mules due to lack of access. Additionally, historic geochemical surveys
discovered high grades on surface for gold, copper, and silver, with samples up to 25g/t gold,
3.25% copper, 958g/t silver. However, the Company has now discovered additional copper
showings on surface and historic mining pits, and now believes there may be other unknown
targets on these assets. Gold Hart recently completed a follow-on geochemical survey and
obtained additional high grade samples, including up to 9.7g/t gold, 968g/t silver, and 4.7%
copper on surface.
Please refer to the notes regarding quality assurance and quality control measures applied during
the execution of the work being reported on, at the end of this disclosure. Please visit the Gold
Hart Copper YouTube channel for footage of the road construction and copper oxides at Nessa:
https://www.youtube.com/shorts/Ax6fOStX72c
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Nessa - High Grades Copper Gold Surface
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_high_grades_copper_gold_surface_-_7.jpg
Nessa Expansion - High Grades on Surface
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_high_grades_on_surface_-_8.jpg
Tolita - Flagship Gold Copper Moly Silver Porphyry Target in Vicuña District - Diamond Drilling
Program
Gold Hart geologists - including senior geologists Professor Dr. Jose Frutos, Enrique Viteri,
Jonathan Warner, and Rodrigo Diaz Tillería - carefully designed a 10-hole drill plan in order to
optimally test Tolita as a potential gold-copper-molybdenum-silver porphyry target. As prior
announced, Gold Hart first attempted to drill target #1 known as DDHTOL01 in March of 2025, but
after difficulties were encountered under tight time constraints, the team instead elected to drill
DDHTOL02 and DDHTOL05. These holes were approximately 600m each and encountered
approximately 360m and 230m of gold, copper, and moly porphyry mineralization, respectively.
Most recently, Gold Hart returned to target #1 DDHTOL01 with a more powerful drill rig and
completed a 1.053km drill hole.
Consequently, there await at least another seven highly attractive diamond drill targets identified
across the asset area. These targets are supported by a combination of geophysical
characteristics, including chargeability and conductivity, strong geological and structural controls
as well as coincident geochemical anomalies.
Tolita is a very large target, with an original 2.5km geophysical anomaly recently expanded by
76% to 4.5km.The Tolita gold soil sample geochemical surface halo (an approximation of gold on
surface above 0.1g/t) alone is nearly 28Ha and the Tolita property is 3,476Ha equal to
approximately 34.8km.
Furthermore, as recently confirmed in a follow-up geophysical survey, the Tolita geophysical
anomaly expands in both size and intensity at depth, which could translate into an enlarging
system at depth. Per the third party geophysicist who conducted the survey, ""The vertical extent
of the steeply dipping conductor that is likely related to a fault is better defined on the two new
deep lines (2600N and 452200E). This surprised me, as I had expected resolution similar to the
first lines. This would indicate to me, that the probable structure extends very deeply and has a
strong contrast in resistivity with the host rock. Because it is conductive, it should act as good
conduit for hydrothermal water flow, which should be good news for mineralization. There is
confirmation that the alteration system extends to greater depth and may increase in intensity at
depth as it is more conductive. Hopefully, the copper and gold grades would increase
correspondingly as well."
Porphyry systems in Chile, and in the Vicuña District specifically, can prove larger and richer as
they progress deeper. For example, in Chile, Atex Resources announced one of their most
significant drill holes ever (ATXD25C) which graded 2.72% copper equivalent, beginning at
1,558m and ending at a depth of 1,722m. In the Vicuña District, NGEX published "DPDH028, the
best hole drilled to date as Lunahuasi, which was drilled deeper and to the west of all previous
holes", which included multiple highly compelling intercept including the deepest 53.5m (1,219.5m
- 1,273.0m) grading 7.79% copper equivalent. In summary, the Company remains extremely
optimistic about this drill hole DDHTOL01, in addition to the future diamond drill targets as well.
About Gold Hart Copper's Tolita Gold-Copper-Molybdenum-Silver Target
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