Gold Hart Copper and Rhyolite Resources Enter into Definitive Arrangement Agreement; Gold Hart Completes Diamond Drill Hole at Tolita Gold-Copper Moly-Silver Asset in Vicuna District of Chile RC Drill Campaign to Launch at Tolita in Coming Days; Gold Hart
Gold Hart Copper and Rhyolite
Resources Enter into Definitive
Arrangement Agreement; Gold
Hart Completes Diamond Drill
Hole at Tolita Gold-Copper
Moly-Silver Asset in Vicuna
District of Chile
RC Drill Campaign to Launch at Tolita in Coming Days; Gold Hart
Copper Also Announces First Comprehensive Geochemical Surveys at
Nessa Complex Known to Host 13 Historic High-Grade Artisanal Gold
& Copper Mining Pits;
April 07, 2026 7:36 AM EDT I Source: Gold Hart Copper Corp.
Toronto, Ontario--(Newsfile Corp. - April 7, 2026) - Gold Hart Copper Corp. (TSXV: HART) ("Gold
Hart" or "HART") and Rhyolite Resources Limited (TSXV: RYE) ("Rhyolite" or "RYE") are pleased
to announce that they have entered into a definitive arrangement agreement (the "Arrangement
Agreement"), pursuant to which, among other things, Gold Hart will acquire 100% of the issued
and outstanding common shares of Rhyolite, and the Rhyolite shareholders will receive one Gold
Hart common share for every 2.6 Rhyolite common shares (the "Consideration") held (the
"Proposed Transaction"). The signing of the Arrangement Agreement follows the completion of
an oversubscribed, concurrent $18,613,613.72 Gold Hart financing announced on March 16, 2026
and supersedes the binding letter agreement announced on February 17, 2026. Further details on
the Proposed Transaction may be found below.
Gold Hart is also pleased to announce completion of the latest diamond drill hole - DDHTOL04 -
at its Tolita Gold-Copper-Moly-Silver Asset in the Vicuna District of Chile. Reverse circulation
drilling is now set to commence at Tolita's high-grade trench in the coming days.
Additionally, Gold Hart Copper has launched the first comprehensive geochemical survey at
its Nessa Complex, which follows upon the success of the high grade gold and copper results
obtained in the preliminary survey announced February 23, 2026.
Gold Hart COP-P-er - TOLDDH01 - 1.051km
The TOLDDH01 hole was completed to a final depth of 1,051m. Drilling was halted when the rig
began to slow and showed signs of mechanical strain. Although the core continued to display
strong veining and remained geologically compelling, Gold Hart geologists made the strategic
decision to end the hole to preserve rig integrity and ensure sufficient time to complete an
additional hole before the end of the season. The Company cautions that drill core visuals may
not be reliable indicators of mineralization and are therefore not to be relied upon in any
meaningful way.
Core recovered from TOLDDH01 exhibits classic porphyry style mineralization over an
exceptionally encouraging 700m interval, marked by consistent, multi generation veining that
reflects a robust hydrothermal system. Quartz veining and stockworks dominates the interval and
is associated with sulfides, most commonly with argillic - phyllic alteration overprinting the
potassic zones often forming well defined halos in the veins.
Visible chalcopyrite occurs locally as fine disseminations, veinlets, and fracture coatings, with
bornite also present, as well as occasional covellite in the 300 - 500m interval. While these
copper minerals provide a clear mineralized signature, they are not present in volumes that would
necessarily indicate unusually high copper grades. Nevertheless, the sheer width of the
hypothesized mineralized interval is enormously encouraging for planning and vectoring future
drill holes. This zonation provides an important vector for refining our geological model and
guiding the placement of the next drill hole.
Overall, the continuity of veining, consistent alteration, and presence of copper bearing sulfides
throughout paint a highly positive picture of the system's scale and potential, adding meaningful
confidence as we advance the exploration program.
Gold Hart Copper - i0LDDH□1 - 300--400m
Drll ,on I oc, � "'"· • IJ hldH m " Ill on
nw. bcJrnl .. n11d C.,,,. llltl n11 cu.-. w, py •· Promln 111 r;,yr •
Y n "'111119 l.fm11-19h h01! roe !lllplil�lng 111:�!loo w 111 •hP f' 'l"lPI bo1md 11rla1<,
Gold Hart Copper - DDHTOL01 - 1
To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/10786/291439_gold_harLcopper _ -_ddhtol01_-_1.jpg
Gold Hart Copper- TOLDDHD1 - 400-SOOm
Mul'O-pl111 D QOII 11toc:kwC11k Y lr,1119 (Y',I IJJ' n lid by promln•MI b•naci-kl-brn,cc:1111� vein g. l'I IA!rnl (!lap ,ya
a deolt tl!.ll!lural lra.,,.lllan from c1>0h• b•nd 11 lnlo veln-.bnic:el SllUill se,ocl1 al\• 11011 !Laios and p 1c:h:;
=..-pnntmg. S11lp di, mlm,r., ;rtJon oc:cue , .. !lna-gn>lm,d d�iilmlnat<>d and v lnlal.l,as1ad pyrlli,,ch,;ilcopyrJlo
Gold Hart Copper - DDHTOL01 - 2
To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/10786/291439_gold_harLcopper _ -_ddhtol01_-_2.jpg
Gold Hart Copper-TOLDDH□1 - 500-SOOm
BOll241-lO:ll !51)11.l5,U..U5ffl l!lllll lll • 2141 !,l;U5 • 5'43:!i.5 111
�- 1;• . .' lL I\
''J"l f hr::, 1
11011. u-, .. lllf sn:n . s:rus ..
Gold Hart Copper - DDHTOL01 - 3
To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/10786/291439_gold_harLcopper _ -_ddhtol01_ -_3.jpg
Gold Hart Copper- TOLDDHD1 - 600-700m
V i la ffl■ln i:.o11a.lal•nt. � II llCl'M& varloin lllholog C.I 11111-. IIC lld '111 C-Ollfi r 111A11.lv ■nd bre 'I
Gold Hart Copper - DDHTOL01 - 4
To view an enhanced version of this graphic, please visit:
https:/ /images.newsfilecorp.com/files/10786/291439_gold_harLcopper _ -_ddhtol01_ -_4.jpg
Gold Hart Coppa r - TOLDDH□ 1 - 700-'BOOm
IIO!II f1' • lltlli 'l'J&M • 'll.&S'"
'H;• . .' I!. I\
;1ri 1: ho ,1
JQ:(»1,-lli!III 1.ul-111.45"'
Gold Hart Copper - DDHTOL01 - 5
To view an enhanced version of this graphic, please visit:
https:/ /images.newsfilecorp.com/files/10786/291439_gold_hart_copper _ -_ddhtol01_ -_5.jpg
Gold Hart Copper-TOLDDHD1 - B00-900m
Gold Hart Copper - DDHTOL01 - 6
To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/10786/291439_gold_harLcopper _ -_ddhtol01_ -_6.jpg
Gold Hart Copper-TOLDDH□1 -900-1,00Dm tfH;• .! l! I\ , , ''J''t r I C I
Gold Hart Copper - DDHTOL01 - 7
To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/10786/291439_gold_harLcopper _ -_ddhtol01_ -_7.jpg
Gold Hart COP-P-er - TOLDDH04 - 551m
The TOLDDH04 hole was completed to a final depth of 551m. The hole was terminated for several
reasons, primarily due to geological signals associated with the conductive structure being
weaker than expected and not showing a significant change with depth. In addition, the hole
began to deviate early in its inclinations, changing its dip from the planned 60° to approximately
48° by the end. While such deviations are not uncommon, this deviation increased the mechanical
stress on the rig and progressively moved the hole away from the original target. Further
deepening of the hole was anticipated to become technically challenging, with slower advance
rates while simultaneously moving farther from the zones of interest given the drilling azimuth.
Nonetheless, a total depth of more than 500m still represents a relatively deep hole and provides
valuable geological information for the projects geological models.
Gold Hart Coppa r - TOLDD H□4 - 200-300m
Tha 11ml r«k Is 1"1>l111rv111ly cqno.lt.LGnl. T)'plo,; ly bfallt dlont,i 1H val"" DI va,yl"11 Into fill I)'
11cc:omp nl!Ml II)' II rJI n I, ios 1111d lffllG 1111! fVi! WI m�• l'nl Ill m119n IJ Ihm \I ]ms,
Gold Hart Copper - DDHTOL04 - 1
To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/10786/291439_gold_harLcopper _ -_ddhtol04_ -_1.jpg
Gold Hart Coppa r - TOLDDH□4 - 300-400m � f�• ·- [I, \
'.'1J"l l h I; ,�
190.� IA!i - I�(),! AUii - WM m
Ti'la 11ml rt)clt Is r'l>1111rv,oly cori1,it.t.anJ. T)'plcn: ly blollt dl,;,rit,i 'W valnll DI va,yl"11 Int fD.11)'
11cc:omp nllMi by II r11 n i, los .11nd !fflla 11111 rvn w lh m�• l'nl mml m119n I u,m " ln•.
Gold Hart Copper - DDHTOL04 - 2
To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/10786/291439_gold_harLcopper _ -_ddhtol04_ -_2.jpg
FlagshiP- Gold COP-P-er MolY. Silver PorP-hY.IY. Target in Vicuna District
On February 23, 2026, Gold Hart announced completion of the drill hole DDHTOL01, which
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
You Tube at https://www.youtube.com/shorts/lw3fGWwQH2Q.
Gold Hart has now completed a follow-on diamond drill hole - DDHTOL04 - which reached
551m.
In addition to the ongoing diamond drill campaign, Gold Hart anticipates the imminent launch
of RC drilling at its high-grade trench - with up to 52g/t gold equivalent including 3.99%
copper on surface. The objective of the RC campaign is to demonstrate higher grade pockets
close to surface, beyond the larger porphyry target. Gold Hart anticipates commencement of
this RC drill campaign in the coming days.
Nessa COP-P-er-Gold-Silver ComP-lex - ComP-rehensive Geochemical Survev. Follows Prior
Preliminarv. Survev.'s High Grade Results (COP-P-er UP- To 4.7% & Gold UP- To 9.7gl1l
Gold Hart is also pleased to announce that the Company has just launched its first comprehensive
geochemical survey at its Nessa Complex just west of Kinross' La Coipa Gold Mine. Gold Hart has
a team of 8 geologists and assistants leading this survey. This comprehensive geochemical
survey is targeting 500-1,000 samples, primarily within the Ringo claims of the Nessa Complex.
This survey follows upon the success of the preliminary geochemical survey, with several
returning high grades of gold and copper. Specifically, 7 samples graded 1.25% to 4.73%
copper, including 4 samples exceeding 2.40% copper. 12 Samples graded above 1g/t gold, with
6 samples grading between 4.10g/t to 9.74g/t gold.
Gold Hart Copper - Nessa Complex - Geochemical Survey Team - 1
To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/10786/291439_gold_harLcopper _ -_nessa_complex_ -
_geochemicaLsurvey_team_ -_1.jpg
Gold Hart Copper - Nessa Complex - New Survey - 2
To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/10786/291439_gold_harLcopper _ -_nessa_complex_ -
_new_survey_ -_2.jpg