CopperCorp Intersects High-Grade Cu-Au Mineralization at Jukes Prospect

2025-12-18

Vancouver, British Columbia--(Newsfile Corp. - December 18, 2025) - CopperCorp Resources Inc. (TSXV: CPER) (OTCQB: CPCPF) ("CopperCorp" or the "Company") is pleased to announce first assay results from its Phase 2 drilling1,2 campaign at the Jukes Cu-Au prospect in western Tasmania, Australia.

Example of core showing high-grade chalcopyrite-pyrite-chalcocite mineralization, JDD004, 93.0m (1.0m @ 6.95% Cu, 0.53g/t Au, 23.4g/t Ag (7.48% CuEq) from 92.6m).

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Highlights

Initial Phase 2 drilling results confirm the northern extension of high-grade Cu-Au-Ag mineralization at Jukes, with new drillholes intersecting mineralization approximately 300 m along strike from CopperCorp's previous drilling. Key drill intercepts include:

JDD003:9.0m @ 0.81% Cu, 0.21g/t Au, 6.2g/t Ag (1.0% CuEq) from 167.0m, including

2.0m @ 2.0% Cu, 0.56g/t Au, 15.8g/t Ag (2.5% CuEq) from 169

JDD004:5.2m @ 1.32% Cu, 0.12g/t Au, 7.42g/t Ag (1.46% CuEq) from 70.0m, including3.4m @ 1.75% Cu, 0.17g/t Au, 9.33g/t Ag (1.93% CuEq) from 71.8m

1.0m @ 6.95% Cu, 0.53g/t Au, 23.4g/t Ag (7.48% CuEq) from 92.6m

12.6m @ 0.78% Cu, 0.15g/t Au, 3.43g/t Ag (0.91% CuEq) from 109.9m, including:1.1m @ 2.05% Cu, 0.72g/t Au, 9.55g/t Ag (2.62% CuEq) from 109.9m; and

1.0m @ 5.75% Cu, 0.52g/t Au, 17.25g/t Ag (6.23% CuEq) from 121.5

10.0m @ 0.73% Cu, 0.43g/t Au, 4.11g/t Ag (1.06% CuEq) from 204m, including:1.0m @ 2.5% Cu, 0.56g/t Au, 9.64g/t Ag (2.96% CuEq) from 206.0m

2.0m @ 1.39% Cu, 1.11g/t Au, 10.07g/t Ag (2.24% CuEq) from 212.0m

High-grade Cu-Au-Ag mineralization is also confirmed at surface, with channel sampling returning:5.0m @ 3.62% Cu, 0.62g/t Au, 32.6g/t Ag (4.28% CuEq), including1.0m @ 7.5% Cu, 2.18g/t Au, 46.7g/t Ag (9.35% CuEq)

Mineralization remains open in all directions, with further strike and depth extensions supported by strong IP chargeability corridors and anomalous surface geochemistry.

Stephen Swatton, President and CEO of CopperCorp, commented

"I am extremely encouraged with the progress at Jukes; these latest results continue to improve our understanding of the style and scale of mineralization. Importantly, drilling has now confirmed that high-grade Cu-Au-Ag mineralization occurs repeatedly over significant strike lengths and to significant depths, consistent with our evolving interpretation of a structurally controlled system, with steeply oriented high-grade shoots and veins developed in a broader mineralized enveloped. This style of mineralization shares important characteristics with the nearby 3 million tonne Cu / 3 million ounce Mt Lyell copper-gold mining camp which hosts 22 distinct orebodies, most of which are oriented in vertical pipe-like structures.

Drilling at Jukes remains widely spaced, with only a small portion of the extensive target area tested to date. The repetition of high-grade mineralization within this limited drill density is particularly encouraging and highlights the potential for additional high-grade zones to be identified with ongoing systematic drilling.

As results continue to come in from Jukes, we will continue to refine our understanding of the system and assess optimal drill spacing to work towards the design of a NI 43-101-compliant mineral resource. The discovery of a high-grade, mid-sized copper-gold deposit at this location would be welcomed by both the local mining community and the Tasmanian government which has indicated a strong desire to see mining revenues continue to underpin the State's economy."

Jukes Phase 2 Drilling Update

Initial assays have been received for the first 2 holes (JDD003 and JDD004) of the Jukes Phase 2 diamond drilling program. Significant intercepts are shown in Table 1, see also Figures 3 and 4. The objective of the Phase 2 drill program is to test extensions of mineralization intersected in CopperCorp's 2024 Phase 1 drilling3,4.

As of reporting, the Company has now completed 4 diamond drill holes at Jukes that have tested approximately 300m of strike and to depths over 500m from surface. All holes completed by CopperCorp at Jukes so far have successfully intersected zones of high-grade copper-gold-silver mineralization.

Drilling remains in progress on holes JDD005 and JDD006 with two rigs currently onsite.

Full results have been received for hole JDD003 while only partial (0-240m) results are available for hole JDD004.

JDD003

JDD003 was drilled to test for mineralization associated with the western IP chargeability zone below the historical King Jukes No.1 mine adit and 300m north along strike from Phase 1 hole JDD002W13. JDD003 successfully intercepted disseminated, vein and stringer chalcopyrite-pyrite mineralization from 150m down hole with the mineralization then faulted out at 177.2m. Mineralized intercepts are listed in Table 1.

JDD004

JDD004 was drilled to test for strike extensions of structurally controlled mineralization observed outcropping along the Mt Jukes paved road. Results for channel sampling of the outcropping mineralization by CopperCorp are summarized below (Table 2). JDD004 successfully intercepted multiple zones of structurally controlled high-grade copper-gold-silver mineralization (see significant mineralized intercepts in Table 1). Copper mineralization in JDD004 comprises stringer-vein to breccia-fill and semi-massive style chalcopyrite-pyrite-magnetite, with bornite, cuprite and malachite also noted in some zones.

Hole NumberFrom (m)To (m)Interval (m)Cu (%)Au (g/t)Ag (g/t)CuEq* (%)

JDD003150177.227.20.340.142.60.46

Including1661759.00.810.216.21.00

Including1691712.02.00.5615.82.50

JDD0047075.25.21.320.127.421.46

including71.875.23.41.750.179.3319.3

JDD0049213038.00.520.12.530.61

Including92.693.61.06.950.5323.47.48

and109.9122.512.60.750.153.430.88

Including109.91111.12.050.729.552.62

and121.5122.51.05.750.5217.256.23

JDD00420022525.00.350.211.920.51

Including20421410.00.730.434.111.06

Including2062071.02.50.569.642.96

and2122142.01.391.1110.072.24

Table 1: Jukes prospect significant drillhole mineralized intercepts for CopperCorp Phase 2 drilling (new results - this announcement). Reported grades are calculated as down-hole length weighted averages. Intercepts are downhole intervals.

Jukes Road Outcrop Channel Sampling Results

Anomalous assay results have also been returned for surface outcrop channel sampling at Jukes following completion of a 362m-long continuous channel sample taken from exposed outcrop along the Jukes access road. Significant mineralized intervals are listed in Table 2, see also Figures 3 and 4.

Channel NumberFrom (m)To (m)Interval (m)Cu (%)Au (g/t)Ag (g/t)CuEq* (%)

MJCS001182350.32.872.532.33

including181910.9311.157.468.81

MJCS001344060.580.116.090.70

including353721.220.1413.051.41

MJCS001169.7177.780.21.161.791.03

MJCS001219.7221.720.840.057.90.93

MJCS001230.5231.553.620.6232.624.28

Including 234.5235.5 17.52.1846.79.35

MJCS001252277.7260.30.031.020.33

Including25626150.780.010.720.79

Table 2. Jukes prospect significant mineralized intercepts for CopperCorp outcrop channel sampling (new results - this announcement). Reported grades are calculated as along-channel length weighted averages. Intercepts are along-channel intervals.

Jukes Prospect Overview

The Jukes prospect is located approximately 10 km south of the Sibanye-Stillwater owned Mt Lyell copper-gold mining camp (historical production of ~3 Mt contained copper and ~3 Moz contained gold). Jukes is interpreted to host a large, structurally controlled hydrothermal Cu-Au-Ag system with hybrid porphyry-IOCG style mineralization developed within the same volcanic host rock package and in a similar structural setting to the Mt Lyell system.

The prospect is characterized by strong, coincident IP chargeability, magnetic, and geochemical anomalies that define a prospective footprint of at least 700 m in strike length (open) and approximately 400 m in width. Drilling to date has confirmed Cu-Au-Ag mineralization over a drilled strike length of at least 300 m and from near surface to depths exceeding 500 m vertically. Importantly, mineralization remains open in all directions, drilling remains widely spaced, and large portions of the interpreted geophysical footprint remain untested.

Prior to the Phase 2 drilling campaign, exploration drilling - including CopperCorp's successful 2024 Phase 1 program - had tested only the southern margin of this extensive target area. Drilling intersected multiple zones of Cu-Au-Ag mineralization, including broad mineralized envelopes containing discrete high-grade structural intervals (see Tables 3, 4, 5 and 6). These results provided strong validation of the exploration model and formed the basis for the expanded Phase 2 program now underway. Significant mineralized intercepts from previous drilling3,4 at Jukes includes:

JDD001:

9.0m @ 0.81% Cu, 0.76g/t Au, 1.6g/t Ag (1.35% CuEq) from 85.0m, including3.0m @ 1.4% Cu, 0.96g/t Au, 2.38g/t Ag (2.09% CuEq) from 85.0m

10.1m @ 0.94% Cu, 0.69g/t Au, 4.27g/t Ag (1.45% CuEq) from 128.5m, including3.1m @ 2.17% Cu, 2.1g/t Au, 9.25g/t Ag (3.71% CuEq) from 135.5m

10.0m @ 0.67% Cu, 0.29g/t Au, 4.43g/t Ag (0.90% CuEq) from 194.0m, including2.0m @ 1.31% Cu, 1.08g/t Au, 8.13g/t Ag (2.12% CuEq) from 202.0m

JDD002W1:

20.0m @ 0.76% Cu, 0.17g/t Au, 3.32g/t Ag (0.90% CuEq) from 498.0m, including1.0m @ 3.68% Cu, 0.35g/t Au, 19.35g/t Ag (4.06% CuEq) from 502.0m

19.0m @ 0.86% Cu, 0.48g/t Au, 5.58g/t Ag (1.24% CuEq) from 529.0m, including2.05m @ 4.2% Cu, 1.66g/t Au, 29.16g/t Ag (5.57% CuEq) from 545.4m

JP2:

13.4m @ 1.6% Cu, 1.6g/t Au, 5.3g/t Ag (2.76% CuEq) from 61.6m

Channel sampling of historical underground mine workings5 has also previously yielded high-grade intercepts including (see Tables 7 and 8):

Jukes No.3 Main Adit:

31.0m @ 1.48% Cu, 0.83g/t Au, 5.21g/t Ag (2.10% CuEq), including9.0m @ 2.92% Cu, 1.79g/t Au, 10.17g/t Ag (4.25% CuEq)

Jukes No.3 West Crosscut:

11.0m @ 1.28% Cu, 0.73g/t Au, 3.94g/t Ag (1.82% CuEq), including4.0m @ 1.84% Cu, 1.26g/t Au, 6.39g/t Ag (2.77% CuEq)

Jukes No.1 Main Adit:

9.0m @ 1.84% Cu, 0.80g/t Au, 3.3g/t Ag (2.42% CuEq)

Jukes No.2 Main:

12.0m @ 0.63% Cu, 0.30g/t Au, 0.60g/t Ag (0.84% CuEq), including2.0m @ 2.4% Cu, 1.7g/t Au, 35g/t Ag (3.84% CuEq)

6.0m @ 0.58% Cu, 1.6g/t Au, 7.3g/t Ag (1.75% CuEq), including2.0m @ 1.0% Cu, 3.4g/t Au, 12g/t Ag (3.47% CuEq)

Jukes No.2 SE Crosscut:

20.0m @ 0.98% Cu, 0.43g/t Au, 8.7g/t Ag (1.34% CuEq), including4.0m @ 3.60% Cu, 1.65g/t Au, 33.5g/t Ag (4.99% CuEq)

King Jukes No.1 Main Adit:

18.0m @ 1.34% Cu, 1.09g/t Au, 11.4g/t Ag (2.18% CuEq)

Exploration Significance of High-Grade Structural Mineralization

Drilling and sampling completed to date at the Jukes prospect consistently demonstrates that the system is mineralized and capable of generating high-grade copper-gold-silver mineralization. Every drillhole completed by CopperCorp at Jukes to date has intersected Cu-Au-Ag mineralization, a highly encouraging outcome given the very limited amount of drilling completed across a large target area.

The combined drilling and channel sampling results indicate that favourable structural conditions capable of focusing higher-grade mineralization are developed at multiple positions within the broader Jukes system. In all holes drilled to date, higher-grade mineralization occurs within discrete, structurally controlled zones over-printing broader envelopes of alteration and disseminated sulphides - a pattern typical of large hydrothermal Cu-Au systems where structures act as conduits for mineralizing fluids.

High-grade structurally-controlled mineralization has now been intersected over several hundred meters of strike length and is closely associated with strong IP chargeability anomalies. This spatial relationship provides confidence that the extensive IP-defined corridors at Jukes are directly linked to mineralization and represent high-priority targets for ongoing drilling. The potential repetition of high-grade zones over this distance significantly upgrades the exploration potential of the Jukes system at this early stage.

Next Steps

Phase 2 drilling at the Jukes prospect will continue into 2026, with ongoing work focused on systematically testing the extensive IP-defined chargeability corridors now interpreted across the prospect. Drilling will prioritize step-outs along strike and at depth from existing mineralized intercepts, as well as structural intersections and chargeability highs considered prospective for the development of additional high-grade mineralized zones.

With only four drillholes completed by CopperCorp to date across a large and well-defined geophysical footprint, the majority of the Jukes system remains untested. Results from ongoing drilling will be used to further refine geological and structural targeting as the Company continues to evaluate the scale and continuity of mineralization at the prospect.

In parallel, exploration activities are also advancing at the Hydes and Linda target areas, and the Company looks forward to providing further updates as work progresses.

Jukes Prospect Drill Hole Location Data (CopperCorp Phase 1 and Phase 2 Drilling)

Drillhole IDEasting GDA94Northing GDA94Elevation mRLLength (m)DipAzimuthNotes

JDD0013836705331179622214.0-50258Phase 1

JDD0023836705331179622310.0-75254Phase 1

JDD002W13836705331179622530.0-75254Wedge hole off JDD002 at 67.5m downhole

JDD0033834915331426562254.9-70280Phase 2

JDD0043834845331422562356.0-50119Phase 2

JDD0053833795331441545450.0*-6545Phase 2 *In-Progress

JDD0063834845331422562205.0*-5082Phase 2 *In-Progress

Table 3. Jukes prospect CopperCorp Phase 1 (2024) and Phase 2 (2025) drill hole location and summary data.

Jukes Prospect Significant Drill Hole Cu-Au Mineralized Intervals (CopperCorp Phase 1 Drilling)

Hole NumberFrom (m)To (m)Interval (m)Cu (%)Au (g/t)Ag (g/t)CuEq* (%)

JDD001722041320.350.191.50.49

including7297250.750.41.621.04

including859490.810.761.61.35

and128.5138.610.10.940.694.271.45

including135.5138.63.12.172.19.253.71

and194204100.670.294.430.90

JDD002122.213714.80.180.010.930.19

JDD002W1498548500.660.273.570.87

including498518200.760.173.320.90

and529548190.860.485.581.24

including545.4547.452.054.21.6629.165.57

JDD002W1121140190.110.020.490.13

JDD002W121422060.170.060.480.22

JDD002W1400424240.170.081.10.23

JDD002W146346850.350.085.640.45

JDD002W148949230.340.091.670.41

Table 4: Jukes prospect significant drillhole mineralized intercepts for CopperCorp Phase 1 drilling (previously reported3,4 but without CuEq calculations). Reported grades are calculated as down-hole length weighted averages. Intercepts are downhole intervals.

Jukes Prospect Historical Drill Hole Location Data

Drillhole IDEasting GDA94Northing GDA94Elevation mRLLength (m)DipAzimuthNotes

Z1420033837305331123.5620224.5-603121974 - BHP

JP13837205331230605141.5-722921982 - Mt Lyell MRC

JP23836315331105660158.3-49.52961982 - Mt Lyell MRC

JP33836285330962700351-573041984 - RGC

JP43837075331036650225.5-503061987 - RGC

Table 5. Jukes prospect historical drill hole location and summary data.

Jukes Prospect Significant Drill Hole Cu-Au Mineralized Intervals (Historical Drilling)

Drillhole IDFrom (m)To (m)Interval (m)*Cu (%)Au (g/t)Ag (g/t)CuEq (%)

JP110010440.410.00510.42

JP261.67513.41.61.65.32.76

JP2140158.318.3 (to EOH)0.18NANANA

JP3214234200.520.0620.58

including215228130.670.082.380.74

JP325225312.450.01102.53

JP326626812.330.00532.35

JP3273305320.280.0610.33

JP4191.5216.5250.280.060.70.33

Z142003139.2145.260.590.0052.70.61

Table 6. Jukes prospect significant drillhole mineralized intercepts historical drilling (previously reported but without CuEq calculations). Reported grades are calculated as down-hole length weighted averages. Intercepts are downhole intervals.

Jukes Prospect Underground Workings Channel Sampling Mineralized Intervals (CopperCorp Sampling)

Mineralized Zone / SectionFrom (m)To (m)Interval (m)Cu (%)Au (g/t)Ag (g/t)CuEq* (%)

Jukes No. 3 Main Adit851431.10.623.981.56

Including839311.480.835.212.10

including81792.921.7910.174.25

Jukes No. 3 West Crosscut213111.280.733.941.82

including91341.841.266.392.77

Jukes No. 3 Hanging wall Drive (unmineralized hanging wall side)172030.50.523.030.89

Jukes No. 3 Main Adit7298260.650.672.61.14

Table 7. Significant mineralized intervals, channel sampling - Jukes No. 3 Adit (CopperCorp sampling - previously reported5 but without CuEq calculations). Reported grades are calculated as along-channel length weighted averages. Intercepts are along-channel intervals.

Jukes Prospect Underground Workings Channel Sampling Mineralized Intervals (Historical Sampling)

Mineralized Zone / SectionFrom (m)To (m)Interval (m)*Cu (%)Au (g/t)Ag (g/t)CuEq (%)

Jukes No. 1 Main Adit0991.840.83.32.42

Jukes No. 2 Main Adit152164120.630.30.60.84

including15816022.41.7353.84

Jukes No. 2 Main Adit17217860.581.67.31.75

including172174213.4123.47

Jukes No. 2 SE Crosscut222200.980.438.71.34

Including2643.61.6533.54.99

Jukes No.3 HW Drive (mineralized footwall side)225.423.41.391.033.52.14

King Jukes No.1 Main Adit058580.740.396.81.06

including1634181.341.0911.42.18

King Jukes No.1 E Crosscut0440.330.230.49

King Jukes No.1 W Crosscut212100.60.052.80.65

King Jukes No.2 Adit010100.120.10.40.19

Table 8. Significant mineralized intervals, channel sampling - Jukes prospect underground workings (historical sampling - previously reported5 but without CuEq calculations). Reported grades are calculated as along-channel length weighted averages. Intercepts are along-channel intervals.

*Copper Equivalent Calculations

Copper equivalent (CuEq) values used throughout this announcement have been calculated using the formula CuEq (%) = Cu(%) + Au(g/t) x 0.702 + Ag(g/t) x 0.00695, based on metal prices of US$4.20/lb copper, US$2,600/oz gold and US$30/oz silver. Metallurgical recoveries of 90% for copper, 70% for gold and 60% for silver have been assumed.

Recovery assumptions are based on historical metallurgical performance from the nearby Mt Lyell copper-gold mining operations, which exploited mineralization of similar style and broadly comparable mineralogy to that observed at the Jukes prospect. No metallurgical test work has been completed on mineralization from the Jukes prospect, and actual recoveries may differ from those assumed.

Copper equivalent values are expressed as percentages and are calculated by converting gold and silver grades to copper equivalent using the stated metal prices and recoveries and summing these with the copper grade. CuEq values are provided for exploration comparison purposes only and should not be interpreted as an estimate of economic value.

Other News

Hydes

The drilling at Hydes is incomplete with the target horizon untested due to drilling complications. The company is currently mobilizing a field crew to undertake more sampling and mapping at surface with a view to possibly continuing the drill program supported by helicopter in Q1/2 2026.

Figure 1. Southern Skyline Project properties and exploration target areas with magnetics TMI RTP image.

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Figure 2. Location of the Razorback property and the Jukes Zone target area relative to the Mt Lyell copper-gold mine. Blue outlines are CopperCorp's 100% owned licenses.

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Figure 3. Jukes prospect results summary plan with satellite view image underlay. See tables attached to this announcement for full intercept details.

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Figure 4. Oblique plan view of the Jukes prospect showing gradient array IP survey chargeability (psuedocolour image underlay) with recent pole-dipole (P-D) IP 2D chargeability model sections, with summary drill hole and adit channel sampling mineralized intercepts summary. See tables attached to this announcement for full intercept details.