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Kainantu Resources Discovers 1.55 g/t Gold, 0.39% Copper, 20.8 g/t Silver At KRL South – Confirms High Grade Results At Ontenu Prospect

Vancouver, B.C. – March 3, 2023 – Kainantu Resources Ltd. (TSX-V: KRL; FSE: 6J0) (“KRL” or the “Company”), the Asia-Pacific focussed gold mining company, is pleased to announce encouraging initial results from the Ontenu Prospect at KRL South (including consistently high grade results of up to 1.55 g/t Au, 0.39% Cu, 20.8 g/t Ag and 460ppm Mo from surface).  

The KRL South claims are located 27 km southwest of the K92 Mining (KNT:TSX) operations and are also situated on the Kainantu Transfer Structure.

Key Highlights:

  • Geochemical analysis completed from H2 2022 initial field work at the Ontenu Prospect at KRL South;
  • Consistent high grades reported from outcrop and trench exposures over a 2,300m x 900m area:
    • Gold (Au) results are remarkably consistent; with 63 sample results recorded over a narrow range of up to 1.55 g/t Au (26 samples exceeded 0.2g/t (ppm)Au, with an average of 0.45g/t (ppm) Au);
    • Copper (Cu) values of up to 0.39% (3,893ppm) with 17/63 returning >0.08% Cu;
    • Silver (Ag) values of up to 20.8 g/t, mainly associated with the highest Au values; and
    • Molybdenum (Mo) values of up to 460ppm, with 27of the 63 samples returning >10ppm Mo;
  • Two distinct groups of contiguous strongly anomalous Au (up to 0.37 g/t) results from 95 gridded soil samples at 50m spacing from 2 E-W lines 100m apart transecting the centre of KRL’s priority target area:
    • a 1,000m length averaging 101ppb Au and a 500m length averaging 114 ppb Au; and
    • Cu (up to 733ppm) and Mo (up to 310ppm) display a close correlation with Au values;
  • Rigorous analyses of historic results have expanded the previous priority target areas into 1 contiguous block of 3.8km² containing strongly anomalous Au and Cu results from surface and DDH sampling, to be redesignated as “Priority 1”;
  • Field work focussed on geophysical results demonstrating a high apparent conductivity target is interpreted as a potential mineralized (Cu-Au-Ag-Mo) porphyry complex;
  • Historic sample results of up to 15.0g/t Au, 3.17% Cu 960g/t Ag, and 170ppm Mo have been verified; and
  • Favourable geology indicative of the edges of porphyry style mineralization was mapped above and peripheral to the underlying O6 anomaly. 

Matthew Salthouse, CEO of KRL, commented:

“KRL is pleased to announce exceptional exploration sampling from the Ontenu prospect in our KRL South project; including consistently high grade results of up to 1.55 g/t Au, 0.39% Cu, 20.8 g/t Ag and 460ppm Mo from surface over a 2,300m x 900m area.

This supports our view that the Ontenu area is highly prospective area for Au, Cu and Ag mineralization.  Further work is ongoing to move the area towards a targeted drilling programme in the near term.”

Background

As previously announcement by the Company on 14th September, 2022, KRL has focused exploration activities at the Ontenu Prospect in KRL South (contained within EL2660).  This area was identified as a priority area of interest following analysis of geology, historic exploration and the Company’s MobileMT survey results (with further background set out below).  It is located along the world renowned Kainantu Transfer Structure, in a district associated with highly successful mining projects, including K92 Mining (KNT:TSX).

The Ontenu Prospect has emerged as a stand-out prospect and is ranked as a priority for the Company in the highly prospective KRL South project (with potential to accelerate a focussed drill programme at Ontenu).  Ontenu is approximately 15 kilometres east of the Tirokave area of interest (where KRL continues exploration activities) and 27 kilometres south-southwest of the K92 operations.

Geology and Geophysical Signatures at the Ontenu Prospect

A work programme was undertaken and completed in H2 2022.  Initial results have now been received and are detailed below.  Ongoing field work and analysis has identified a cluster of interpreted mineralized porphyry and intrusion related targets around Ontenu, a highly Au-Cu fertile area demonstrated by historic exploration results.  Encouraging geophysical survey results also support the potential of Ontenu for extensive bulk grade with attendant higher-grade mineralization, making this an area of heightened focus for the Company.

In relation to the Company’s geophysical survey, strongly anomalous areas were highlighted around the Ontenu Prospect.  Specifically, several discrete zones of high apparent conductivity along both NW and NE trends were apparent, as set out in Figure 1 below.  A central zone at the intersection of the most prominent NW and NE trending structures coincides with a stockwork zone in a landslide exposure returning highly anomalous Au geochemistry; historically reported by Barrick.  Further zones in both NW and NE directions appearing to be prospective and underlain by discrete magnetic highs.

Figure 1: Ontenu area conductivity model

Figure 1 also demonstrates the apparent conductivity anomalies from the MMT survey with historic data from past explorers, along with the outlines of KRL targets identified for more detailed work. Two prominent apparent conductivity anomalies (O5 and O6, the tops of both interpreted as ~200m below surface), in addition to a curvilinear conductor (O7), all occur in the vicinity of the prospects historically defined.  While not the focus of previous operators’ exploration activities, O5 is the strongest and most depth-persistent conductor in all areas surveyed by the Company and may represent a significant under-explored shallowly buried mineralization system.

The O6 anomaly partially underlies the most focussed and successful exploratory work undertaken by prior explorers and is associated with a coincident NW trending linear conductivity and magnetic anomaly (O2), which appears to represent a significant controlling structure.  Coincidentally, this is the same orientation as the high-grade Kora-Irumafimpa-Judd epithermal vein system underlaying K92’s operations.

The O1 feature in the southern part of the survey area comprises broken magnetic anomalies interpreted as an intrusive complex, or volcaniclastic sediments, likely the Yaveufa Formation.  Shallow linear asymmetric conductivity anomalies (O3 and O4) may represent sediments thickening towards significant NE trending structures.  Quartz-limonite stockwork veining hosted by Tertiary conglomerates immediately overlying a regional unconformity with basal Mesozoic metamorphics support the area around O4, termed the Onerunka anomaly.  This is a location for further field work investigation (noting artisanal miners are active here).

Field work and analysis

Work focussed on implementing a planned programme over the O6 target and surrounds that included verification of previous exploration (DDH pads and trench excavations), mapping and re-sampling selected trenches, gridded soil sampling (14 soil lines with 100m NS spacing and 50m E-W sampling interval), and 19.5km of creek traversing, mapping, and sampling, focussing on the identification of lithologies, alteration and mineralization styles, and controlling structures.  The surface projection of the O6 apparent conductivity high can be identified in Figure 2 by the pink dashed oval shape towards the bottom right of the chart area.

Intrusive lithologies, including ultramafics, microdiorite, andesite, and dacite are hosted by siltstone, likely the Omaura Formation (which is hornfelsed and occasionally skarnified).  Hydrothermal alteration mapped within the prospect affects all observed lithologies to some degree. 

Mineralization is present in all lithologies, but found to be more prevalent in the intrusives, particularly within the microdiorite and andesite, as moderately disseminated pyrite-chalcocite±bornite±covellite and occasional sheeted and stockwork quartz-sulphide veins/veinlets.  Of particular interest is one rock float sample (interpreted close to source and assaying 1.06ppm Au) exhibiting vuggy residual quartz hosting enargite mineralization, suggesting the remnants of a mineralized lithocap remaining in some areas.

The structures identified within the prospect indicate a complex regime comprising NW trending (fault breccias and faults), NE trending (faults, shear zones) and late NNW-N and NNE-E trending displacement faults.  These faults act as major controlling structures to alteration and mineralization and as openings for the emplacement of younger intermediate and mafic porphyry intrusions and associated contact brecciation.

During the mapping and sampling programme, a total of two E-W grid soil lines across the center of the Priority 1 area (Figure 2) were completed with 95 soil samples taken from the C horizon, varying from 0.8m to 2.1m depth.  Outcrop, trench, and creek traverse mapping and sampling saw a total of 63 largely mineralized rock chip samples taken.

Figure 2: Geological interpretation map of Ontenu P1Central area displaying H2 2022 Au-Cu-Mo rock geochemistry including Au soil geochemistry.

Rock Geochemistry

Gold results from fire assay, along with ICP results of 52 elements recently became available for the 63 rock chip samples taken.  The Au results of these samples taken over the Priority 1 target area (3.8km², Figure 1 above) are remarkably consistent within a narrow range up to 1.55ppm Au, with only 2 of the samples falling below the detection limit of 0.005ppm Au; of these, 26 samples above an arbitrary limit of 0.2ppm Au average 0.45ppm Au.

The highest Cu value is 3,893ppm with 17 out of the 63 samples submitted returning >800ppm Cu; The highest Mo is 460ppm with 27 samples from the 63 returning >10ppm Mo; highest Ag values, up to 20.8ppm, are mainly associated with the highest Au values.

A 1.2km² area within the middle of the Priority 1 target, designated “P1 Central”, Figure 2, encompasses the western portion of the surface projection of the O6 apparent conductivity target and exhibits moderate to strong Au-Ag-Cu-Mo anomalism throughout.  Most of these samples represent channel/continuous chip samples taken by past explorers over mainly stockwork veined exposures and/or within trenches with the multi-element tenor confirmed by KRL’s sampling programme, as set out in Figure 3 below.  The area is largely underlain by strong to extremely weathered bedrock and residual soil cover.   

Descriptions of sampling and assay procedures by prior explorers’ annual reports of Ontenu and other areas in the Kainantu District appear to follow industry standards. Based on this, together with the initial favourable comparison of the geological descriptions and geochemical results from the P1 area, lead KRL to view the prior explorers’ geochemical results as reliable for the Company’s further work.      

The top 10 rock sample results by key commodity are displayed in Figure 3 below.  The table contains results from both KRL’s H2 2022 program (samples numbers prefixed by “E”) and the prior explorer’s historic sampling programs.

Sample No.Au (g/t) Sample No.Cu (%) Sample No.Ag (g/t) Sample No.Mo (ppm)
1947915.00195093.1719479960E00031460
195864.38195031.891948116719507170
195953.18195270.92195037519534154
194882.40195140.43194885019484143
195602.15E000300.391958636E00036127
192201.91E000160.35195112719526117
195911.90194840.29194872619643114
194811.88E000490.271965824E00046112
192161.81194880.271921822E0003099
E000101.55195680.25E0004720.81947999

Figure 3: KRL and RGS Rock Sample Multi-element Result Highlights

Soil Geochemistry

Although representing a relatively limited area within P1, the results from the brief gridded soil sampling programme are considered highly encouraging.

From a total of 95 samples at 50m spacing from 2 E-W lines 100m apart transecting the center of the Priority 1 area, 2 distinct groups of contiguous strongly anomalous Au (max 369ppb) are revealed: a 1,000m length averaging 101ppb Au and a 500m length averaging 114ppb Au, Figure 2, above. Cu (max 733ppm) and Mo (max 310ppm) display a close correlation with Au values.

The distribution of multi-element anomalous soils samples indicates at an early stage an association with the altered and mineralized microdiorite exposed along the northern edge of the surface projection of the O6 conductivity target, and extending further WNW, likely influenced by the O2 structural target. Clearly, further soil sampling may increase confidence on this observation; in addition to highlighting other prospective targets in the P1 area.

Figure 4: Ontenu Priority 1 area conductivity model (interpreted by Computational Geoscience Inc) shown spatially related to the interpreted geology and KRL’s H2 2022 Au-Cu-Mo rock geochemistry map. (High resolution version available here)

Interpretation

Based on the results set out above, a preliminary interpretation incorporating observed geology with the geochemical results (and spatially relating them to the conductivity model generated by the MobileMT survey) are set out in Figure 4 above. 

The model suggests a large depth-persistent highly conductive body shallowly underlying widespread relatively consistent Au-Cu-Ag-Mo mineralization associated with a largely hydrothermally altered intrusive complex, accompanied by peripheral skarn and evidence of remnant mineralized lithocap.  KRL is of the view that the O6 anomaly represents the core of a substantial shallowly buried gold-rich porphyry copper body.

Next Steps

The high priority O6 target has been identified as a possible mineralized porphyry based on integrated geological, geochemical, and geophysical signatures discussed above. The intention is to produce zoned geochemical and alteration maps to aid in vectoring towards drill targets (with potential to move towards a focussed drill programme in the near term).

The highly promising O5 target (very similar in character to O6), along with others identified in the Ontenu area, will also undergo detailed exploration during 2023. The Company views the Ontenu area as extremely encouraging for potential economic Cu-Au-Ag-Mo mineralization at KRL South. 

KRL will regularly conduct social awareness and community engagement to support field work at Ontenu from H1 2023 onwards.

Qualified Person

The scientific and technical information disclosed in this release has been reviewed and approved by Graeme Fleming, B. App. Sc., MAIG, an independent “qualified person” as defined under National Instrument 43-101, Standards of Disclosure for Mineral Projects.

About Kainantu Resources (KRL)

Kainantu Resources (“KRL”)’ is an Asia-Pacific focussed gold mining company with three highly prospective gold-copper projects, KRL South, KRL North and the May River Project. All projects are located in premier mining regions in PNG. Both KRL North and KRL South show potential to host high-grade epithermal and porphyry mineralization, as seen elsewhere in the high-grade Kainantu Gold District. The May River project is in close proximity to the world-renowned Frieda River Copper-Gold Project, with historical drilling indicating the potential for significant copper-gold projects. KRL has a highly experienced board and management team with a proven track record of working together in the region; and an established in-country partner.  KRL recently executed an agreement to acquire the Kili Teke project in the western highlands of PNG.

Kainantu Resources

Matthew Salthouse, Chief Executive Officer (Tel: + 65 8318 8125) Callum Jones, Corporate Development Co-ordinator (Tel: + 61 450 969 697)
Email: info@krl.com.sg

Investor Relations (Jemini Capital)

Kevin Shum
Tel: +1 212 219 4670 (702)
Email: kevin@jeminicapital.com

Disclaimer and Forward-Looking Information

Neither the TSX-V nor its Regulation Services Provider (as that term is defined in the policies of the TSX-V) accepts responsibility for the adequacy or accuracy of this release.  Disclaimer and Forward-Looking Information Mineralization hosted on adjacent and/or nearby properties is not necessarily indicative of mineralization hosted on the Company’s property. The data disclosed in this release relating to drilling results is historical in nature. Neither the Company nor a qualified person has yet verified this data and therefore investors should not place undue reliance on such data, and no representation or warranty, express or implied, is made by the Company, its affiliated companies, or any other person as to its fairness, accuracy, completeness, or correctness. This release contains forward-looking statements, which relate to future events or future performance and reflect management’s current expectations and assumptions. Such forward-looking statements reflect management’s current beliefs and are based on assumptions made by and information currently available to the Company. All statements, other than statements of historical fact, are forward-looking statements or information. Forward-looking statements or information in this news release relate to, among other things: formulation of plans for drill testing; and the success related to any future exploration or development programs. These forward-looking statements and information reflect the Company’s current views with respect to future events and are necessarily based upon a number of assumptions that, while considered reasonable by the Company, are inherently subject to significant operational, business, economic and regulatory uncertainties and contingencies. These assumptions include; success of the Company’s projects; prices for gold remaining as estimated; currency exchange rates remaining as estimated; availability of funds for the Company’s projects; capital, decommissioning and reclamation estimates; prices for energy inputs, labour, materials, supplies and services (including transportation); no labour-related disruptions; no unplanned delays or interruptions in scheduled construction and production; all necessary permits, licenses and regulatory approvals are received in a timely manner; and the ability to comply with environmental, health and safety laws. The foregoing list of assumptions is not exhaustive.  The Company cautions the reader that forward-looking statements and information involve known and unknown risks, uncertainties and other factors that may cause actual results and developments to differ materially from those expressed or implied by such forward-looking statements or information contained in this news release and the Company has made assumptions and estimates based on or related to many of these factors. Such factors include, without limitation: fluctuations in gold prices; fluctuations in prices for energy inputs, labour, materials, supplies and services (including transportation); fluctuations in currency markets (such as the Canadian dollar versus the U.S. dollar); operational risks and hazards inherent with the business of mineral exploration; inadequate insurance, or inability to obtain insurance, to cover these risks and hazards; our ability to obtain all necessary permits, licenses and regulatory approvals in a timely manner; changes in laws, regulations and government practices, including environmental, export and import laws and regulations; legal restrictions relating to mineral exploration; increased competition in the mining industry for equipment and qualified personnel; the availability of additional capital; title matters and the additional risks identified in our filings with Canadian securities regulators on SEDAR in Canada (available at www.sedar.com). Although the Company has attempted to identify important factors that could cause actual results to differ materially, there may be other factors that cause results not to be as anticipated, estimated, described, or intended. Investors are cautioned against undue reliance on forward-looking statements or information. These forward-looking statements are made as of the date hereof and, except as required under applicable securities legislation, the Company does not assume any obligation to update or revise them to reflect new events or circumstances.

Drill hole ONED26-007 returns 12 m at 3.1 g/t Au, including 1 m at 18.1 g/t Au, at the new Megabe target; two rigs turning at Ontenu NE within the Osena Project, with a porphyry test being prepared at Ontenu Central; surface exploration and drill-target definition advancing at the Anga Project, adjacent to K92 Mining’s operation; reconnaissance at May River secures community consent and site access

Vancouver, British Columbia – June 16, 2026 – South Pacific Metals Corp. (TSXV: SPMC; OTCQB: SPMEF; FSE: 6J00) (“SPMC” or “South Pacific Metals” or the “Company”) is pleased to report new high-grade gold drill results from its Ontenu NE project and to provide a corporate update across its portfolio of gold-copper exploration projects in Papua New Guinea (“PNG”). Drill hole ONED26-007, the first hole testing the new Megabe target at Ontenu NE, returned 12 m at 3.1 g/t Au, including 1 m at 18.1 g/t Au. The Company has two diamond drills turning at Ontenu NE, within the Osena Project on the southwest border of K92 Mining Inc.’s Kainantu Gold Mine, while drill targeting is being finalised at the adjacent Ontenu Central prospect; surface exploration and drill targeting are underway at the Anga Project (northeast of, and adjacent to, K92); and field work is restarting at May River following a recent reconnaissance visit that secured community consent and confirmed site access.

Executive Chairman, Michael Murphy, commented:

“This is an important stretch for SPMC. Two rigs are turning at Ontenu NE, where our first hole into the new Megabe target has returned high-grade gold, a porphyry test is taking shape at Ontenu Central, and we have completed a reconnaissance visit to May River that secured community consent and site access. We built this position deliberately, and this is the stage where years of groundwork start to show up in the drill core.”

Figure 1: SPMC exploration progress and H2 2026 outlook, showing work completed across the portfolio through 2025 and anticipated activity and news flow at the Ontenu NE, Ontenu Central, Anga, Kili Teke and May River projects. Sequencing and timing are indicative only and subject to change.

OSENA PROJECT – Active Drilling

Ontenu NE is the engine of the current campaign. Two rigs are now turning, with Exploration Manager Octavio Garcia overseeing the program. The Company has drilled both the Onki target and the Jorkol vein system and is currently drilling newly identified NW-trending structures at Megabe (between Onki and Jorkol). Assays from the first Megabe hole, ONED26-007, have now been received and are reported below; holes ONED26-008 (Jorkol) and ONED26-009B (Megabe) have recently been completed and are pending assay results.

New High-Grade Gold at the Megabe Target

  • New high-grade gold zone intersected at the Megabe target, in the corridor between the Jorkol and Onki prospects at Ontenu NE.
  • 12 m @ 3.1 g/t Au and 15.4 g/t Ag from 185 m downhole, including 1 m @ 18.1 g/t Au and 84 g/t Ag.
  • Mineralisation hosted in NW-SE-striking fault breccia within metasediments — a comparable geological host and orientation to K92 Mining’s nearby Kora-Judd operations.
  • The Megabe area is located at Otitapa Creek, a notable source of alluvial gold mined by local artisanal miners.
  • Two drill rigs continue to operate at Ontenu NE; a second Megabe hole, ONED26-009, has been completed and dispatched to the laboratory for assay.

Hole ONED26-007 was the first hole into the Megabe area, which lies within a package of interlayered metasediments and porphyry rocks, proximal to the Onki Diorite contact, and is transected by Otitapa Creek. The hole intersected a recently surface-mapped NW-SE structure in the hanging wall of the main Megabe structure and returned 1 m @ 18.1 g/t Au within 12 m @ 3.1 g/t Au. Other assays within the intercept include up to 1,462 ppm copper and 84 g/t silver. Reported intervals are downhole (core) lengths; based on the interpreted orientation of the host structure relative to the drill hole, true width is estimated at approximately 30% of the downhole interval, preliminary and subject to confirmation by further drilling. Mineralisation is dominantly gold and silver associated with sulphides (mainly pyrite) within a fault breccia zone. The hole was terminated at 198.8 m.

Figure 2: Cross-section through hole ONED26-007 at the Megabe target, Ontenu NE.

Table 1 – Assay results from ONED26-007

Hole_ID

From (m)

To (m)

Intercept (m)

Gold (g/t)

Silver (g/t)

Copper (ppm)

ONED26-007

140

158

18

0.24

3

83

ONED26-007

185

197

12

3.10

15

540

INCLUDING:

      

ONED26-007

185

186

1

18.10

84

153

ONED26-007

186

187

1

0.99

4

71

ONED26-007

187

188

1

0.11

3

109

ONED26-007

188

189

1

0.04

2

93

ONED26-007

189

190

1

2.97

5

126

ONED26-007

190

191

1

1.48

14

1462

ONED26-007

191

192

1

0.69

18

1371

ONED26-007

192

193

1

1.03

14

1347

ONED26-007

193

194

1

0.17

7

830

ONED26-007

194

194.4

0.4

5.47

14

0.5

ONED26-007

194.4

195.2

0.8

4.33

15

375

ONED26-007

195.2

196

0.8

3.58

11

641

ONED26-007

196

197

1

3.18

7

104

Intervals are downhole (core) lengths. True width is estimated at approximately 30% of the downhole interval and is preliminary.

Figure 3: Regional geology and drill plan at the Ontenu Project.

The Ontenu NE Target Areas

Ontenu NE is a single project area that contains several distinct drill targets along one mineralised corridor. To date the Company has reported drilling from three of these — Jorkol, Onki and, for the first time in this release, Megabe.

Jorkol — the western target. Hosts gold-silver mineralisation in structurally controlled zones; drilling to date has returned assays up to 3.16 g/t Au (holes ONED25-001 and ONED26-001, -004 and -005).

Onki — the north-eastern target, centred on the Onki Diorite. Carries copper-gold porphyry-style and higher-grade vein mineralisation; drilling to date has returned peak assays of 9.92 g/t Au and 2.35% Cu (holes ONED26-002, -003 and -006).

Megabe — the new central target reported in this release, in the corridor between Jorkol and Onki and transected by the gold-bearing Otitapa Creek. First-hole results (ONED26-007) returned 12 m at 3.1 g/t Au, including 1 m at 18.1 g/t Au.

All three targets sit within the same NW-SE structural corridor, which the Company interprets as analogous to the setting of K92 Mining’s nearby Kora-Judd system.

Table 2 – Drill hole details

Hole ID

Target

Easting

Northing

Elev (m)

Length (m)

Azimuth

Dip

Assay Status

ONED25-001

Jorkol

365,693

9,295,361

1,771

318.8

45

-61

Received Au+Full ME

ONED26-001

Jorkol

365,745

9,295,652

1,762

400.0

235

-57

Received Au+Full ME

ONED26-002

Onki

366,382

9,296,303

1,817

348.8

290

-55

Received Au+Full ME

ONED26-003

Onki

366,254

9,296,133

1,823

401.9

290

-55

Partial Received preliminary Au-Cu-Ag

ONED26-004

Jorkol

365,667

9,295,561

1,769

171.1

347

-55

Received Au+Full ME

ONED26-005

Jorkol

365,667

9,295,561

1,760

123.0

0

-55

Received Au+Full ME

ONED26-006

Onki

366,261

9,296,122

1,851

304.0

93

-55

Received preliminary Au-Cu-Ag

ONED26-007

Megabe

366,147

9,295,620

1,824

198.8

325

-55

Received preliminary Au-Cu-Ag for part of hole.

ONED26-008

Jorkol

365,670

9,295,560

1,760

167

7

-56

Pending assay

ONED26-009

Megabe

366,160

9,295,800

1,889

371

220

-59

Pending assay

Ontenu NE Drill Program Highlights to Date

(see news release dated May 20, 2026)

  • Gold mineralisation confirmed in 7 of 8 holes at Ontenu NE. Seven holes for 2,804 m completed within the wider Osena Project area on the Kainantu Transfer Zone, the same regional structural corridor that hosts K92 Mining’s producing Kainantu gold-copper mine.
  • Onki Zone, hole ONED26-006: 92 m @ 0.34 g/t Au from 67 m, including 2 m @ 5.74 g/t Au, 1.49% Cu and 35 g/t Ag from 119 m (peak re-assay of 9.92 g/t Au and 2.35% Cu over 1 m).
  • Jorkol Zone, hole ONED26-001:5 m @ 0.77 g/t Au, 0.14% Cu and 19 g/t Ag from 203.5 m, including a 0.5 m peak sample assaying 3.16 g/t Au, 0.62% Cu and 96 g/t Ag with 602 ppm Bi — the strongest bismuth signature of the program. Elevated Bi-Te with Au is a recognised indicator of intermediate- to high-sulfidation epithermal systems.
  • Wide low-grade halos surrounding both high-grade peaks, with multi-element pathfinder signatures (As, Sb, Bi, Te) consistent with the upper levels of such a system.
  • Geological evidence of an intact, vertically zoned hydrothermal system at Onki. Probable phreatic breccia overlying an intensely silicified horizon, interpreted as a silica cap above a preserved system, implying the productive levels of the system may sit at depth, intact and as yet untested.
  • Ontenu Central advancing in parallel: a 2 km zoned alteration footprint with a classic porphyry signature and a relatively shallow (~400 m) porphyry target. Recently identified NW-trending mineralised zones overlying the northern margin of the porphyry signature continue to indicate the potential for K92 Mining Kora-Judd-style structures in the Ontenu area.
  • Two rigs now active: continued drilling at Ontenu NE, with ONED26-007 (Megabe) reported above and holes ONED26-008 and ONED26-009B pending assay; holes ONED26-010 and ONED26-011 in progress; and additional holes planned.

CEO Timo Jauristo commented:

“Our new hole at the Megabe target returned 12 m at 3.1 g/t Au, including 1 m at 18.1 g/t Au, finding gold in another one of the NW trending structures, within a fault-breccia setting similar to K92 Mining’s nearby Kora-Judd system. Our maiden holes had already confirmed that the Ontenu area hosts gold-copper mineralisation within these NW-trending structures, and the multi-element pathfinders are pointing us deeper and along strike, toward where we’d expect the higher-grade mineralisation to sit. With two rigs turning, the assays and the alteration are telling the story and guiding us towards the better parts of the system. We are looking forward to commencing drilling at Ontenu Central — where there are near-surface epithermal targets as well as the makings of a porphyry target at depth.”

Ontenu Central may be the most important target of the campaign. Partially completed detailed geological mapping has outlined three NW-trending mineralised zones overlying and along the northern margin of a 2 km zoned porphyry alteration footprint. The current program contemplates a minimum of three drill holes as a first-pass test of these new NW-trending trends. The Company is also planning a first hole of approximately 600 m to test the porphyry target, the top of which is interpreted at a relatively shallow depth of around 400 m.

The Company is conducting detailed geological mapping over both the Ontenu NE and Ontenu Central projects and has planned a drone-based LiDAR survey across the broader Ontenu area to further tighten the geological understanding and drill targeting.

ANGA PROJECT – Surface Exploration

SPMC’s Anga Project borders K92 Mining’s operations to the northeast, 1.5 km east of K92’s plant and 3 km along strike from K92’s Arakompa–Maniape vein systems. Within a 4 × 3 km footprint, coincident gold-in-soil and magnetic-low geophysical anomalies define prospective structural corridors. Mapping and rock-chip sampling at Golkona are continuing with the objective of locating the sources of these large soil anomalies and defining drill targets to test them. Previously reported Au-Cu-As-Ag soils anomalies up to 1,080 ppb Au, 3,397 ppm Cu, 2,160 ppb Ag and nearby stream-sediment pan concentrates including 281.8 ppm Au, 79.1 ppm Au, 64.9 ppm Au, and 51.6 ppm (see news release dated October 14, 2025). The Company recently commenced first-pass reconnaissance and sampling, which will continue.

Figure 4: Anga Project geophysics and soil geochemistry compilation, showing apparent conductivity (709 Hz), Au-in-soil anomalies, and mapped vein and shear structures along the SPMC-K92 property boundary. Target prospects (Golkona, Golkona South, Binano, Satup) and surface rock-chip results are annotated.

KILI TEKE PROJECT – 4.2 Moz AuEq Inferred Resource

SPMC’s wholly-owned Kili Teke Project in Hela Province hosts an NI 43-101 Inferred Mineral Resource of 4.2 Moz AuEq* (effective 18 November 2022), comprising 1.81 Moz Au, 802 kt Cu and 40 kt Mo, and remains the largest defined resource in the Company’s portfolio. Prior operator Harmony Gold completed extensive drilling and metallurgical testwork at the project; results outside the current resource include 7.8 m @ 12.98% Cu plus 11.75 g/t Au, with surface samples up to 27.5% Cu (see news release dated October 1, 2024).

* Au-equivalent contained ounces based on equal recoveries of Au and Cu only and prices of US$3,300/oz Au and US$4.45/lb Cu. Preliminary metallurgical testwork by Harmony Gold shows gold reporting to copper minerals, indicating the two can be co-recovered. Molybdenum is not included in the Au-equivalent figure.

MAY RIVER PROJECT – Data Compilation & Validation

May River is a district-scale gold-copper system adjacent to PanAust’s Frieda River deposit in PNG’s East Sepik region. Historical drilling at the project includes a copper-gold intercept of 19 m @ 11.47% Cu, 2.17 g/t Au (hole 010UF97) and gold intercepts of 109 m @ 1.53 g/t Au, 57 m @ 1.1 g/t Au and 58 m @ 1.5 g/t Au at the Skirasia prospect (holes 006SK98, 001SK98 and 011SK98), highlighting the scale and grade potential the Company is now working to advance (see news release dated October 30, 2024).

SPMC’s technical team recently completed a reconnaissance visit to the project, which set out to secure community consent for exploration, locate historical drill collars at the Skirasia prospect, and confirm site access — and achieved all three. Communities within proximity to the work area were consulted and briefed on the program, welcoming the Company to begin work.

At Skirasia, a target located within the broader Skygate Cu-Au Porphyry-Epithermal Trend, the team relocated four historical drill sites (one cemented collar and three drill pads) and recorded eight historical trenches and soil-sampling sites, with further historical holes still to be relocated. Field observations during the visit included active local alluvial mining, diatreme breccia, and highly deformed calcareous schist with secondary copper staining in creek float.

Access to the remote site was confirmed, and operational contacts were established with the PNG Defence Force, police, and PanAust at Frieda River. The reconnaissance positions May River for a renewed, community-supported exploration program, with planning for the Company’s first phase of exploration underway.

Figure 5: May River Project regional tenement map showing SPMC tenement boundaries over regional topography, prospect and target locations, historical drill-hole intercepts (including 010UF97: 19 m @ 11.47% Cu, 2.17 g/t Au and 006SK98: 109 m @ 1.53 g/t Au), existing and proposed access, and PanAust’s Frieda River deposit and proposed open pit to the southeast.

The Company will report further results from its ongoing drilling and exploration programs as they are received and reviewed.

Surface assay values referenced above are from selective rock-chip, grab and stream-sediment samples; such samples are selective by nature and are not necessarily representative of the mineralisation hosted on the Company’s properties.

Quality Assurance and Quality Control

All drill holes are logged on site by the Company’s geology team. Drill core (PQ or HQ) is half-cut, with samples secured and shipped to Intertek Laboratory in Lae, Papua New Guinea. Gold is assayed by 50 g fire assay with AAS finish (FA50/AA); copper and silver are assayed by 3-acid digest with AAS finish (PGGA03) at Intertek Lae (“preliminary” in Table 2 above). Sample pulps are subsequently sent to Intertek in Perth, Western Australia for multi-element ICP-MS analysis using a 4-acid digest (4A/MS) (“Full ME” in Table 2 above). Two certified reference materials (standards), one blank and one duplicate are inserted within each batch of 100 samples to monitor laboratory performance.

Qualified Person

The scientific and technical information disclosed in this news release is compiled by Company geologists and consultants and reviewed and approved by Darren Holden, BSc(Hons) (Geology), PhD, FAusIMM, a “Qualified Person” as defined in National Instrument 43-101 *Standards of Disclosure for Mineral Projects*. Dr. Holden is a Technical Advisor to the Company.

Marketing Agreement

The Company is providing supplemental disclosure to its news release dated June 5, 2026, in which it announced that it had entered into an online marketing agreement dated June 5, 2026, with i2i Marketing Group, LLC (“i2i”), pursuant to which i2i will provide corporate marketing and investor awareness services to the Company, including, but not limited to, content creation management, author sourcing, project management and media distribution (the “Agreement”).

The Company had agreed to an initial creation and media budget of US$300,000 (the “Initial Media Budget”) with services contemplated to commence on or about June 12, 2026, and continue until the Initial Media Budget had been fully expended. In order to comply with the policies of the TSX Venture Exchange, the Agreement has been amended to provide that the Initial Media Budget will cover a period of four months, with services contemplated to commence on or about June 22, 2026, subject to acceptance by the TSX Venture Exchange.

Following the initial four-month term, the Agreement may continue on a month-to-month basis for additional campaign expenditures as agreed upon by the parties in advance, subject to acceptance by the TSX Venture Exchange.

About South Pacific Metals Corp.

South Pacific Metals Corp. is an emerging gold-copper exploration company operating in the heart of Papua New Guinea’s proven gold and copper production corridors. SPMC has four exploration properties:

  • Ontenu (Osena) – Bordering K92 to the southwest. Drilling underway on K92-style targets with surface assays up to 21% Cu, 13.9 g/t Au, 645 g/t Ag and 73 g/t Au defining kilometre-scale corridors.
  • Anga – Bordering K92 to the northeast, along strike from K92’s Arakompa discovery; soils to 1,080 ppb Au, 3,397 ppm Cu and stream samples up to 8 g/t Au.
  • Kili Teke2 Moz AuEq* NI 43-101 Inferred Resource (effective 18 November 2022) containing 1.81 Moz Au, 802 kt Cu, & 40 kt Mo; results outside of resource include drilling 7.8 m @ 12.98% Cu plus 11.75 g/t Au, surface samples up to 27.5% Cu.
  • May River – District-scale system beside Frieda River; high-grade drilling includes 19 m @ 11.47% Cu, 2.17 g/t Au and 109 m @ 1.53 g/t Au.

* Au-equivalent contained ounces based on equal recoveries of Au and Cu only and prices of US$3,300/oz Au and US$4.45/lb Cu. Preliminary metallurgical testwork by Harmony Gold shows gold reporting to copper minerals, indicating the two can be co-recovered. Molybdenum is not included in the Au-equivalent figure.

SPMC common shares are listed on the TSX Venture Exchange (TSX.V: SPMC), the OTCQB Marketplace (OTCQB: SPMEF) and Frankfurt Stock Exchange (FSE: 6J00).

For further information please contact:

Michael Murphy, Executive Chairman

Tel: +1-604-260-0309

Email: info@southpacificmetals.ca

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

Cautionary Note Regarding Forward-Looking Information

This news release contains “forward-looking information” within the meaning of applicable Canadian securities laws. Forward-looking information is often, but not always, identified by words and phrases such as “anticipates”, “expects”, “intends”, “plans”, “believes”, “estimates”, “may”, “could”, “would”, “will”, “potential”, “proposed”, “subject to” and similar expressions, or statements that certain actions, events or results “may”, “could”, “would” or “will” occur or be achieved. Forward-looking information in this news release includes, among other things, statements regarding the Company’s planned and ongoing drilling and exploration programs, the timing and expected results of those programs, the interpretation of geological, geochemical and geophysical data, the potential for mineralisation on the Company’s properties.

Forward-looking information is based on the Company’s current expectations, estimates, forecasts and projections, as well as assumptions that the Company considers reasonable as of the date of this news release. These assumptions include, among others: the continuity of mineralisation; the accuracy of the Company’s interpretation of geological, geochemical and geophysical data; the timing and results of planned and ongoing drilling and exploration; the timeliness of assay results from third-party laboratories; the Company’s ability to obtain and maintain required permits and regulatory approvals; the continued support of local communities and government stakeholders in PNG; the availability of equipment, personnel and consultants; continued access to project sites; and general business, economic and capital market conditions.

Forward-looking information is subject to known and unknown risks, uncertainties and other factors that may cause actual results, performance or achievements to differ materially from those expressed or implied by such forward-looking information. These risks and uncertainties include, among others: risks inherent in mineral exploration and development, including that exploration may not result in the discovery of an economically viable mineral deposit; the risk that drilling results, assays and geological interpretations may not be indicative of the presence, continuity or grade of mineralisation; delays in receiving assay results or in the progress of exploration programs; the risk that historical results and third-party data may not be verified or replicated; uncertainties relating to mineral resource estimates, including the Kili Teke Inferred Mineral Resource; the risk that planned exploration activities may be delayed, modified, suspended or terminated; risks relating to title, permitting and access to mineral properties; risks relating to operations in Papua New Guinea, including political, security, infrastructure, community-relations and logistical risks; the Company’s ability to fund its business and exploration activities; commodity price volatility; currency fluctuations; and the other risks described in the Company’s public disclosure documents filed under its profile on SEDAR+.

Readers are cautioned not to place undue reliance on forward-looking information. The forward-looking information contained in this news release is made as of the date hereof, and the Company does not undertake any obligation to update or revise any forward-looking information, whether as a result of new information, future events or otherwise, except as required by applicable securities laws.