South Pacific Metals Announces More Mineralised Structures Discovered at Ontenu NE: Assay Results up to 13.9g/t Au, 388g/t Ag, 0.26% Cu
South Pacific Metals Announces More
Mineralised Structures Discovered at Ontenu
NE: Assay Results up to 13.9g/t Au, 388g/t Ag,
0.26% Cu
Vancouver, British Columbia--(Newsfile Corp. - October 6, 2025) -
South Pacific Metals Corp.
(TSXV:
SPMC) (OTCQB: SPMEF) (FSE: 6J00) ("
SPMC
" or the "
Company
") is pleased to announce rock chip
assay results from more new discoveries of mineralized structures, at the Ontenu NE prospect within its
Osena Project. The Project lies within a major NE-SW corridor known as the Kainantu Transfer Zone,
which also hosts the large Kainantu Gold-Copper mine being mined by K92 Mining Ltd.
Highlights:
More mineralised
structures similar to, and south of, the newly discovered zone reported
September 17, 2025, including:
Several narrow structures within a wider structural zone,
assays include:
13.9g/t Au & 388g/t Ag
3.68g/t Au, 302g/t Ag
Another new structure
(0.3m to 0.5m wide breccia/vein zone),
assays include:
3.36g/t Au, 302g/t Ag
11 other samples along these and other structures returned assays between 0.1-1g/t Au (and up to
184g/t Ag and 0.26% Cu)
These new northwest trending structures are south of, and expand, the zone previously reported on
September 17, 2025 (refer to Figure 2 below) that returned the following results:
3.95g/t Au, 1.2% Cu and 603g/t Ag
2.65g/t Au, 0.6% Cu, 337g/t Ag
2.18g/t Au, 0.1% Cu, 100g/t Ag
Ontenu NE now has multiple
epithermal Au-Cu
targets with:
At least
6 identified mineralized structures
mapped out over
several hundred metres
With coincident
As-Au-(Cu) soil anomalies up to
1200m long
NW-SE and N-S structures, host rocks and geologic setting and geochemical association
similar to the high-grade veins currently being mined and explored at the nearby
K92 Mine
Mapping and sampling are ongoing (further assays pending)
Drill planning to test these targets is underway
Trenching and reconnaissance continuing on the wider Ontenu Project area as well as the Anga
Project
"We are pleased by the continuing discovery of more of these mineralised structures. We believe
these structures could represent the upper levels of deeper, higher grade epithermal Au-Cu veins."
said Timo Jauristo, CEO of the Company.
"Our drill planning is well underway and we are geared up
to start drill testing these targets in the coming month. We are excited to start drilling the first holes to
test these targets. "
Figure 1. Ontenu NE area soil contours, rock chip results and mapped structures. New high-
grade Au-Ag labelled with green outline. Ontenu NE is dominated by NW-SE striking
structures. Refer to Appendix 1 for details on latest results.
To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/10890/269183_dc73ed94b4e1c95e_001full.jpg
Figure 2. Structures at southwestern part of Ontenu NE area. Assays for new results are
outlined in green, with new sample location in red squares with white outline. Refer to
Appendix 1 for details on latest results.
To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/10890/269183_dc73ed94b4e1c95e_003full.jpg
About the Osena Project
Covering 738 km² of strategic ground, the
Osena Project
is located southwest of and adjacent to K92's
tenements that host the Kainantu Gold Mine. Priority prospects include Ontenu, a large-scale cluster of
five intrusive Copper-Gold porphyry and epithermal vein targets extending over 5 km x 3 km. The Ontenu
Prospect is one of many occurring within a mineralized corridor that extends more than 40 km northeast
across the Kainantu District.
Figure 3. Kainantu District with SPMC's Osena Project (SW) and Anga Project (NE) relative to
K92 Mining Ltd's deposits.
To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/10890/269183_dc73ed94b4e1c95e_004full.jpg
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. With an expansive 3,100 km² land
package and four transformative gold-copper projects contiguous with major producers K92 Mining,
PanAust and neighbouring Barrick/Zijin, new leadership and experienced in-country teams are
prioritizing thoughtful and rigorous technical programs focused on boots-on-the-ground exploration to
prioritize discovery across its portfolio projects: Anga, Osena, Kili Teke, and May River.
Immediately flanking K92 Mining's active drilling and gold producing operations to the northeast and
southwest, SPMC's Anga and Osena Projects are located within the high-grade Kainantu Gold District -
each having the potential to host similar-style lode-gold and porphyry copper-gold mineralization as that
present within K92's tenements. Kili Teke is an advanced exploration project situated only 40 km from
the world-class Porgera Gold Mine and hosts an existing Inferred Mineral Resource with multiple
opportunities for expansion and further discovery. The May River Project is located adjacent to the world-
renowned Frieda River copper-gold project, with historical drilling indicating potential for a significant,
untapped-gold mineralized system. SPMC common shares are listed on the TSX Venture Exchange
(TSX.V: SPMC), the OTCQB Marketplace (OTCQB: SPMEF) and Frankfurt Stock Exchange (FSE:
6J00).
Quality Assurance and Quality Control
Rock Sampling
Rock samples are selective and collected by a consultant geologist and Company geologists in the field.
Samples were sent to the ITS (PNG) Ltd (Intertek) Laboratory in Lae. Gold assays were conducted using
50g charge Fire Assay with Atomic Absorption Spectra finish (Intertek Code FA50/AA), with a detection
limit of 0.01ppm. Copper and silver assays were assayed with 3-acid digest (Intertek Code PGGA03).
Samples are also being sent for full multi-element assays to be determined using 4-acid digestion with
Mass Spectrometry (ICPMS) (Intertek code 4A/MS48).
Certified reference material, duplicates and blanks were inserted into the rock sample stream to monitor
laboratory performance, with no significant variations from expected results.
Qualified Person
The scientific and technical information disclosed in this release has been compiled by Company
geologists and consultants and reviewed and approved by Darren Holden, BSc(Hons) (Geology), PhD,
FAusIMM, a "Qualified Person" as defined under the Canadian Institute of Mining National Instrument 43-
101
Standards of Disclosure for Mineral Projects
. Dr. Holden is a Technical Advisor to the Company.
For further information please contact:
Michael Murphy, Executive Chair
or
Investor Relations
South Pacific Metals Corp.
Tel: +1-604-653-9464
Email:
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.
Disclaimer and Forward-Looking Information
Statements contained in this release that are not historical facts are forward-looking statements that involve various risks and uncertainty affecting
the business of SPMC. In making the forward-looking statements, SPMC has applied certain assumptions that are based on information available
to the Company, including SPMC's strategic plan for the near and mid-term. There is no assurance that such information will prove to be accurate,
as actual results and future events could differ materially from those anticipated in such statements. Forward-looking statements may involve
various risks and uncertainties affecting the business of the Company. These forward-looking statements can generally be identified as such
because of the context of the statements, including such words as "believes," "anticipates," "expects," "plans", "may", "estimates", or words of a
similar nature. Forward-looking statements or information in this news release relate to, among other things: the start of drill testing and the timing
thereof,
and further exploration 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, regulatory, or other unforeseen uncertainties and contingencies. These assumptions include,
without limitation: success of the Company's projects, prices for metals 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. Accordingly, readers should not place undue
reliance on forward-looking information. 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, the Company's 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 the Company's filings with Canadian securities regulators on SEDAR+
(
www.sedarplus.ca
). 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.
Mineralization hosted on adjacent and/or nearby properties is not necessarily indicative of mineralization hosted on the Company's property.
Appendix 1
Table 1.
Latest campaign rock chips from Ontenu NE >0.1g/t Au. All coordinates in WGS 84 Zone 55.
Sample
ID
Easting
Northing
Elevation
Description
Au
(g/t)
Ag
(g/t)
Copper
(ppm)
E21070
365639
9295498
1709
0.5m wide breccia with smoky quartz veins
13.9
388
218
E21056
365767
9295380
1712
30-50cm vein with pyrite-sphalerite-galena
3.68
302
320
E21067
365637
9295512
1706
Oxidised breccia with siliceous zones and sulphides
3.36
15
169
E21058
365766
9295383
1713
1.5m x 0.5m quartz boulder (proximal to source) with
pyrite-sphalerite-galena
0.478
184
565
E21062
365676
9295437
1699
30-50cm vein with pyrite-sphalerite-galena
0.476
37
224
E21053
365750
9295386
1693
30-50cm vein with pyrite-sphalerite-galena
0.405
65
110
E21063
365680
9295442
1698
Siliceous quartz (float) with pyrite-sphalerite-galena
0.374
7
2680
E21059
365703
9295410
1696
30-50cm vein with pyrite-sphalerite-galena
0.347
9
2384
E21066
365638
9295515
1705
Oxidised breccia with siliceous zones and sulphides
0.34
9
111
E21049
365579
9295399
1687
Silica flooded graphitic share with pyrite / poss
galena/sphalerite
0.195
4
53
E21060
365680
9295420
1698
0.8m wide fault gouge / flour structure with clay-pyrite
0.181
14
132
E21051
365646
9295419
1701
Gossanous structure with quartz+pyrite
0.172
8
79
E21065
365639
9295516
1704
1m wide breccia in mylonitic graphitic shale with pyrite-
sphalerite-galena
0.154
11
68
E21069
365639
9295502
1708
0.5m wide gossanous lode
0.138
3
87
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