Sankamap Announces Airborne Geophysical Survey Results Highlighting Promising Anomalies

Sankamap Metals Inc. (CSE: SCU) ("Sankamap" or the "Company") is pleased to announce the completion of data processing and reports from Expert Geophysics for the 374 line-kilometer Airborne Magnetotelluric EM Survey ("Mobile MT") completed in July 2025. The survey covered 3,500 hectares of Sankamap's 4,500-hectare ("Ha") Kuma property ("Kuma") (populated areas excluded) located 37 kilometers ("km") southeast of Honiara in south-central Guadalcanal, Solomon Islands.

CEO John Florek commented:

"We are very encouraged by the results of the airborne geophysical survey, which reveal clear signatures consistent with porphyry-style mineralization. The strong alignment between these geophysical features, surface geochemistry, and alteration mapping gives us greater confidence in the continuity of mineralization at depth and helps refine our upcoming drill targets."

Highlights

The results of the Mobile MT survey at Kuma reveals a broad 5 x 2 km ring-shaped zone of high conductivity that flanks a central 2 x 3 km highly resistive feature (see Figure 2), with the conductive feature spatially correlating to the mapped lithocap.
Geophysical data indicate potential for multiple intrusive centers and porphyry systems, while the alignment of magnetic and conductive trends suggests structural controls or fluid pathways associated with mineralization.
The resistive and conductive trends display typical porphyry signatures, similar to other economic porphyry systems currently being mined.

The results from the 2025 Mobile MT survey delineate resistive and conductive features consistent with porphyry, epithermal, and skarn-style mineral systems. The geophysical data further corroborate earlier surface exploration findings at the Kuma property, which delineated a well-developed lithocap exceeding two kilometers in extent. Hyperspectral analysis has outlined extensive phyllic, argillic, and advanced argillic alteration zones, while grab sampling has returned impressive assay results of up to 11.7% copper ("Cu") and 13.5 g/t gold ("Au"), underscoring the strength and continuity of mineralization within the system.

The Kuma Project is strategically located along a highly prospective trend that hosts several major deposits; Lihir containing 71 Moz Au¹ (310 Mt containing 23 Moz Au at 2.3 g/t Proven+Probable ("P&P"), 520 Mt containing 39 Moz Au at 2.3 g/t indicated, 81 Mt containing 5 Moz Au at 1.9 g/t measured, 61 Mt containing 4.9 Moz Au at 2.3 g/t Inferred) and Panguna containing 19.3 Moz Au + 5.3 Mt Cu² (1.5 Mt containing 16.1 Moz Au at 0.33 g/t and 4.6 Mt Cu at 0.3 % Indicated, 300 Mt containing 3.2 Moz Au 0.4 g/t and 0.7 Mt Cu Inferred), both share geological similarities to the Kuma project.

Technical Discussion

Porphyry Cu-Au systems can exhibit a broad spectrum of electromagnetic (EM) responses, reflecting different host rocks, alteration styles, erosional levels and geological conditions unique to each system. For example, systems with intact lithocaps, which is potentially the case at Kuma, often differ from those with eroded or exposed mineralized cores, producing either predominantly conductive or resistive EM signatures.

As at Kuma, most calc-alkaline porphyry systems exhibit elevated electrical conductivity, largely attributable to extensive pyritic halos and mica-rich alteration zones that envelop a potassic core (as displayed in Figure 2 and 3). This core typically appears as a distinctly resistive feature, reflecting zones of magnetite or K-feldspar alteration characterized by relatively low sulfide concentrations.

In July 2025, Expert Geophysics was engaged to conduct a 374 line-kilometer airborne geophysical survey (Mobile MT), which was flown along north-south lines at 100-meter intervals (Figure 1).

The final geophysical data processing has been completed. Sankamap, together with Expert Geophysics and independent geophysical consultants familiar with this type of data, have reviewed the results. The survey highlights several significant geophysical features that will assist in defining the next phase of exploration and drill targeting.

Figure 1: Kuma property and lithocap extent with Mobile MT survey flight lines.

To view an enhanced version of this graphic, please visit:
https://images.newsfilecorp.com/files/11623/272353_a2474b4434dceb50_002full.jpg

The geophysical models reveal a highly conductive feature that forms a continuous ring-shaped zone flanking a central resistive body. This conductive anomaly appears consistent with a potassic intrusive core or a resistive intrusive complex at depth. Notably, the highest conductivity corresponds with surface zones of advanced argillic and clay-mica alteration (Figure 2).

The conductivity and resistivity highs coincide with a previously mapped annular topographic depression, suggesting potential preferential erosion within the propylitic alteration zone surrounding a core of phyllic-altered rocks (Figure 2). The alignment of these geophysical, geological, and geomorphological features supports a coherent porphyry-style hydrothermal model, with a resistive intrusive core surrounded by conductive alteration halos and erosional depressions marking outer alteration zones.

The integration of these datasets provides a strong 3D framework for ongoing exploration and drill targeting.

Figure 2: Apparent conductivity map from Mobile MT survey on the Kuma property at -200m elevation.

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https://images.newsfilecorp.com/files/11623/272353_a2474b4434dceb50_003full.jpg

Figure 3: Resistivity section at 8919250 mN from Mobile MT survey on the Kuma property.

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https://images.newsfilecorp.com/files/11623/272353_a2474b4434dceb50_004full.jpg

Strategic Plan

$4.7 million financing closed (October 3, 2025, press release), positioning Sankamap Metals Inc. to advance exploration programs beginning in November.
Acquisition and deployment of drilling equipment underway in preparation for the January 2026 drilling campaign.

Kuma Property

Target Refinement: Ongoing analysis of newly released geophysical and geological datasets to define and prioritize high-quality drill targets.
Pad & Camp Construction: Scheduled to begin in late November.
Field Visit: Planned for early November to ground-truth targets, verify geological interpretations, and finalize logistics.
Drilling Program: Inaugural campaign to commence in January 2026, marking a key milestone in advancing the Kuma Project toward discovery.

Fauro Property

Prospecting activities to begin, following up on additional magnetic highs associated with elevated gold and copper values (see press release dated July 16, 2025).

Corporate & Investor Relations

Upcoming exploration milestones to serve as key catalysts for shareholder value creation.
Targeted marketing campaign underway to showcase the company's exploration potential and investment opportunity.

Grant of Options

Subject to regulatory approval, the Company has granted 2,250,000 stock options to its directors, officers and consultants, exercisable for five years at a price of $0.30.

About Sankamap Metals Inc.

Sankamap Metals Inc. (CSE: SCU) is a Canadian mineral exploration company dedicated to the discovery and development of high-grade copper and gold deposits through its flagship Oceania Project, located in the South Pacific. The Company's fully permitted assets are strategically positioned in the Solomon Islands, along a prolific geological trend that hosts major copper-gold deposits; including Newmont's Lihir Mine, with a resource of 71.9 million ounces of gold¹ (310 Mt containing 23 Moz Au at 2.3 g/t P+P, 520 Mt containing 39 Moz Au at 2.3 g/t indicated, 81 Mt containing 5 Moz Au at 1.9 g/t measured, 61 Mt containing 4.9 Moz Au at 2.3 g/t Inferred).

Exploration is actively advancing at both the Kuma and Fauro properties, part of Sankamap's Oceania Project in the Solomon Islands. Historical work has already highlighted the mineral potential of both sites, which lie along a highly prospective copper and gold-bearing trend, suggesting the possibility of further, yet-to-be-discovered deposits.

At Kuma, the property is believed to host an underexplored and largely untested porphyry copper-gold (Cu-Au) system. Historical rock chip sampling has returned consistently elevated gold values above 0.5 g/t Au, including a standout sample assaying 11.7% Cu and 13.5 g/t Au²; underscoring the area's significant potential.

At Fauro, particularly at the Meriguna Target, historical trenching has returned highly encouraging results, including 8.0 meters at 27.95 g/t Au and 14.0 meters at 8.94 g/t Au³. Complementing these results are exceptional grab sample assays, including historical values of up to 173 g/t Au³, along with recent sampling by Sankamap at the Kiovakase Target, which returned numerous high-grade copper values, reaching up to 4.09% Cu. In addition, limited historical shallow drilling intersected 35.0 meters at 2.08 g/t Au³, further underscoring the property's strong mineral potential and the merit for continued exploration. With a commitment to systematic exploration and a team of experienced professionals, Sankamap aims to unlock the untapped potential of underexplored regions and create substantial value for its shareholders. For more information, please refer to SEDAR+ (www.sedarplus.ca), under Sankamap's profile.

1. Newcrest Technical Report, 2020 (Lihir: 310 Mt containing 23 Moz Au at 2.3 g/t P+P, 520 Mt containing 39 Moz Au at 2.3 g/t indicated, 81 Mt containing 5 Moz Au at 1.9 g/t measured, 61 Mt containing 4.9 Moz Au at 2.3 g/t Inferred)

2. Historical grab, soil and BLEG samples from SolGold Kuma Review June 2015, and SolGold plc Annual Report 2013/2012

3. September 2010-June 2012 press releases from Solomon Gold Ltd. and SolGold Fauro Island Summary Technical Info 2012

QP Disclosure

The technical content for the Oceania Project in this news release has been reviewed and approved by John Florek, M.Sc., P.Geol., a Qualified Person in accordance with CIM guidelines. Mr. John Florek is in good standing with the Professional Geoscientists of Ontario (Member ID:1228) and a director and officer of the Company.

ON BEHALF OF THE BOARD OF DIRECTORS

s/ "John Florek"
John Florek, M.Sc., P.Geol
Chief Executive Officer
Sankamap Metals Inc.

Contact:
John Florek, CEO
T: (807) 228-3531
E: johnf@sankamap.com

The Canadian Securities Exchange has not approved nor disapproved this press release.

Forward-Looking Statements

Forward-Looking Statements Certain statements in this release constitute "forward-looking statements" or "forward-looking information" within the meaning of applicable securities laws including, without limitation, the timing, nature, scope and details regarding the Company's exploration plans and results at its projects. Such statements and information involve known and unknown risks, uncertainties and other factors that may cause the actual results, performance or achievements of the Company, its projects, or industry results, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements or information. Such statements can be identified by the use of words such as "may", "would", "could", "will", "intend", "expect", "believe", "plan", "anticipate", "estimate", "scheduled", "forecast", "predict" and other similar terminology, or state that certain actions, events or results "may", "could", "would", "might" or "will" be taken, occur or be achieved. These statements reflect the company's current expectations regarding future events, performance and results and speak only as of the date of this release.

Forward-looking statements and information contained herein are based on certain factors and assumptions regarding, among other things, the estimation of mineral resources and reserves, the realization of resource and reserve estimates, metal prices, taxation, the estimation, timing and amount of future exploration and development, capital and operating costs, the availability of financing, the receipt of regulatory approvals, environmental risks, title disputes and other matters. While the Company considers its assumptions to be reasonable as of the date hereof, forward-looking statements and information are not guarantees of future performance and readers should not place undue importance on such statements as actual events and results may differ materially from those described herein. The Company does not undertake to update any forward-looking statements or information except as may be required by applicable securities laws.

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Sankamap Metals

Drill-ready copper-gold discovery potential in the Pacific Ring of Fire

Drill-ready copper-gold discovery potential in the Pacific Ring of Fire Keep Reading...

Investor Insight

Sankamap Metals is advancing two 100 percent-owned, drill-ready copper-gold assets in the Solomon Islands, one of the last underexplored regions of the Pacific Ring of Fire. With active drilling underway at Kuma, multiple drill-ready targets at Fauro, and a leadership team that has collectively raised more than $1 billion, the company offers investors exposure to near-term discovery catalysts in a proven mineral belt.

Overview

Sankamap Metals (CSE:SCU) is a Canadian exploration company focused on advancing the Oceania Project, a copper-gold exploration portfolio located in the Solomon Islands. The company controls two 100 percent-owned assets, Kuma and Fauro, situated within one of the last underexplored regions of the Pacific Ring of Fire, a globally significant belt known for hosting major porphyry and epithermal mineral deposits.

Sankamap Metals Oceania Project Location

The company’s projects are strategically positioned along the same regional mineral trend as world-class deposits, including Newmont’s 71.9 Moz Lihir gold mine. Despite the region’s demonstrated mineral endowment, large areas remain underexplored, creating an opportunity for new copper-gold discoveries.

Sankamap’s asset portfolio combines high-grade historical results with compelling large-scale exploration targets. Kuma hosts a kilometre-scale copper-gold anomaly and historical grab samples returning up to 11.7 percent copper and 13.5 g/t gold. Fauro hosts seven identified prospects and has delivered historical results including grab samples up to 173 g/t gold, trench results of 8 metres grading 27.95 g/t gold and drill intercepts including 35 metres at 2.08 g/t gold.

The company is led by an experienced management and technical team with extensive backgrounds across major and junior mining companies. Through the Metals Group platform, the leadership team has collectively raised more than $1 billion in public and private markets and is advancing a fully funded 2026 exploration program highlighted by active drilling at Kuma and planned exploration activities at Fauro.

Company Highlights

Two 100 percent owned drill-ready assets: The Oceania Project comprises the Kuma and Fauro copper-gold properties in the Solomon Islands.
Exceptional historical results: Exploration has returned values of up to 11.7 percent copper and 13.5 g/t gold at Kuma, 173 g/t gold at Fauro, and drill intercepts including 35 metres grading 2.08 g/t gold.
Located along a proven mineral trend: The projects are situated within the same regional copper-gold belt that hosts major deposits including Newmont’s 71.9 Moz Lihir gold mine.
One of the last underexplored Ring of Fire jurisdictions: The Solomon Islands, remains largely underexplored despite hosting geological characteristics associated with major porphyry and epithermal systems.
Large-scale discovery potential: Kuma hosts a kilometre-scale copper-gold anomaly and geophysical signatures consistent with porphyry-style mineralization, while Fauro contains seven identified prospects with multiple high-grade epithermal and porphyry-style targets.
Active 2026 exploration program: The inaugural drill campaign is underway at Kuma, with additional exploration planned at Fauro.
Experienced metals group leadership: Management and directors have collectively raised more than $1 billion and have a track record of building successful mining companies and generating shareholder returns.

Key Projects

The Oceania Project consists of the Kuma and Fauro properties, two 100 percent-owned copper-gold assets positioned within a highly prospective segment of the Pacific Ring of Fire. Together, the projects provide exposure to both porphyry copper-gold and epithermal gold mineralization styles in a region that remains significantly underexplored relative to its geological potential.

Sankamap Metals projects

Kuma Property

Sankamap Metals Kuma Property

The 43 square kilometre Kuma property is located approximately 37 kilometres southeast of Honiara on Guadalcanal Island and is considered a drill-ready porphyry target with potential for a large-scale mineralized system. Historical sampling returned values of up to 11.7 percent copper and 13.5 g/t gold, while exploration has defined a kilometre-scale copper-gold geochemical anomaly across the property.

Recent geophysical programs have identified resistive and conductive features consistent with porphyry-style mineralization and helped refine priority drill targets. Exploration has also identified a large alteration system and evidence of a potential porphyry copper-gold deposit that remains untested by drilling. The inaugural drill campaign is now underway, representing the first modern test of this highly prospective target.

Sankamap Metals Kuma Property Conceptual Model

Fauro Property

The 147 square kilometre Fauro property hosts a high-potential epithermal gold system with indications of a porphyry system at depth. Formed by the collapse of the Fauro calc-alkaline volcano, the property contains seven identified prospects, including three drill-ready targets and four additional exploration targets.

Historical exploration has produced significant gold results, including grab samples up to 173 g/t gold, trench results of 8 metres at 27.95 g/t gold, and drill intercepts of 35 metres at 2.08 g/t gold. Multiple targets, including Meriguna, Ballyorlo and Kiovakase, remain open for further exploration, while recent sampling returned values of up to 19.25 g/t gold and up to 4 percent copper, supporting the potential for both epithermal and porphyry-style mineralization.

Sankamap Metals Faur Property

With active exploration programs, multiple drill-ready targets, and exposure to one of the world’s most prospective yet underexplored copper-gold regions, the Oceania Project offers investors several near-term discovery opportunities.

Management Team

John Florek – Chief Executive Officer

John Florek is a professional geologist with more than 30 years of technical and senior management experience in the mining industry. He has worked with major mining companies including BHP, Placer Dome, Barrick, Teck, Detour Gold, Kirkland Lake Gold and Agnico Eagle, helping identify and advance projects from grassroots exploration through development. He currently serves on the board of McEwen Mining and is CEO, president and director of Emperor Metals.

John Williamson – Chairman, Co-Founder and Director

John Williamson is a professional geologist with more than 35 years of experience in the global mining sector. Founder of the Metals Group and more than 20 successful companies, he has raised over $1 billion through public and private markets and has established a strong track record of creating value and delivering shareholder returns.

Sean Mager – CFO and Director

Sean Mager brings more than 30 years of experience in the global mining industry, with expertise spanning corporate development, stakeholder relations, regulatory affairs, finance and operations. He is a co-founder of the Metals Group and has been involved in numerous successful mining ventures.

Krystle Adair – Vice President, Exploration

Krystle Adair is a professional geologist with more than 13 years of exploration experience across the Americas. She has managed exploration programs covering multiple deposit types in Canada, the United States and Peru and is a registered professional geologist in British Columbia.

Arthur Hannett – Director

Arthur Hannett is a professional engineer with more than 17 years of mining industry experience. He has worked with major operators including Placer Dome, Barrick, Glencore and Agnico Eagle and brings valuable regional experience as a national of Bougainville Island, Papua New Guinea.

Donald Marahare – Director

Donald Marahare is a seasoned legal professional with more than 20 years of experience in the Solomon Islands. As principal of DNS & Partners Law Firm, he has extensive expertise in civil litigation and commercial law and provides important local legal and governance insight to the company.

Sankamap Announces Airborne Geophysical Survey Results Highlighting Promising Anomalies

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