Riversgold Saint John Project Delivers Standout Rock Chip Results in New Brunswick

Multi-Element Bonanza: Riversgold's Saint John Project Delivers Standout Rock Chip Results Across Multiple Prospects

Riversgold Limited (ASX: RGL) has released preliminary rock sample assay results from its Saint John antimony, gold, copper, and silver project in New Brunswick, Canada. The Riversgold Saint John project rock chip results in New Brunswick Canada have been confirmed by farm-in partner AIS Resources (TSXV: AIS), showing elevated grades across a striking range of commodities — including several samples that exceeded laboratory upper detection limits for copper, gold, silver, lead, and antimony.

The results represent the first on-ground work completed by AIS since the farm-in agreement was executed, and they cover three distinct prospect areas: Prince of Wales, Lepreau, and Scott Falls Dam. A total of 24 grab and chip rock samples were submitted to Activation Laboratories (Actlabs), with multi-element results now bringing the cumulative total of reported samples across the project to 92.

The Highlights That Matter: Detection Limits Breached Across Five Metals

When laboratory assay results exceed the upper detection limit — meaning the instrument cannot measure how high the grade actually is — it signals the presence of exceptionally high concentrations that warrant immediate re-assay using specialist methods. For investors, this is a strong early indicator of meaningful surface mineralisation.

In this batch of 24 samples, detection limits were exceeded for five separate metals across multiple prospects:

Several individual samples stand out as particularly notable. Sample 664908 returned copper values above 10,000 ppm alongside cobalt of 1,180 ppm, while sample 664911 combined gold of 507 ppb, silver of 78.4 ppm, copper above 10,000 ppm, and lead above 5,000 ppm — all from a single Prince of Wales rock chip.

At Lepreau, samples 664921 and 664922 both returned gold above 5,000 ppb alongside copper grades of 7,200 ppm and 4,340 ppm respectively.

Understanding the Commodity Spread: Why Multi-Element Mineralisation Matters

What Is Multi-Element Mineralisation, and Why Does It Matter to Investors?

Most early-stage exploration projects are focused on a single commodity — typically gold or copper. What makes the Riversgold Saint John project rock chip results in New Brunswick Canada particularly compelling at this preliminary stage is the simultaneous occurrence of economically relevant concentrations of multiple metals across the same sample areas.

The current exploration model considers the property prospective for IOCG-style (Iron Oxide Copper-Gold) mineralisation, as well as intrusive-related magmatic copper-gold and structurally controlled copper-silver-gold systems. IOCG deposits are among the world's most significant copper-gold deposit types — examples include Olympic Dam in South Australia and Candelaria in Chile.

Beyond the headline copper and gold, furthermore, several of the reported metals carry additional strategic significance:

• Antimony (Sb): A critical mineral used in flame retardants, semiconductors, and increasingly in grid-scale energy storage. Supply is highly concentrated globally, and demand is growing.
• Rhenium (Re): One of the rarest and most valuable metals on Earth, used in high-temperature jet engine superalloys. The project returned rhenium values up to 5.23 ppm — a figure that, whilst from a selective grab sample, is worth monitoring as exploration advances.
• Cobalt (Co): A key battery metal, with results ranging up to 1,180 ppm in this sample batch.
• Molybdenum (Mo): An industrial metal used in high-strength steel alloys and catalysts, with Lepreau samples returning up to 3,070 ppm.

Understanding Key Technical Terms

What Do These Mining Terms Actually Mean?

IOCG (Iron Oxide Copper-Gold): A class of mineral deposit characterised by high iron oxide content alongside economic copper and gold — often associated with large hydrothermal systems.

ppb (parts per billion): A unit used for gold grades; 1,000 ppb = 1 g/t (gram per tonne).

ppm (parts per million): Used for base metals and critical minerals; 10,000 ppm = 1%.

Grab sample: A selective sample taken from exposed rock; not representative of average grade across a deposit.

Chip sample: A sample chipped systematically across a rock face, providing more representative material than a grab sample.

JORC Code: The Australasian Joint Ore Reserves Committee standard governing how exploration results, mineral resources, and ore reserves are reported by ASX-listed companies.

"This program was the first on ground work by AIS and has reconfirmed elevated copper, gold, silver, antimony and associated critical-mineral values in selected surface samples across multiple target areas. The results support the need for continued systematic exploration, including mapping, prospecting, geochemical sampling, geophysical interpretation and target generation."

— David Lenigas, Executive Chairman, Riversgold Limited

A Farm-In Structure That Protects Shareholder Value

One of the more investor-friendly elements of the Saint John story is the structure of the farm-in agreement between Riversgold and AIS Resources. Consequently, this arrangement provides meaningful capital efficiency for Riversgold shareholders.

Under the agreement:

• AIS can earn up to 75% of the Saint John Project over a 4-year period by spending C$4.4 million on exploration
• Riversgold retains 100% ownership of the project at this stage — AIS has not yet earned any equity
• Riversgold will retain a 25% free-carried interest through to a decision to mine — meaning Riversgold does not need to contribute to exploration expenditure to maintain its stake until a production decision is made

This structure means AIS is funding the current exploration program, including these rock chip results, at no dilutive cost to Riversgold shareholders. For a company of Riversgold's size, having a partner fund C$4.4 million in exploration whilst retaining a free-carried interest to mine is a highly capital-efficient arrangement.

Separately, Riversgold holds an option agreement to acquire 100% of the Saint John Project from Geosearcher Inc. and Mr Robert Murray, with total consideration of C$300,000 payable across staged annual payments (initial payment of C$60,000 already made). Upon exercise, a 2% Gross Smelter Return (GSR) royalty applies, with 50% of that royalty repurchasable for C$1,000,000.

What Comes Next: A Drill Program Is in Sight

The current results are explicitly described as preliminary and selective — grab and chip samples from outcrop exposures, quarry pits, and road cuts. They are not resource estimates and do not represent average grades across the project. However, they serve a critical function in early-stage exploration: validating historical results and identifying priority targets for systematic follow-up.

The roadmap ahead is clearly defined:

1. Re-assay of over-limit samples — Six copper, two gold, four silver, six antimony, and three lead samples have exceeded laboratory upper detection limits and will be submitted for re-assay using appropriate high-range methods. These results, once received, will provide cleaner data on actual grades.
2. Continued systematic sampling — New batches of samples are being delivered to the laboratory on a regular basis, with results to be announced as they are processed.
3. Geological mapping and geochemical programs — Ongoing ground work is being used to build out the structural and lithological framework across the project.
4. Geophysical data integration — Historical geophysical datasets (including aeromagnetics, VLF, gravity, and LiDAR) are being combined with current results to define drill targets.
5. Maiden drill program — A local driller has already been contracted. The maiden drill program has received approval from the DNRED (New Brunswick Mines Department). Drilling represents the first major step toward converting surface anomalies into subsurface resource definition.

Why the Saint John Project Deserves Investor Attention

Southern New Brunswick is characterised in the announcement as a prospective and underexplored mineral jurisdiction with a long history of mineral occurrences and past-producing deposits. The region's complex Appalachian geology hosts favourable environments for copper, gold, silver, lead, zinc, antimony, cobalt, nickel, and other critical minerals.

Critically, the project benefits from accessible infrastructure including road access, proximity to tidewater, and proximity to industrial services — factors that meaningfully de-risk future development logistics.

The multi-prospect nature of the project is a key differentiator. Results reported to date span the Prince of Wales, Lepreau, and Scott Falls Dam prospect areas, suggesting mineralisation is not confined to a single narrow corridor but potentially extends across a sizeable system.

In addition, several investment considerations stand out:

• Multi-commodity exposure: A single project offering exposure to copper, gold, silver, antimony, cobalt, rhenium, molybdenum, and lead — several of which are classified as critical minerals
• Farm-in capital efficiency: AIS is funding exploration toward a C$4.4M spend target; Riversgold retains a free-carried 25% interest to mine
• Drill-ready status: A contractor is engaged and regulatory approval is in place for the maiden drill program
• Early-stage upside: With 92 surface samples now reported and surface mineralisation confirmed across multiple targets, the project is transitioning from target identification toward target testing
• Historical validation: Current results are consistent with and extend historical exploration data, lending credibility to the geological model

Regional Context and Strategic Location

The Riversgold Saint John project rock chip results in New Brunswick Canada are situated within southern New Brunswick's complex Appalachian geology, a region that hosts multiple deposit styles including volcanic-hosted massive sulphides, porphyry systems, and structurally controlled mineralisation. The area benefits from established mining heritage, with numerous historical showings and past-producing mines providing evidence of the region's mineral endowment.

Key locational advantages include:

• Infrastructure accessibility: Road access to all prospect areas
• Proximity to services: Industrial facilities and skilled workforce available regionally
• Tidewater access: Potential future logistics advantages for bulk commodity transport
• Regulatory environment: Mining-friendly Canadian jurisdiction with established permitting frameworks

The combination of favourable geology, established infrastructure, and regulatory certainty positions the Saint John Project within a jurisdiction that supports systematic exploration and potential future development.

"Riversgold Limited has positioned itself as an emerging multi-commodity explorer with genuine critical mineral exposure, underpinned by a capital-efficient farm-in structure that funds exploration at no cost to shareholders. With a contracted driller, regulatory approval in hand, and standout surface results — including multiple samples exceeding laboratory detection limits for copper, gold, silver, antimony, and lead — the Saint John Project is approaching a pivotal inflection point. As re-assay results and drilling news flow through, investors should monitor developments closely."

Important Note: Grab and chip rock samples are selective by nature and are not necessarily representative of average grade or mineralisation across the project. The results reported are preliminary and subject to re-assay for over-limit samples. The project remains at an early stage of exploration, and further work is required to determine the nature, continuity, and economic significance of mineralisation.

Ready to Learn More About Riversgold's Saint John Project?

Riversgold Limited (ASX: RGL) is advancing a compelling multi-commodity project in New Brunswick, Canada, with standout surface results, a capital-efficient farm-in structure, and a maiden drill programme now approved and contractor engaged. For investors seeking early-stage exposure to copper, gold, silver, antimony, and a suite of critical minerals — all within a single project — this is a story worth following closely. Visit www.riversgold.com.au to learn more about the company and the Saint John Project.