Chilwa Minerals (ASX: CHW) Hits Extraordinary 385m Continuous Niobium Strike from Surface in Malawi

Key Highlights

• Chilwa Minerals (ASX: CHW) intersects 385.4m of continuous niobium mineralisation from surface
• Drillhole MPYDD009 extends the Nakombe footprint 180m north of the original discovery
• Higher-grade zones include 60.5m at 0.24% Nb₂O₅ from surface
• Mineralisation remains open in multiple directions and at depth
• Laboratory assays pending, with historical pXRF data suggesting grades may improve further

Malawi niobium discovery continues to widen

Chilwa Minerals (ASX: CHW) has delivered another major drilling result from its Lake Chilwa project in southern Malawi, intersecting 385.4 metres of continuous niobium mineralisation from surface at the Nakombe target.

The result from drillhole MPYDD009 stretches to the end of the hole and further expands what is quickly becoming one of the more closely watched emerging niobium systems on the ASX.

Shares in Chilwa Minerals were trading at 93 cents on Tuesday afternoon, with the company carrying a market capitalisation of roughly $91 million.

Source: MarketIndex 

The latest drilling also pushes the mineralised footprint 180 metres north of the original discovery hole MPYDD006, which previously returned 126 metres at 0.31% Nb₂O₅.

Within the new intercept, Chilwa identified several higher-grade zones, including 60.5 metres at 0.24% Nb₂O₅ from surface, alongside narrower intervals reaching 0.34% Nb₂O₅ and a peak two-metre section grading 0.39% Nb₂O₅.

Importantly for geologists and mining engineers alike, the mineralisation begins at surface and remains open in multiple directions.

A system still growing

The broader Nakombe target is still in its early stages of definition.

To date, Chilwa has drilled roughly 1,550 metres across eight holes within the southern Nakombe zone, while two diamond rigs continue operating on site. Management is also reviewing the addition of a third rig during Malawi’s dry-season exploration window.

Initial geological logging suggests the company may be drilling into a large intrusive pipe-like system plunging south or southwest.

Airborne magnetic surveys are adding further intrigue.

According to the company, the magnetic signature across the target resembles patterns observed at the nearby Songwe Hill rare earth project, around 50 kilometres away, where magnetite alteration is associated with rare earth and niobium mineralisation.

The result is also notable because the grades currently being reported are based on the company’s internal portable XRF analysis rather than final laboratory assays.

Historically, Chilwa says its pXRF readings have understated niobium grades by around 20% to 22% compared with certified laboratory results.

Full ICP-MS laboratory assays, including rare earth elements, tantalum and gallium, are still pending.

Critical minerals race broadens beyond lithium

Niobium has quietly become one of the more strategically important specialty metals as governments and manufacturers search for materials capable of improving battery performance, steel strength and aerospace applications.

The metal is widely used in high-strength steel alloys found in pipelines, transport infrastructure and defence systems. Demand has also increased within battery technologies, particularly for fast-charging lithium-ion chemistries.

Global niobium supply remains heavily concentrated.

Brazil dominates world production through CBMM’s Araxá operation, while Canada hosts the only significant large-scale producer outside South America. That concentration has prompted growing interest in emerging projects across Africa and Australia as supply chain diversification becomes a larger geopolitical priority.

For Chilwa, the niobium discovery adds another layer to what is already shaping into a broad multi-commodity critical minerals strategy.

Four projects under one licence

The company’s Lake Chilwa licence now hosts four separate exploration streams, including heavy mineral sands, ionic clay rare earths, carbonatite-hosted rare earth targets and the emerging Mpyupyu niobium discovery.

Management believes that combination is increasingly differentiating the project from more traditional single-commodity explorers.

Managing Director Cadell Buss described the latest drilling as exceptional.

“This is an outstanding result. 385 metres of continuous niobium mineralisation from surface is exceptional by any measure, and MPYDD009 materially extends the mineralised footprint at Nakombe to the north,” Buss said.

“Critically, the mineralisation starts at surface, runs the entire length of the hole, and remains open.”

“Combined with the significant work already completed on our Heavy Mineral Sands project, these Niobium results position Chilwa as a truly unique, multi-commodity critical minerals asset, all within a single contiguous licence in Southern Malawi.”

Catalyst pipeline builds

Attention now shifts toward the company’s next round of laboratory assays and an updated JORC resource estimate for its heavy mineral sands project expected later this month.

Additional assay results from drillholes MPYDD007 through MPYDD009 are also pending and could provide greater clarity around the scale and consistency of the broader system.

Long mineralised intervals beginning at surface tend to attract attention because they can support simpler open-pit mining scenarios if economic grades are confirmed over scale.

At Nakombe, the drilling footprint is still expanding.