VKA Jumps 25%, LMS 12.5% as ASX Drill Results Land on Same Day

Two junior explorers on two continents delivered drilling wins on the same trading session, and both stocks moved hard. Viking Mines (VKA) climbed 25.0% and Litchfield Minerals (LMS) gained 12.5% on 24 September 2026, each on the back of fresh assay data from projects still at the earliest stage of the resource-definition process.

The pairing matters because of what each company is chasing. Viking is drilling for tungsten in Nevada, a metal flagged as strategically sensitive by both the US Geological Survey (USGS) and the European Commission, in a jurisdiction with strong domestic supply-chain policy behind it. Litchfield is advancing a copper-zinc-silver system in the Northern Territory that has returned steadily improving intercepts across multiple campaigns.

Both are micro-cap juniors, the kind of stocks where a single batch of assay results can reprice the shares within hours.

Here is what each set of drill results actually shows, what it does not yet confirm, and what investors watching these ASX junior explorers should focus on before the next round of data lands. This is a two-story briefing with an analytical layer, not a pair of announcement summaries.

Viking Mines confirms tungsten runs deeper than the 1950s miners got

Viking’s inaugural reverse circulation (RC) drilling campaign at Linka is doing something specific: testing whether tungsten mineralisation continues down-dip below underground workings last mined in the 1950s. The results have arrived in two batches, and each one has strengthened the geological case.

The first batch, reported on 10 September 2026, came from LKRC0002, the first hole into the historic mine area. It returned 14m at 0.56% WO₃ from 40m (true width approximately 9m), hosted in tactite, a skarn rock consistent with the company’s 3D geological model.

The follow-up holes, reported on 24 September 2026, were oriented specifically to test ground beneath the old stopes. Both hit thick tungsten zones.

• LKRC0002: 14m at 0.56% WO₃ from 40m, including 5m at 0.81% WO₃ and a peak single-metre assay of 1.18% WO₃
• LKRC0005: 18m at 0.42% WO₃ from 62m (true width approximately 16m)
• LKRC0006: 13m at 0.46% WO₃ from 70m (true width approximately 11m)

Shortwave UV logging of the RC chips also flagged visible scheelite (a tungsten-bearing mineral) in LKRC0005, with a combined 22m of scheelite-bearing intervals over a 24m horizon from 55m, and several “very strong” UV responses. That is an encouraging spatial indicator, but UV logging is not a substitute for laboratory assays, and the abundance estimates of roughly 0.1% to 1.5% scheelite remain non-definitive until formal results confirm them.

What ties the batches together is grade consistency. The tungsten coming out of modern drilling below the historic workings sits in a range comparable to what was extracted when the mine was active.

“The grades returned are consistent with the operational period of the historic Linka Mine,” said Julian Woodcock, Managing Director and Chief Executive Officer of Viking Mines, who also noted that holes positioned above the historic stopes returned tungsten.

That matters because it tells investors the mineralised system has spatial continuity below what earlier miners exploited. Historical context supports the framing: rock-dump assays at Linka reached up to 1.8% WO₃, and tailings testwork produced a 56.9% WO₃ concentrate at 76% recovery.

The important caveat is that no JORC resource has been defined. A JORC resource is a mineral concentration with reasonable prospects for eventual economic extraction, classified by confidence level. Without one, the question of economic scale is still entirely open, and the RC program does not resume until mid-October 2026.

Tungsten’s critical-mineral status is doing part of the work here. Global mine supply is heavily concentrated in China, with smaller volumes from Russia and Vietnam, so a Nevada discovery carries a strategic narrative that amplifies attention beyond the grades alone. The 25% move reflects both the data and the geopolitical framing.

Critical minerals supply dynamics in 2026 are being shaped by energy transition demand and geopolitical concentration, with tungsten’s heavy reliance on Chinese mine output sitting alongside copper’s role in electrification infrastructure as two of the more strategically exposed commodities in the current cycle.

Litchfield’s Oonagalabi keeps delivering, and the next drill rig arrives in days

Litchfield’s results land differently because they build on a track record. The Oonagalabi project in the Northern Territory has moved through several campaigns since a 2025 RC program first tested induced polarisation (IP) anomalies, geophysical targets that flag potential mineralisation, and returned broad, low-grade copper-zinc zones.

The Oonagalabi discovery history extends back to a 2025 RC program that first tested induced polarisation anomalies, giving Phase 3’s deeper and higher-grade intercepts meaningful geological context that a single campaign result cannot provide on its own.

Phase 3 sharpened that picture considerably. Comprising 11 RC holes and three diamond holes, it delivered deeper and higher-grade intervals than anything reported earlier.

The standout came from a diamond hole roughly 100m west of the main RC hole: 68.26m at 0.62% Cu, 1.44% Zn and 4.3 g/t Ag from 10m, including a richer 19.66m sub-interval at 0.66% Cu, 2.58% Zn and 5.6 g/t Ag.

One data point deserves a flag. The Sydney Morning Herald reported the silver grade on the 120m main-zone interval as 41 g/t Ag, while the corrected figure is 4.1 g/t Ag. The underlying ASX announcement is the authoritative source, and the lower figure is used here pending direct verification.

Assay verification standards in junior exploration programmes govern how samples are logged, split, and dispatched to independent laboratories, and the silver-grade discrepancy flagged in Litchfield’s announcement illustrates precisely why primary ASX releases rather than media reports should be treated as the authoritative data source.

The southwest RC hole is arguably the most economically interesting. It returned 50m at 0.47% Cu, 1.36% Zn and 4.2 g/t Ag from just 2m depth. An intercept starting at 2m tells you the copper-zinc system reaches close to surface, which matters for any future development economics, while the 120m main-zone interval signals genuine lateral and vertical scale.

The next catalyst is imminent. Litchfield has engaged Topdrill for a follow-up campaign targeting extensions to the southwest and refining the structural controls that shape the deposit.

Next drill program An 11-hole, 1,820m program, with holes to 200m depth, commences 8 October 2026. Managing Director Matthew Pustahya described it as building on prior work at the site.

As with Viking, no JORC resource has been defined for the Oonagalabi intercepts. The share price move on 24 September is therefore as much about anticipated news flow as about the Phase 3 data itself, because the next batch of results is only weeks away.

What single-session share price spikes in micro-cap explorers actually tell you

Step back from the individual stories and VKA and LMS start to look like instances of a repeating pattern rather than two isolated events. Sharp single-day moves in junior explorers tend to have the same structural drivers.

• New drill results showing greater grade, width or continuity than expected, especially near surface or below historic workings
• Re-rating catalysts such as maiden resources or entry into a high-profile critical-minerals narrative
• Thin liquidity, where modest absolute buying translates into large percentage gains in a micro-cap
• News-flow clustering, when several positive announcements arrive close together

All four were in play on 24 September 2026. Both companies delivered data ahead of prior expectations, both carry a commodity narrative (tungsten with its China-concentrated supply, copper-zinc in a strong base-metals demand environment), and the two announcements clustered into a single session.

The context worth holding onto is what these moves are not. Neither company has defined a JORC resource. Visual UV logging at Linka is not equivalent to assays. The silver-grade discrepancy in the Oonagalabi data still needs checking against the primary ASX release.

A 25% move on an explorer with no defined resource and pending assay batches is not a verdict on the project’s final economics. It is the market pricing the probability that the next batch of data stays on its current trajectory, and that probability shifts with every hole.

That is the useful framework: distinguishing a genuine re-rating from a short-term speculative surge driven by thin liquidity and narrative momentum. For copper-zinc systems at this stage, the path from initial intercepts to a maiden JORC resource typically runs 12 to 36 months, depending on infill drilling density, geometry, metallurgy and funding.

The JORC Code reporting standards set the minimum requirements for public disclosure of exploration results, mineral resources, and ore reserves in Australia, establishing the classification framework that separates an Inferred resource from an Indicated or Measured one, and requiring independent competent person sign-off before any estimate can be released to market.

What the next six weeks will show about whether today’s moves were justified

Both companies sit at the same kind of inflection point. The next campaign will either extend the mineralised footprint meaningfully or expose geological complexity that tempers the current enthusiasm, and the two catalysts are close together on the calendar.

1. Viking Mines: the RC program at Linka resumes mid-October 2026, with further assay batches pending from holes already drilled.
2. Litchfield Minerals: the 11-hole, 1,820m program commences 8 October 2026, testing southwest extensions to 200m depth, with results expected within weeks of completion.

Tungsten’s critical-mineral designation and copper-zinc’s role in electrification infrastructure provide durable thematic tailwinds. But a narrative does not substitute for the geological and economic confirmation that only successive drilling and eventual resource definition can deliver.

Both companies now have enough evidence to sustain investor attention through the next campaign. Neither has crossed the threshold where that attention rests on a defined resource rather than exploration optionality.

Anyone who bought the 24 September announcement is essentially holding a position on the continuity of drill data over the next six to twelve weeks. If Viking’s resumed RC holes and Litchfield’s southwest extensions keep delivering consistent results, the geological case strengthens materially. If they do not, today’s gains will read as typical micro-cap news-flow trading rather than fundamental re-rating.

Investors exploring how to size positions in stocks like VKA and LMS without needing to forecast drill outcomes will find our dedicated guide to junior resource investing strategy useful, particularly its framework for managing exploration optionality without relying on point predictions.

This article is for informational purposes only and should not be considered financial advice. Investors should conduct their own research and consult with financial professionals before making investment decisions. Past performance does not guarantee future results, and exploration results are speculative and subject to change based on further drilling and market developments.