Terrain Minerals’ Lightning prospect, which forms part of its Smokebush gold project, has burst to life, with a set of cracking gold hits fuelling confidence the system is bigger than first thought and primed to grow along strike and at depth.
The company’s progressive build-up to a concerted drilling effort 350km north of Perth in WA’s Mid West appears to have been well worth the wait.
The current program has delivered a suite of mouth-watering gold results, including a best run of 8m in one hole assaying 6.87 grams per tonne (g/t) gold from 76m, featuring a 5-metre section running at a hefty 10.06g/t gold.
A second hole intercepted 7m at 7.08g/t gold from 217m, including 1m at a sizzling 21.80g/t gold, backed up by a third hole, which bored out 1m at an eye-catching 12.29g/t gold within a broader 11-metre run grading 2.61g/t gold from 86m.
A fourth hole among the top contenders reported by the company delivered 5m at 3.26g/t gold from 196m, sweetened by a 1-metre slice going 11.81g/t gold.
A spread of other lower-grade, although meaningful, intervals delivered a widening footprint that looks as if they could easily be added to “the zone” or are certainly close enough to it to justify further investigation. The numbers also indicate a system that has potential for both strike and depth extension.
The latest results relate to 29 reverse-circulation (RC) holes for 5309m drilled between November 2025 and February 2026.
Terrain Minerals executive director Justin Virgin said: "These results are exactly what we expected to see. The drilling has confirmed that the high-grade gold mineralisation at Lightning extends along strike and at depth, with multiple holes returning wide, high-grade intercepts across the Lightning gold system.”
The results are the kind of outcome Terrain has long envisioned and quietly been building towards for months. Its path to this point has involved gradual tightening of the model, before finally leaning into deeper and broader testwork for ongoing encouragement.
So far, the drill bit has been delivering the goods, with the company steadily peeling back the layers on what could shape into a much larger system.
Intriguingly, the company says assays from the bottom of several holes hint at a possible third mineralised structure beneath the main Lightning lens. Should this turn out to be the case, it could appreciably broaden the system beyond the company’s current two-structure focus and firmly justify a fresh round of targeted follow-up drilling.
Terrain’s interpretation builds on a year of work during which induced polarisation (IP) geophysics and systematic drilling initially outlined the main Lightning structure and a parallel Monza structure 50m to the east, with both structures still open along strike and at depth.
The results mark a significant payoff from a drilling campaign that Terrain restarted at the start of the year, later bolstered with four diamond holes in early February to gather rock density data and the finer geological detail needed to underpin a maiden resource.
By early March, the company had wrapped a broader 7739m RC and diamond drilling program across both of its Lightning and nearby Wildflower prospects. The work has teed up a steady stream of assays, sharpening the geological picture as the company barrels toward its July resource deadline.
Terrain’s confidence in the project appears reflected in its recent mining lease grant over the Lightning system and a growing drilling dataset that now totals 97 reverse-circulation holes and 4 diamond holes, for an estimated 16,000m of drilling.
The company says typical grades across the system have been in the 1g/t to 8g/t gold range, between 1m and 11m wide, with occasional high-grade shoots punching well above that within the broader mineralised envelope.
Notable previously reported intercepts from drilling in September last year have helped to drive the company’s most recent modelling and drilling imperatives, including results from four holes in particular. They comprise 13m assaying 8.13g/t gold, 11m going 6.03g/t gold, coupled with 43.5g/t silver, 22m running 2.71 g/t gold and 17m grading 3.43g/t gold.
Additionally, there are more diamond-core assays waiting in the wings, so Terrain should have plenty of ammo for its next round of updates.
If the pending diamond core results back up the RC grades and confirm a third structure alongside Lightning and Monza, the overall project could be well on the way to becoming a much bigger system than the current two-structure narrative.
With a mining lease already secured and a maiden JORC resource firmly in its sights for July, Terrain appears to have all the pieces falling into place at Smokebush.
Backed by a steady stream of strong drill hits, the company is now gearing up for its next round of step-out drilling, aiming to stretch Lightning’s footprint even further and keep the growth story humming.
Is your ASX-listed company doing something interesting? Contact: matt.birney@businessnews.com.au
By Doug Bright
