Gateway Mining has accelerated its exploration at the Yandal Gold Project, delivering multiple new gold discoveries and expanding drilling programs that reinforce the project's growing potential.
- Over 52,000m drilled at Yandal in June quarter
- New gold discoveries at Cowza, Haflinger, Great Western, Celia South
- RC drilling underway to define mineralised footprints
- Great Western shows rare high-grade silver alongside gold
- Strong cash position of $15.1 million supports 2026 exploration
Drilling Surge Unveils Multiple Gold Discoveries at Yandal
Gateway Mining Limited (ASX:GML) has rapidly expanded its footprint at the Yandal Gold Project, completing over 52,000 metres of drilling during the June 2026 quarter. The company’s systematic aircore programs have uncovered a string of new gold discoveries including Cowza, Haflinger, Great Western, Celia South, Hummer, Rubicon, and Mustang. These findings underscore the scale of the mineralised system and provide fresh targets for follow-up drilling.
Importantly, the company has now commenced reverse circulation (RC) drilling, focusing on delineating the size and grade continuity of mineralised zones at Cowza, Haflinger, Great Western, and Celia South. Both RC rigs are currently active at Cowza, aiming to define the extent of high-grade gold mineralisation along the structurally complex mafic-intermediate volcanic contact, a key control noted elsewhere in the Yandal belt.
Cowza Emerges as a Major New Gold System
Initial drilling at Cowza has confirmed a significant high-grade gold discovery. The emerging structural setting recalls Strickland Metals’ 2022 Wanamaker discovery near Millrose, but Gateway now believes Cowza is substantially larger. Recent intercepts include standout results such as 7 metres at 22.2 grams per tonne gold from 72 metres and 2 metres at 11.3 grams per tonne from 86 metres. The discovery has extended the known strike length to at least 3.5 kilometres, with mineralisation remaining open along strike and at depth, supported by ongoing RC drilling to test fresh rock mineralisation second RC rig deployed at Cowza.
Expanding High-Grade Trends at Haflinger and Celia South
At Celia South, first-pass drilling has delineated a roughly 5-kilometre mineralised trend with widespread high-grade gold mineralisation extending some 20 kilometres south of Haflinger. This highlights a previously underexplored corridor along the mafic-intermediate contact, reinforcing the district-scale potential.
Haflinger continues to impress with oxide gold mineralisation defined over approximately 4 kilometres of strike. Recent intercepts confirm significant southward extensions along the Celia Shear structure, with multiple stacked lodes evident in broader shear zones. Notable intercepts include 64 metres at 1.2 grams per tonne gold, including 24 metres at 2.4 grams per tonne. The presence of primary mineralisation at depth supports the interpretation of a large-scale, structurally controlled system with substantial upside.
Great Western Reveals Rare Silver Anomalism in a Multi-Pulse Hydrothermal System
Maiden aircore drilling at Great Western has confirmed gold mineralisation along a 4-kilometre strike at a major flexure zone within the dolerite and intermediate volcanics. The mineralisation sits within a broader hydrothermal system traceable over approximately 10 kilometres. A striking feature is the high-grade silver anomalism distal to the gold-rich core, with assays up to 89 grams per tonne silver recorded. This represents the highest silver grades recorded to date within Archaean lithologies at Yandal and may act as a vertical vector to deeper primary gold mineralisation.
The mineralisation style and zonation at Great Western are consistent with large dolerite-hosted gold systems in the Eastern Goldfields, such as Golden Mile, where repeated fluid pulses and competency contrasts focus gold deposition. The results confirm Great Western as a structurally complex, long-lived hydrothermal system with significant exploration upside initial aircore drilling at Great Western.
Broader Project Portfolio and Financial Position
Beyond Yandal, Gateway is advancing evaluation at the Glenburgh South Project, adjacent to Benz Mining’s Glenburgh Gold Deposit, with high-resolution magnetic surveys confirming extensions of prospective geology. Soil sampling, mapping, and rock chip sampling are scheduled for the September quarter to mature drill targets.
The company also holds significant land in the Montague Range and Barrelmaker Projects near Sandstone, covering approximately 1,000 square kilometres of the Gum Creek Greenstone Belt. Historical drilling here is considered sub-optimal, and Gateway is reviewing data to plan first-pass drilling before year-end.
Gateway ended the quarter with $15.1 million in cash and liquid securities, well positioned to fund its aggressive 2026 exploration program. Exploration expenditure for the quarter was $4.33 million, focused primarily on Yandal and other Western Australian projects. No mining development or production activities were conducted during the quarter.
Bottom Line?
Gateway’s expanding drilling and multiple new discoveries at Yandal signal a growing gold system, but ongoing RC results will be crucial to define resource scale and grade continuity.
Questions in the middle?
- How will upcoming RC drilling results at Cowza and Great Western influence resource estimates?
- Can the high-grade silver anomalism at Great Western lead to new exploration vectors for gold at depth?
- What impact will the Glenburgh South and Sandstone projects have on Gateway’s medium-term growth strategy?