High-Grade Tin at Mt Garnet Spurs Urgent Drilling Plans Amid Untested Targets

Exceptional Surface Grades Signal Potential

Koba Resources Limited (ASX – KOB) has unveiled highly encouraging exploration results from its Mt Garnet Tin-Tungsten Project in Queensland, with rock chip sampling returning tin assays as high as 21.3%. These grades are notably significant in the context of tin exploration, suggesting the presence of rich mineralisation near surface.

The standout results come from the Stannex Prospect, where a substantial 2km by 0.5km tin-in-soil geochemical anomaly has been identified. This anomaly, which remains open along strike, has seen only minimal historical drilling, just six holes, highlighting the prospect’s underexplored nature and considerable upside potential.

Historical Context and New Insights

The Stannex Prospect lies adjacent to the Gilmore Tin Mine, historically the largest tin producer on Koba’s tenure, with reported production of over 26,000 tonnes of ore grading 7.6% tin. Past drilling at Stannex intersected both high-grade and bulk-tonnage mineralisation, but follow-up work was never conducted. Koba’s recent sampling confirms that high-grade tin mineralisation is widespread across this anomaly, with assays including 13.9%, 8.8%, and 7.1% tin, alongside notable tungsten and silver values.

These findings not only validate historical geochemical anomalies but also suggest that the mineralisation extends beyond previously tested areas. The company is mobilising a soil sampling crew to extend the known anomaly and refine drill targets ahead of planned drilling in early 2026.

Expanding Exploration Pipeline

Beyond Mt Garnet, Koba is advancing reconnaissance work at the Stannary Hills Tin-Tungsten Project, with 55 rock chip samples submitted for assay and results expected in January 2026. The company is also targeting other prospects such as Brownville and General Gordon, where initial sampling has returned promising tin grades up to 7.3%.

Systematic soil sampling programs are underway or planned to delineate additional drill targets, particularly along the Kitchener trend at Stannary Hills, which hosts multiple historical high-grade tin mines. Koba intends to employ geophysical techniques like induced polarisation surveys to further prioritise targets.

Looking Ahead to Drilling and Resource Definition

With a clear forward work plan, Koba aims to commence maiden drilling at its highest priority targets in March 2026, following the wet season. The company’s Managing Director, Ben Vallerine, expressed confidence that the combination of high-grade surface mineralisation and underexplored geology positions Koba well to make significant discoveries that could underpin a future resource.

While these early-stage results are promising, the economic viability and scale of mineralisation remain to be established through drilling and subsequent resource estimation. Investors will be watching closely as Koba progresses from surface sampling to drilling and resource definition over the coming months.