Noronex Commences High-Resolution Exploration at Sleitat Tin Project

Modern Exploration Program Commences at Sleitat

Noronex Limited (ASX:NRX) has transitioned from acquisition to active exploration at its Sleitat Tin Project in Alaska, marking a significant step forward for the company’s rare US tin asset. The first detailed geophysical survey in two decades is underway, featuring helicopter-borne magnetic and radiometric data collected at an unprecedented 50-metre line spacing; a far cry from the one-mile spacing of previous government surveys. This leap in resolution promises a clearer picture of the project's complex greisen mineralisation system.

Expanding Beyond Historical Drilling Footprint

The Sleitat project, one of only two US tin deposits flagged by the US Geological Survey as potentially economic, has seen limited modern exploration. Historical drilling focused on a northern greisen zone, leaving the southern greisen and eastern margins underexplored. Noronex’s field program, commencing in early September, aims to systematically map and sample these areas, with particular attention on extending the known tin-bearing greisen system beyond the historically drilled footprint. Highlight drill intercepts from past campaigns include 29.1 metres at 1.56% tin and 28 g/t silver, with standout intervals such as 3.1 metres at 12.55% tin and 198 g/t silver, underscoring the deposit’s potential.

Integrating Historical Data with New Insights

Alongside new geophysical and surface sampling efforts, Noronex is conducting a detailed review of approximately 1,400 metres of historical drill core stored at the Alaska Geological Materials Center. This comprehensive approach aims to reconcile legacy data with fresh geological and geochemical information, enabling the construction of a robust three-dimensional geological model. The integrated dataset will underpin an updated JORC Exploration Target, expected by the end of 2026, and guide drill targeting for the maiden Noronex drilling campaign.

Pathway to Maiden Drilling and Resource Definition

The immediate goal of the ongoing program is to reduce geological uncertainties and confirm the extent of mineralisation, particularly in the southern and eastern greisen zones that remain untested by drilling. Results from the geophysical surveys, fieldwork, and core review will inform drill design and prioritise targets to test continuity and grade. Noronex plans to commence its first drilling phase in the 2027 field season, contingent on permitting, access, funding, and board approval.

Strategic Significance of Sleitat in Noronex’s Portfolio

The Sleitat acquisition, announced in July 2026, adds a rare US tin-tungsten-silver asset to Noronex’s growing portfolio, which also includes copper and uranium projects in Africa and Canada. The project’s location within the Bristol Bay Recording District and its status on State of Alaska mining claims provide a clear tenure framework, though future development will need to consider environmental factors such as caribou habitat and fisheries reserves. Noronex’s CEO James Thompson highlighted the transition from data review to active exploration as a pivotal moment, expressing optimism about uncovering a broader mineralised system than previously understood.