Untested 2km BIF Corridor at Brunswick Hill Poses Exploration Risk and Opportunity

Emerging Gold Model at Brunswick Hill

Austin Metals Limited (ASX, AYT) has provided an insightful update on its evolving exploration strategy at the Brunswick Hill Prospect, part of its expansive Austin Gold Project in Western Australia's prolific Murchison Goldfields. The company is advancing a Vadrians-style Banded Iron Formation (BIF)-hosted gold model, a geological framework that has proven successful in nearby deposits such as Vadrians, Comet, and Tuckabianna.

Recent drilling results, though previously reported, continue to validate this model. Notably, shallow high-grade intercepts such as 2 metres at 10.3 grams per tonne gold from 62 metres and 6 metres at 3.5 grams per tonne gold from 65 metres (including 1 metre at 17.1 grams per tonne) highlight the prospectivity of the Brunswick Hill BIF corridor.

Underexplored Potential Along Extensive BIF Strike

The Brunswick Hill BIF corridor extends over 2 kilometres, yet only about 500 metres have been partially tested by drilling to date. This leaves a significant portion of the prospective iron-rich rock units unexamined, offering a substantial opportunity for new discoveries. The company’s geological model emphasizes oxide-facies jaspilite and magnetite–chert BIF as the most favourable hosts for gold mineralisation, particularly where these units are structurally thickened, folded, or intersected by faults.

Gold mineralisation at Brunswick Hill is interpreted to be epigenetic and structurally controlled, occurring within sulphidised BIF and quartz vein sets. The alteration process involves sulphide replacement of magnetite by pyrrhotite, a key vector for locating mineralisation. This sulphide alteration, combined with structural intersections, guides Austin Metals’ targeting approach.

Strategic Exploration Plans for 2026

Looking ahead, Austin Metals plans a staged exploration program in early 2026. This will begin with detailed geophysical interpretation and ground truthing to refine the understanding of magnetite-rich BIF facies and structural breaks. The field team will conduct mapping and sampling campaigns to validate fault zones and hydrothermal alteration signatures.

Following this, the company will prioritize targets within the largely untested Eastern Contact Zone and along strike and down-plunge extensions. Systematic drilling of these ranked targets aims to test both strike continuity and depth potential, advancing the project toward resource definition.

Context Within the Murchison Goldfields

Austin Metals’ Austin Gold Project benefits from its location in the Murchison greenstone province, a region renowned for high-grade gold deposits. The project neighbours significant operations such as Ramelius Resources’ Cue Gold Project and Caprice Resources’ Island Gold Project, which includes the recently discovered Vadrians deposit. The application of a Vadrians-style BIF-hosted gold model at Brunswick Hill aligns Austin Metals with proven geological analogues, enhancing confidence in the prospect’s potential.