Litchfield Minerals Tests New Exploration Framework with Oonagalabi and Silver Valley Geophysical Surveys

Litchfield Minerals (ASX: LMS) will launch three ground geophysical surveys next month, marking the next phase of testing a new exploration framework across its Northern Territory portfolio.

A combined magnetotelluric and gravity survey will test the western group of tenements near the Oonagalabi project in the Harts Range corridor, with a view to better defining the geometry beneath shallow cover and refining priority exploration targets.

Previous work in this area identified a conductivity anomaly at approximately 2.5 kilometres depth.

An induced polarisation survey will be carried out at the Silver Valley project in the southern Davenport Province which hosts epigenetic, structurally controlled, quartz-vein hosted silver-lead-copper mineralisation within the Murray Downs Dome

Reconnaissance rock chip sampling at Silver Valley returned assays up to 378 grams per tonne silver, 0.9g/t gold, 5.04% copper, and 44.9% lead.

BHP Xplor Framework

Planetary Geophysics and Australian Geophysical Services have been engaged to conduct the surveys, which represent the first field-based tests of a belt-scale mineral systems framework developed through participation in the BHP Xplor Program.

The framework considers the broader Aileron-Irindina corridor in Harts Range — which spans extensive regions rich in copper, zinc, nickel and gold — as an integrated mineral system rather than evaluating individual prospects in isolation.

The MT and gravity survey have been designed to build on the proven deep-imaging approach Litchfield previously used to extend comparable subsurface coverage across its tenure.

They will be supported by up to $100,000 in co-funding from the Northern Territory Geological Survey, with first results expected from Silver Valley by the end of July.

Improved Gelogical Certainty

Managing director Matthew Pustahya said the surveys would validate the geological model in the field, reduce geological uncertainty, and refine priority exploration targets to support future drilling.

“The completion of our mineral systems framework marked an important milestone for Litchfield—this next phase is about testing that model in the field and using the results to progressively refine our exploration targets across Harts Range and Silver Valley,” he said.

“By investing in high-quality geological and geophysical data, we are building a stronger technical foundation for future exploration.”

“This systematic approach will help us better understand the geology, reduce exploration risk, and ensure capital is directed to the highest-priority opportunities.”