Anson Resources Confirms Lithium Brines at Mt Fuel-Skyline Geyser Well

Anson Advances Lithium Exploration in Utah

Anson Resources Limited (ASX, ASN) has reported a significant milestone in its Green River Lithium Project with the intersection of the Mississippian horizon at 9,189 feet depth in the Mt Fuel-Skyline Geyser well, located in southeastern Utah. This well, part of a re-entry drilling program, has yielded promising signs of lithium-rich brines, a key ingredient for the company’s ambitions to develop a substantial lithium resource in the Paradox Basin.

Sampling Confirms Lithium Potential

During drilling, Anson detected chlorides entering the oil-based muds used to safely manage high-pressure zones, prompting the collection of fluid samples. These brine samples are currently being assayed to confirm lithium concentrations. Early indications suggest the brines share a similar geochemical profile to those found in the nearby Bosydaba well, drilled 12 kilometres north, which has already demonstrated lithium mineralisation.

Upgrading the JORC Resource

The primary objective of this drilling and sampling program is to upgrade the existing large Exploration Target into more defined Indicated and Inferred Resources under the JORC Code. This would provide a more robust and investable resource estimate, critical for advancing the project towards development. The Green River area historically lacked lithium assay data, but recent drilling and historical oil and gas wells have revealed supersaturated brines, reinforcing the region’s potential as a lithium brine source.

Strategic Importance of the Paradox Basin

The Paradox Basin’s geological setting, characterised by evaporite sequences and permeable dolomite sediments, is conducive to hosting lithium-bearing brines. Anson’s Green River Lithium Project covers nearly 6,000 hectares and includes private land holdings and leases, all held through its US subsidiary. The company’s systematic approach to sampling, including rigorous quality control and certified laboratory assays, aims to build confidence in the resource’s scale and quality.

Looking Ahead

With the Mt Fuel-Skyline Geyser well intersecting the target horizon and initial fluid samples collected, Anson is poised to deliver assay results that could materially enhance its lithium resource base. This progress aligns with the company’s broader strategy to establish itself as a significant lithium producer, meeting growing demand driven by the global transition to electric vehicles and renewable energy technologies.