Anson Resources Advances Lithium Quest by Re-entering Mt Fuel-Skyline Well

Anson Resources Targets Lithium Brines in Historic Well

Anson Resources Ltd (ASX: ASN) has taken a significant step forward in its lithium exploration efforts by submitting regulatory applications to re-enter the Mt Fuel-Skyline Geyser 1-25 well at its Green River Lithium Project in Utah, USA. The company aims to test for lithium-rich brines within geological formations that have historically shown promising characteristics for resource development.

The proposal includes a Plan of Operation to the US Department of Interior Bureau of Land Management and a Notice of Intent to the Utah Division of Oil, Gas and Mining. These filings mark the commencement of a drilling program designed to sample multiple horizons, including the Mississippian and Pennsylvanian units, which have recorded supersaturated brines but lacked prior lithium assays.

Building on Positive Historical and Recent Data

The Mt Fuel-Skyline Geyser well, originally drilled to a depth of 9,514 feet in 1973, encountered highly porous and permeable dolomite formations with significant brine volumes. While the initial drilling was focused on oil and gas, the presence of supersaturated brines and high reservoir pressures, between 4,800 and 5,100 psi, suggests a favorable environment for lithium extraction.

Anson’s recent drilling at the nearby Bosydaba#1 well confirmed lithium-rich brines, reinforcing the potential of the Green River project. The upcoming program will leverage these insights to sample targeted clastic zones and the Leadville Limestone, aiming to prove up a JORC-compliant Mineral Resource.

Environmental and Operational Efficiency

Importantly, the drilling will utilize the existing well pad and access roads, minimizing new ground disturbance and aligning with Anson’s commitment to sustainable development. This approach reduces environmental and social impacts, a critical consideration for projects in sensitive landscapes such as the Green River area.

The company’s strategy to re-enter a historic well rather than drill anew also promises cost efficiencies and faster progress toward resource definition. Downhole geophysical logs and historical drilling data will be integrated into geological models to optimize sampling and future extraction planning.

Implications for Lithium Supply and Company Prospects

If successful, this drilling program could significantly advance Anson’s Green River project, positioning it alongside its Paradox Lithium Project as a key player in the US lithium brine sector. The high permeability and reservoir pressure characteristics suggest that flow rates suitable for commercial lithium production may be achievable, potentially lowering operational costs and enhancing project economics.

As global demand for lithium intensifies amid the energy transition, projects like Green River that can deliver sustainable, high-quality lithium resources will attract investor and industry attention. Anson’s methodical approach to resource development underscores its ambition to create long-term shareholder value through strategic exploration and resource upgrading.