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Core Energy Minerals adds prospective Brooker tenement to flagship Cummins uranium project

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By Imelda Cotton - 
Core Energy Minerals ASX CR3 Cummins expansion Brooker project tenement
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Core Energy Minerals (ASX: CR3) has added 517 square kilometres of prospective uranium tenure to the east of its flagship Cummins project in South Australia following the approval of a tenement application for the Brooker project.

The Brooker project secures more of the western margin of the Port Lincoln Uplands (Koppio Hills), which has numerous uraniferous granite source rocks and uranium occurrences such as Mount Hill, located approximately 12 kilometres to the east.

The new tenement takes Core’s total landholding in South Australia to 4,587 sq km, comprising 2,837 sq km over the Eyre Peninsula and 1,750 sq km within the central Gawler Craton.

New tenement

The new area contains an interpreted extension of palaeochannel fluid pathways that contain uranium mineralisation.

Core Energy believes these represent a low-cost addition to the company’s portfolio.

Limited past drilling across the area identified carbonaceous Tertiary sediments ideal for uranium mineralisation accumulation.

Maiden campaign

Core has planned the maiden drilling of 50 aircore holes for a total 3,000m to test high-priority target areas at Cummins, including Brooker.

The aircore format – which the company had previously used at its Western Eyre Peninsula project in 2021 – was selected for its speed and efficiency, quality of samples, cost-effectiveness and low environmental footprint.

Core will include an additional 177 holes in the regulatory approvals application to allow for a second rapid follow-up campaign at Cummins.

Drilling approvals

Core executive director Tony Greenaway said planning for the campaign was well underway.

“We have submitted all the necessary approvals with the aim of testing several compelling targets and we have included a significant number of additional holes for follow-up drilling,” he said.

“We expect the first holes will target coincident analytical and geophysical gamma anomalies identified through the re-interpretation of historic data.”

Tier 1 district

The Cummins project is located in a Tier 1 exploration and mining district long considered Australia’s most supportive uranium mining jurisdiction.

The Eyre Peninsula is one of the state’s highest radiometric regions and is host to numerous known uranium occurrences and deposits.

This includes the Samphire project owned by Alligator Energy (ASX: AGE).