Lefroy Exploration (ASX:LEX) Burns Gold Deposit metallurgical results, Lefroy Gold Project, Western Australia

Lefroy Exploration has reported metallurgical test work results from the Burns Gold Deposit within the Lefroy Gold Project in Western Australia, alongside drilling and resource update activities associated with the high-grade zone.

The Company states that the metallurgical program was undertaken on composite samples derived from drilling and forms part of ongoing technical work supporting a planned mineral resource update targeted for completion before the end of the September quarter.

Highlights

• Metallurgical test work completed on composite samples from Burns Gold Deposit
• Gravity gold recoveries reported between 38% and 57% across composite samples
• Overall gold recoveries of up to 97% reported in oxide and fresh material under cyanide leach conditions
• Transitional material reported lower recoveries under initial conditions with variability across test work
• Fresh rock material accounts for 66% of the high-grade mineral resource
• Oxide and transitional material account for 29% and 5% respectively
• Mineral resource update for Burns high-grade zone targeted before end of September quarter

The Burns Gold Deposit is located within the Lefroy Gold Project in the Eastern Goldfields region of Western Australia, approximately 70km southeast of Kalgoorlie.

The Company reports that the deposit is part of a broader multi-deposit system within the project area and forms the focus of ongoing drilling and technical studies.

Lefroy Exploration states that metallurgical test work was completed by Independent Metallurgical Operations Pty Ltd on composite samples derived from diamond drilling and reverse circulation drilling.

The work included gravity separation and cyanide leach testing across oxide, transitional and fresh rock material from the high-grade zone of the deposit.

The Company reports gravity gold recoveries ranging from 38% to 57% across the composite samples tested, and following gravity separation, cyanide leach tests returned overall gold recoveries of up to 97% in oxide and fresh rock material under the conditions applied in the test work, while transitional material reported lower recoveries in initial test conditions, with variation noted across sample types.

Lefroy Exploration Managing Director Graeme Gribbin stated in the announcement:

“The robust gold recoveries demonstrated from this recent round of metallurgical test work further supports the potential for the high-grade ore zones within the Burns Deposit to be part of a future gold production centre for Lefroy.”

The Company reports that cyanide consumption and recovery performance varied across different mineralogical domains within the deposit, with fresh rock material accounting for 66% of the high-grade mineral resource, while oxide and transitional material account for 29% and 5% respectively, as stated in the announcement.

The metallurgical program was undertaken alongside drilling activities designed to provide material for testing and support ongoing geological and technical work.

The Company also states that re-domaining of existing wireframes will commence, incorporating metallurgical and mineralogical data from the current program.

Lefroy Exploration states that an updated mineral resource estimate for the Burns high-grade zone is targeted for completion before the end of the September quarter.

The Company also notes that ongoing drilling and metallurgical test work will continue to inform its technical dataset as results are received and incorporated into future updates.

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