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Highlight
- Metallurgical testing at Magnetic Resources' Lady Julie North 4 increases gold recovery to 93% with flotation and fine grinding.
- The introduction of a cleaner circuit reduces concentrate mass, optimizing the process.
- Feasibility studies and deeper exploration aim at boosting production, enhancing economic value.
Magnetic Resources (ASX:MAU) has achieved a significant breakthrough in gold recovery at its Lady Julie North 4 deposit. By incorporating flotation and fine grinding into the metallurgical process, the company has boosted gold recoveries to an impressive 93% across various oxidation stages in seven composite samples.
Innovative Process Enhancements
The enhancements to the process—a result of the introduction of a cleaner circuit—have proven more effective than conventional methods, which averaged an 88% recovery. The cleaner circuit not only optimizes the recovery process but also reduces the concentrate mass, increasing the economic viability of the operation.
Notably, these improvements were achieved without a significant impact on the overall recovery when fine grinding was adjusted from 10 microns to 20 microns. This indicates the potential for a modular addition to the existing process plant, utilizing well-established technologies.
Lady Julie North 4: A Resource of Significant Potential
The Lady Julie North 4 deposit, part of the Lady Julie project, recently saw its resources upgraded to 23.6Mt at 2.04g/t gold. It plays a pivotal role in the broader resource framework of the project, which stands at 28.11Mt at 1.93g/t gold.
Recent diamond drilling has extended the known mineralization depth, providing further encouragement for the company's feasibility studies. The ongoing exploration and feasibility studies aim to incorporate open-pit and underground mining operations, promising a substantial addition to the project's value.
Economic Outlook and Broader Project Significance
According to the economic update from August 2024, the project's annual gold production is expected to reach 104,000 ounces over eight years, generating an estimated EBITDA of $1.49 billion. Development capital expenditure is projected at $111.3 million, with pre-tax net present value and internal rate of return pegged at $925 million and 135%, respectively.
Lady Julie North 4 forms part of a larger strategic area, the South Laverton project, known for its rich resource repository of 33.14Mt at 1.81g/t gold, representing significant development potential alongside established mines such as Granny Smith and Wallaby.
Magnetic Resources' advancements at Lady Julie North 4 position the company as a formidable contender within the mining sector on the ASX. The ongoing exploration and process optimization promise enhanced economic outcomes, furthering the company's prospects in the industry. As exploration continues, the potential for increased production and value remains promising.