Innovative Endeavors by Mamba Exploration (ASX: M24) Illuminate Progress in Leaching Studies at the Rare Earth Elements (REE) Hyden Project situated in Western Australia. Initial tests have showcased the viability of leaching processes, accompanied by diverse outcomes from the leach tests conducted on the clay hosted REE samples. Notably, a particular zone has exhibited exceptionally positive indicators within this array of results.
Exploring Leach Results from the South
At the heart of this development lies the Southern area of the Hyden project, situated approximately 300km east of Perth in the Wheatbelt region of Western Australia. Initial leach examinations conducted in this region have yielded remarkable results, with recovery rate values surging up to 70% of the total rare earth oxides, excluding cerium (TREE-Ce). This achievement underscores the potential of the greenstone hosted mineralization within the Southern area to undergo effective leaching.
Striking Variability Yet Progressive Discoveries
Diversity characterises the outcomes of these leach tests, as revealed through a series of variable results. A fascinating point of note is the considerable variation in results across the initial clay testing within the target zone. Here, the rates ranged widely, reaching a peak of 19.3% TREE-Ce. Conversely, outcomes from the Northern region presented significantly lower percentages, remaining below the 5% mark.
Chairman’s Insight and Forward Steps
Chairman Justin Boylson underscored the significance of the leaching tests in uncovering pivotal insights. Commenting on the results, Boylson highlighted the evidence of effective leaching capabilities within the greenstone hosted mineralization of the Southern area. These tests demonstrated the potential for recovery rates to surge up to an impressive 70.6% through a relatively straightforward acid leaching process. Notably, the recoverability of the granite and felsic hosted mineralization remained limited. To further delve into the intricate mineralogy, Boylson revealed plans for additional research aimed at determining the REE mineral sources.
Progressive Endeavors and Methodology
The comprehensive drilling campaign conducted at the Hyden project concluded in late May, preceding the submission of metallurgical samples for laboratory analysis. This analysis was centered on nine selectively chosen samples, spanning an expansive area of 2,300 meters by 2,100 meters. These samples were meticulously chosen to encompass a wide spectrum of rock formations and geographic locations across the project. Two distinct leach solutions were employed for the tests: a weak hydrochloric acid leach and an ammonium sulfate-based solution.
Mapping the Path Forward
Mamba Exploration’s journey in unraveling the mineralogical intricacies and the roots of REE mineralisation continues with a proactive approach. The company has outlined plans for further test work, with the objective of achieving a comprehensive comprehension of the underlying mineralogy and the origins of REE mineralization. This strategic course of action exemplifies Mamba Exploration’s commitment to meticulously navigate the intricacies of REE extraction and sustainable resource management.
