ABx group

ABx to absorb potential interest on how ionic adsorption clays are attractive mining propositions

ABx Group (ASX:ABX) is fresh off a Mineral Resource Estimate (MRE) at the rare earth elements (REE) deposit at the Deep Leads – Rubble Mound Project in northern Tasmania.

The company today is attending the RIU Sydney Resources Round-up to communicate with the market some of its recent successes including yesterday’s (8 May 2023) upgrade to a 21 million tonne resource.

Speaking to Mining.com.au ahead of his presentation on day 1 of the conference today (9 May 2023), ABx Group Managing Director and CEO Dr Mark Cooksey says his presentation will have plenty for existing and prospective investors to absorb.

One of the main themes to be covered is how ionic adsorption clays are attractive because of the higher proportion of heavy rare earths, particularly dysprosium and terbium, he tells this news service.

“Although the REE grades of different clay-hosted REE resources are similar, the pH required to achieve reasonable extraction of REE varies enormously. This has an enormous impact on production cost. It is plausible that it is only economic to extract REE using pH4 and above. If this is the case, then the ‘desorbable grades’ of different clay-hosted REE resources are very different.”

“the cost of producing REE from a clay-hosted project depends enormously on the pH required to obtain significant REE extraction”

The CEO adds that one main important message he hopes to convey to the RIU audience is that “pH is king”“the cost of producing REE from a clay-hosted project depends enormously on the pH required to obtain significant REE extraction”.

Cooksey notes that the RIU Sydney Resources Round-up is an opportunity for ABx to speak with current and prospective investors, as well as institutions, in a forum that allows longer, deeper discussions.

Yesterday (8 May), ABx reported an updated MRE that exceeds the 20 million tonne resource milestone for the rare earth elements (REE) deposit at the Deep Leads – Rubble Mound project in northern Tasmania.

As a result of the successes at Deep Leads and Rubble Mound and a new tenement application covering the prospective ground, ABx has applied for government approval and support for an exploration campaign to extend REE mineral resources a further 10-16km to the Wind Break REE discovery.

The interim MRE is based on 635 drillholes totalling 6,224m drilled and 2,893m assayed. This MRE includes deeper and significantly thicker resource zones than previously reported, with the average thickness increasing from 7m to 7.7m. Grades have increased by 15% overall. The heavy permanent magnet REOs (Dy2O3 + Tb4O7) represent 4.2% of the TREO, the highest known proportion for any REE resource in Australia.

Write to Adam Orlando at Mining.com.au

Images: ABx Group Ltd
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Written By Adam Orlando
Mining.com.au Editor-in-Chief Adam Orlando has more than 20 years’ experience in the media having held senior roles at various publications, including as Asia-Pacific Sector Head (Mining) at global newswire Acuris (formerly Mergermarket). Orlando has worked in newsrooms around the world including Hong Kong, Singapore, London, and Sydney.