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Antipa Minerals Ltd

Antipa Minerals confirms potential cobalt products from North Telfer processing

The additional cobalt processing will help Antipa extract further value from the project.

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North Telfer is 40 kilometres north of Newcrest's Telfer mine in WA

Antipa Minerals Ltd (ASX:AZY) has confirmed ore from its North Telfer Project in Western Australia can be processed to produce both copper-gold concentrate as well as cobalt-gold products.

The metallurgical test work demonstrated the ore could produce a copper-gold concentrate of up to 21.9% copper in intermediate flotation concentrate with high gold grades up to 67 g/t.

Antipa also produced standalone cobalt products in the test work, using both gravity and flotation methods to produce concentrate.

The cobalt gravity concentrate graded up to 11% cobalt with recoveries up to 66% and the flotation concentrate graded up to 5.6% cobalt with recoveries up to 68%, both with gold by-product.

All metallurgical test work to date has been conducted by Bureau Veritas Minerals Pty Ltd under the management of Strategic Metallurgy Pty Ltd.

READ: Antipa Minerals raising up to $7.5 million to accelerate gold, copper exploration programs

The test work aimed to confirm the potential of ore from the Minyari Dome deposit to be processed through two potential routes: a conventional gold circuit to recover gold only or a conventional flotation to create discrete copper-gold and cobalt-gold products.

This follows on from testing in 2017 that focused on gold only, with conventional gravity and cyanide leach processing delivering recoveries of 95% in oxide ore and 88% in primary ore.

Antipa believes unlocking the copper and cobalt by-product value can further enhance the project’s development, particularly now that it is demonstrably amenable to conventional processing techniques.

Upcoming test work will focus on:

  • Copper and cobalt flotation optimisation to improve concentrate grades at suitable recoveries;

  • Optimisation of gravity concentration of cobalt;

  • Oxide by-product flotation test work;

  • Grind optimisation; and

  • Evaluation of heap leach amenability.

Quick facts: Antipa Minerals Ltd

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Market: ASX
Market Cap: $31.14 m
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