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Musgrave Minerals welcomes improved test results from partner Cyprium at Cue Copper Project

Results demonstrate an accelerated leach time to extract the copper metal into solution with test work on Column C achieving a more rapid leach time than Columns A and B.

Cynata Therapeutics Ltd - Cyprium Metals progresses metallurgical column test work at Cue Copper Project
Metallurgical column test work on samples from the Cue Copper Project

Musgrave Minerals Ltd (ASX:MGV) welcomes the improving copper leaching from column test-work results returned by partner Cyprium Metals Ltd (ASX:CYP) on samples from Cue Copper Project.

The metallurgical column test work results have demonstrated an improved leach time on samples of massive and semi-massive sulphides from the Hollandaire and Hollaindaire West prospects. 

Results of the copper leaching include copper extraction of 75.4% on Column C in six days with test work continuing and the scoping study gaining momentum.

The test work is aimed at determining the viability of the optimal copper extraction method which has previously leached copper rapidly into solution.

An option has been granted by Musgrave to Cyprium Metals to earn-in and joint venture for an 80% interest in the non-gold rights over the tenements at Cue.

“Performed better than previously”

Cyprium executive director Barry Cahill said: “We are pleased to continue to announce such positive results from our metallurgical test work programs.

“The Hollandaire West material has performed better than the previous two test work columns that we conducted on material from the Hollandaire prospect.

“The metallurgical results, in conjunction with recent extensional drilling success, is a step change that gives the company even greater confidence in the project's quality and development potential.

“All these positive developments are being included in the scoping study that was recently commenced.”

Leaching of the columns is continuing with results expected to be reported once this test work has been completed.

Accelerated leach time

Results to date demonstrate an accelerated leach time to extract the copper metal into solution.

The test-work on Column C, in particular, has demonstrated a more rapid leach time than Columns A and B, which is a ‘remarkable’ result that has been achieved after only six days.

Metallurgical test work is continuing on these three columns together with other test work that is being conducted on the remaining material from metallurgical drill holes completed in 2019.

The plating of copper form the leached solution is underway and the company looks forward to updating the market on its progress in the coming weeks.

Capital and operating costs reduced

The effect of the very short leach times on a potential project is significant as it decreases the size of the heap leach pads and consequently reduces the capital and operating cost requirements over the life of the operation.

Combined with the successful extensional resource drilling at Hollandaire, the critical mass of the copper resource required for project development is close to being achieved.

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