Rare Earth Carbonate

Following the successful verification of the acid leach recovery process at ANSTO which was announced earlier in the year, a high purity mixed rare earth carbonate has been produced.

The belowing picture is the high purity (99%) mixed rare earth carbonate (56% REO) produced from Ngualla feed mineralisation at ANSTO Minerals.

                 

The carbonate was precipitated directly from the rare earth chloride solution (Figure 1) used as the feed for the SX Pilot Plant which was produced from a bulk sample of Ngualla mineralisation.

Peak said that assay results of this carbonate have now been received and indicate a high purity (>99%) rare earth carbonate with a rare earth content of 56% REO and less than 1% impurity metals present. Most importantly, the radioactive elements, thorium and uranium, are extremely low, being below detection limits.

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