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Mining for Greener Technologies

Resource Estimate

The current estimate of reserves and resources are set out below:

1.9% ZrO2

0.65% REO

0.2% NbO2

0.03% Ta2O5, WO3 and HFO2

However, as the material can be magnetically separated very cheaply with the costs offset to some extent by the sales of the waste products, the effective true grade is:

9-10%             ZrO2

2.5-2.7%         REO

1%                  Nb2O5

0.15%             Ta2O5, HFO2

Recent testing on a limited scale suggest that eudialyte also contains tungsten at about the same concentration as tantalum - no efforts have been undertaken to see if this can be economically separated.