 Firstly, it is a supergene zinc ore body composed of alluvial accumulations of zinc carbonate and silicate minerals of detrital nature deposited within a palaeochannel.There are no other currently commercially viable deposits of this type.It is also one of the few mines in the world that currently mines zinc oxides, a mixture of non-sulphidic zinc minerals such as smithsonite, hydrozincite, tarbuttite and willemite.