Cerium is the most abundant of the rare earths and previous drilling at a South Australian prospect hit ore containing up to 1.2 per cent of that metal.
It is used in glass polishing, lighting, as a catalyst in petroleum production and has applications in the nuclear sector.
When, over previous decades, the former Western Mining, the former MIM, the former CRA and pre-Billiton BHP explored the Maitland project, rare earths were probably of least interest, but the cerium results went into the data file anyway. They also found copper, gold and uranium.
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