The size of Australia's iron ore export earnings continues to soar despite concerns about an end of the mining boom, a new report says.
Iron ore is also racing ahead of coal and is tipped to have generated more than double the latter's revenue in the last quarter of 2013.
The mining investment boom is generally considered to have peaked in Australia, but export earnings and the contribution to public revenue are not declining yet, according to East & Partners' iron ore and coal (IOC) index.
It forecasts Australia stands to earn US$21.9 billion ($23.8 billion) from booming iron ore exports during the last three months of 2013, compared to softening thermal and coking coal revenues of US$10.1 billion.
Based on figures from Australia's export ports and official government data, the report predicts the 7.9 per cent revenue lift from the previous quarter will come from a 6.3 per cent lift in iron ore exports to an all-time high of 161 million tonnes.