The key issue for me here is that Australia's not getting the same infrastructure projects that China's African resource partners are getting (eg roads, schools, hospitals.) Australia's probably getting more money instead.
For example: "Abuja — The Chinese government has concluded arrangements to spend about $50 billion on development of infrastructure in Nigeria through SINOSURE, the Export Credit Guarantee Agency of China." http://allafrica.com/stories/200803310705.html
Why would you think that Australia would have the same demand for basic infrastructure that Africa does, considering the relative economic positions of the vendors in each instance?
Unpredictability brings anxiety and hope in equal measure to the 8,000 Aborigines in the Pilbara, who hope their third-world living conditions might be raised by the China boom. Tony Wiltshire, an indigenous mechanic who runs a guild of Aboriginal businesses and tradesmen in the Pilbara, says the mining boom's benefits could sidestep the local population.
For example: "Abuja — The Chinese government has concluded arrangements to spend about $50 billion on development of infrastructure in Nigeria through SINOSURE, the Export Credit Guarantee Agency of China." http://allafrica.com/stories/200803310705.html
"Of some 900 projects China built in Africa, more than half are aimed at improving local people's livelihoods." http://www.china.org.cn/opinion/2010-07/04/content_20416315....