We have a problem. Stagnation.
I suspect we will also have stagflation fairly soon.
As soon as our capacity to export iron ore along with brazils, Indias etc reaches a point that meets or exceeds demand and the investment pipeline is cut off watch;
Our stockmarket falls probably predicting the eventual capitulation of mineral prices.
Our dollar falls.
Investment in new mineral projects or those only in the planning stages is put on hold or cancelled.
Interest rates fall.
Forcing our dollar to fall further.
In the middle of job losses and our central bank slashing rates we would also have inflation starting to get out of control with petrol at $2.20 or more and other imports becoming prohibitively expensive.
We then suffer stagflation while we have both GDP going backwards and inflation rising due to our weakening dollar.
Of course with a weaker dollar other exports become more competitive but the shift into these will be even slower than the shift out of them so a few years of pain at least before things kick off again and likely 10 years or more before minerals prices get into another investment cycle.
The GFC in my opinion prolonged this current investment boom in mining. We had all sorts of projects postponed all around the world and it gave us more time to reap the rewards of this boom. Capitalism however has one major weakness around long lead time items like minerals, it always overshoots on the supply side.
Edit: and so the high interest rates now are assisting this transition into a mining economy when we need at the least fiscal policies to keep our capacity in things other than mining. Otherwise the pain when this cycle ends (the minerals cycle has been happening for 100 years or more this is not going to be the last of them...) will be greater.