![ScreenHunter_01 Feb. 01 09.23](https://www.macrobusiness.com.au/wp-content/uploads/2012/09/ScreenHunter_01-Feb.-01-09.23.gif)
The Australian Bureau of Statistics (ABS) released Mineral & Petroleum Exploration data, which revealed a slight easing in exploration expenditure after last release’s record.
Nationally, expenditure on minerals exploration fell -$76.7 million in the June half, with petroleum exploration expenditure also falling by -$157.7 million (see below chart).
![ScreenHunter_11 Sep. 03 12.31](https://www.macrobusiness.com.au/wp-content/uploads/2012/09/ScreenHunter_11-Sep.-03-12.31.gif)
Expected mineral and petroleum exploration expenditure rose over the month, up by 1% and 20% respectively for the December 2012 half (see below chart).
![ScreenHunter_12 Sep. 03 12.37](https://www.macrobusiness.com.au/wp-content/uploads/2012/09/ScreenHunter_12-Sep.-03-12.37.gif)
Iron ore continues to dominate minerals exploration expenditure, rising by 25% over the June quarter and accounting for 32% of total expenditure (see below chart).
![ScreenHunter_13 Sep. 03 12.42](https://www.macrobusiness.com.au/wp-content/uploads/2012/09/ScreenHunter_13-Sep.-03-12.42.gif)
Western Australia continues to dominate mineral exploration expenditure, accounting for just over half of the nation’s exploration expenditure ($581 million) in the June quarter, although it declined by -$9.3 million or -1.6% over the quarter (see below chart).
![ScreenHunter_14 Sep. 03 12.56](https://www.macrobusiness.com.au/wp-content/uploads/2012/09/ScreenHunter_14-Sep.-03-12.56.gif)
Western Australia is also dominating petroleum exploration expenditure, accounting for two-thirds of national exploration expenditure in June 2012, with total petroleum expenditure rising by $328 million since the March quarter of 2012 (see below chart).
![ScreenHunter_15 Sep. 03 12.57](https://www.macrobusiness.com.au/wp-content/uploads/2012/09/ScreenHunter_15-Sep.-03-12.57.gif)
The ABS mineral and petroleum exploration expenditure data obviously pre-dates the recent collapse of iron ore prices, which is likely to result in the winding-down of exploration expenditure going forward.
Twitter: Leith van Onselen. Leith is the Chief Economist of Macro Investor, Australia’s independent investment newsletter covering trades, stocks, property and yield. Click for a free 21 day trial.