The Australian sharemarket retreated further from six-week highs hit last week, as lower commodity prices weighed on mining and energy stocks, while mixed trade data out of China rekindled worries about the health of the world's second-largest economy.

The S&P/ASX 200 index fell 30 points, or by 0.7 per cent, to 5202.9, dropping for a second day, while the All Ordinaries was down 32 points, or by 0.8 per cent to 5234.6.