The Australian miners, such as Rio Tinto (ASX:RIO), have reported a decline as steep as 1.3%, marking their lowest point since mid-September.

A continuing downfall is indicated for the sub-index, with an expected fourth consecutive session of decline.

Prices for iron ore have recently softened, while traders remain on the lookout for further details on China’s commitment to implement more policies that would strengthen its economic recovery.

Heavyweight company Rio Tinto (ASX:RIO) has experienced a slump of 0.5% and BHP Group (ASX:BHP) has reported a 1.1% fall.

Fortescue Metals Group (ASX:FMG) has also seen a decrease in their standing, with a 0.8% decline.

The sub-index has dropped by 2% this year to date.

(Rio Tinto is a multinational mining company, known as one of the largest in the industry.)