Iron ore prices rose by 2.8 per cent on Friday as stronger steel prices drove demand for the commodity.
Iron ore prices rose by 5.5 per cent this week, rising from $US64.75 to $US68.30 per tonne.
Steel prices rose close to 2 per cent this week as demand concerns eased.
High steel rebar stockpiles had affected iron and steel prices during March but those stockpiles have continued to decline.
Iron ore futures surged on the Dalian Commodity Exchange, supported by a sharp increase in base metal futures on the London Metal Exchange earlier this week.
Shares in BHP Billiton and Rio Tinto were both down at the market open. BHP was trading down 0.6 per cent at $30.73 while Rio has fallen 0.3 per cent to $81.20.