SYDNEY, Dec 10 (Reuters) - Australian shares are likely to open lower for a third consecutive session on Thursday as the benchmark lingers near a three-week low, under pressure from a weaker iron ore price. Local share price index futures fell 0.5 percent to 5,055.0, a 25-point discount to the underlying S&P/ASX 200 index .AXJO close on Tuesday. The benchmark fell 0.55 percent in the last session. New Zealand's benchmark NZX 50 index fell 0.26 in early trade. For a summary of overni
