Iron ore prices, long resilient despite China's gloomy economic outlook, have tumbled since the end of the Lunar New Year holiday, sparking concerns around faltering demand and denting mining stocks in top producer Australia. Prices have fallen by nearly 8% since China, the world's biggest consumer of the key steelmaking ingredient, returned to work on Feb. 19, pressuring Australian mining stocks to four-month lows on Tuesday. Even Beijing's biggest-ever cut in the benchmark mortgage rate to revive the ailing property market failed to support prices, which typically get a boost from such stimulus.
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