The Bayan Obo Fe-REE-Nb ore deposit, Inner Mongolia, China is a super large REE deposit.

内蒙古白云鄂博铁、稀土、铌矿床是举世闻名的超大型稀土矿床。

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It began in the 1980s with the opening of an iron mine called Bayan Obo in Inner Mongolia.

这要追溯到上世纪80年代在内蒙古白云鄂博开铁矿的时候。

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The combined flowsheet can greatly improve comprehensive utilization of Bayan Obo low and medium grade oxide ores.

磁浮联合流程大大提高了白云鄂博中贫氧化矿综合利用程度。

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Bayan Obo alone accounts for 45%. (The neat graph below is courtesy of Wikipedia).

FORBES: The Politics of Rare Earth

China had several competitive advantages over the U.S. First, it has some of the best concentrations of rare earths in the world, including the huge Bayan Obo mine in Inner Mongolia.

FORBES: The Politics of Rare Earth