名词
中文翻译：褐铁矿
同义词：
['brown iron ore', 'brown pyroxene']
例句：
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1.The mineral is mined from the earth for its valuable minerals content.
这种矿物从地下开采，因其有价值的矿物质含量而闻名。
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2.Tourmaline is a gemstone that has been used in jewelry for centuries.
托玛琳是一种宝石，自古以来就被用于珠宝制作。
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3.The brown tourmaline mines are located in the mountainous regions of South America.
这些褐铁矿矿床位于南美洲的山区。