Abundant nonferrous metallic, precious metallic, rare earth metallic and nonmetallic mineral resources are hosted in the Early Cambrian black rock series in south China.
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释义
摘要我国南方早寒武世黑色岩系中,蕴藏着丰富的有色金属、贵金属、稀土金属和石煤及非金属矿产。
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