期刊论文

中文

矿产勘查

1674-7801

2024

15

03

353-363

10.20008/j.kckc.202403002

2019B030302013:广东省基础与应用研究重大项目 20230135DZ:湖南省自然资源厅科技项目 23C0320:湖南省教育厅项目

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南亩稀土矿床位于南岭成矿带中段南侧,属离子吸附型稀土矿床,产于中三叠世坪田岩体的花岗岩风化壳中,其产状和形态特征受地形地貌控制.区域上发育多个同类型矿床,成矿条件研究还存在争议.本文针对南亩矿床地球化学特征及成矿标志进行研究,可为区域同类型稀土矿床的勘查找矿提供重要的依据.矿石矿物成分主要为风化后的黏土类矿物,稀土元素以离子状态赋存于黏土矿物上,95.96%离子型稀土赋存于粒径≥0.154 mm的矿物中,稀土组分分布均匀,品位变化稳定.未风化花岗岩包括黑云母花岗岩和碱长花岗岩,与稀土矿石稀土元素球粒陨石标准化配分曲线均为右倾平滑型,轻、重稀土分馏明显,均表现出轻稀土富集特征...

Nanmu rare earth ore deposit is located in the south of the middle section of the Nanling metal-logenic belt,and is an ion adsorption rare earth deposit,produced in the granite weathering crust of the Middle Triassic Pintian pluton,and its production and morphological characteristics are controlled by the topography and geomorphology.Many deposits of the same type have been developed in the region,and the study of mineralization conditions is still controversial.The geochemical characteristics and metallogenic signatures of the Nammu deposit ca...