Characteristics of Fe-Al rock series on the top of Emeishan basalt in northwestern Guizhou Province and enrichment characteristics of its three rare elements
XUE Hongfu, ZENG Daoguo, XIANG Mingkun, MANG Shicai, ZHANG An
Academy of Geological and Mineral Exploration, Guizhou Nonferrous Metal and Nuclear Industry Geological Exploration Bureau, Guizhou Guiyang 550005, China
Abstract：The Fe-Al rock series is widely developed on the top of the Emeishan basalt in northwestern Guizhou Province. In order to ascertain the characteristics of the Fe-Al rock series and explore the enrichment characteristics of its three rare elements, the authors carried out a field survey on it. The results show that the Fe-Al rock series as the weathering crust at the top of the Emeishan basalt is apparently different when the overlying stratum is Xuanwei Formation (P3x) or Longtan Formation(P3l). Sample test results show that the Fe-Al rock series is rich in three rare elements such as Sc, Nb, REE, with great prospecting prospects. The Sc, Nb and REE contents of the Fe-Al rock series with Xuanwei Formation (P3x) is higher than that of the Fe-Al rock series with Longtan Formation (P3l), especially Nb and REE. The Sc, Nb and REE concentration in the Fe-Al rock series is an outcome of combined action of the initial enrichment weathering and the late beneficiation reformation on the Emeishan basalt.
薛洪富, 曾道国, 向明坤, 忙是才, 张安. 黔西北峨眉山玄武岩顶部Fe-Al岩系特征及其三稀元素富集特点[J]. 中国地质调查, 2021, 8(5): 25-34.
XUE Hongfu, ZENG Daoguo, XIANG Mingkun, MANG Shicai, ZHANG An. Characteristics of Fe-Al rock series on the top of Emeishan basalt in northwestern Guizhou Province and enrichment characteristics of its three rare elements. , 2021, 8(5): 25-34.
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2021, Vol. 8 
