地质学报2026，Vol.100Issue(2)：510-523,14.DOI:10.19762/j.cnki.dizhixuebao.2025157
桂西上二叠统合山组含铝岩系关键金属成矿规律及物质来源
The metallogenic regularity and material sources of critical metals in the aluminum-bearing rock series of the Upper Permian Heshan Formation in western Guangxi
摘要
Abstract
Bauxite deposits are an important source of critical metals.This study focuses on the deposits within the Upper Permian Heshan Formation(P3h)in western Guangxi,a major bauxite-producing region in China.By analyzing the critical metals in this aluminum-bearing rock series,we aim to provide a framework for the comprehensive exploration,evaluation,and utilization of these resources.Based on the latest exploration results,this study:summarizes the planar distribution of associated critical metals across deposits;provides a detailed analysis of the aluminum-bearing rock series;investigates the vertical enrichment patterns of critical metals in the profile;and elucidates the sources of the metallogenic materials.The results demonstrate significant enrichment of critical metals(Ga,Li,Nb)and rare earth elements(REE)in the Heshan Formation.These critical metals are mainly enriched in two zones:the bauxite ore layers in the middle of the sequence and the ferruginous-aluminous rocks in the lower part.The aluminum-bearing rock series and the critical metals have a polygenetic origin.We propose a dual-source model where material was derived from both the underlying basement strata and from intermediate-to-felsic volcanic rocks derived from the Late Permian volcanic island arc.关键词
关键金属/含铝岩系/成矿规律/物质来源/桂西地区Key words
critical metals/aluminum-bearing rock series/metallogenic regularity/material source/western Guangxi引用本文复制引用
覃丰,黄世财,吴祥珂,徐海棚,孟祥仑..桂西上二叠统合山组含铝岩系关键金属成矿规律及物质来源[J].地质学报,2026,100(2):510-523,14.基金项目
本文为国家重点研发计划项目(编号 2022YFC2903400)资助的成果. （编号 2022YFC2903400）
