中国地质2025，Vol.52Issue(6)：1950-1962,13.DOI:10.12029/gc20230728001
四川攀西宽裕黏土型稀土矿床地质特征、控矿因素及找矿潜力
Geological characteristics and metallogenic factors of the Kuanyu clay-hosted REE deposit in the Panzhihua-Xichang district,Sichuan and its prospecting potential
摘要
Abstract
This paper is the result of mineral exploration engineering. [Objective]Clay-hosted REE(rare earth element)deposit mainly occurs in low altitude,low elevation above sea level,and rolling topography,and is associated with Caledonian or Yanshanian highly fractionated granitoids.Can they be formed in high elevation,middle mountain,and/or associated with much older granite?[Methods]By means of geological mappings and boreholes,[Results]A medium-sized clay-hosted REE(rare earth element)deposit,i.e.the Kuanyu deposit,has been identified within the weathering crusts of the Mosuoying granite in the Panzhihua-Xichang district,Sichuan,SW China.The Kuanyu deposit is generally LREE-enriched and low grade,with leachable REE concentration.Orebodies are very shallow,and concentrate between 1427 and 2153 m above sea level.They predominantly occur in the uppermost part of the completely weathered zone of laterite-type weathering profiles,and could be further grouped into three types,named ridge-type,slope-toe-type and valley-type,according to local geomorphology.Such features are significantly different from the clay-hosted REE deposits in South China,where the orebodies are much deeper and tend to locate on ridge of low hills(mostly with an elevation of＜500 m).[Conclusions]We propose that,the unique climate,regional geomorphology(slope gradient),bedrock compositions are three key factors controlling the formation of the Kuanyu REE deposit.The case study presented in this article would be significantly helpful in understanding of the ore-forming mechanism and further exploration of clay-hosted REE deposits.关键词
黏土型稀土矿/地质特征/控矿因素/找矿潜力/高海拔/矿产勘查工程/四川Key words
clay-hosted REE deposit/geological characteristics/metallogenic factors/prospecting potential/high elevation area/mineral exploration engineering/Sichuan分类
天文与地球科学引用本文复制引用
夏小洪,刘图强,尹川,段利,杨伟,汪辰,李诺,王成辉,谭洪旗..四川攀西宽裕黏土型稀土矿床地质特征、控矿因素及找矿潜力[J].中国地质,2025,52(6):1950-1962,13.基金项目
四川省政府性投资地质勘查项目(DZ202015)和四川省重大科技专项"攀西稀土短流程高效富集分离与高值化应用关键技术研发"(2023ZDZX0005)联合资助. Supported by the Geological Exploration Fund of Sichuan Province(No.DZ202015)and Sichuan Major Science and Technology Special Project:Key Technologies for Short-Process,Efficient Enrichment,Separation,and High-Value Application of Panxi Rare Earth(No.2023ZDZX0005). （DZ202015）
