世界核地质科学2025，Vol.42Issue(3)：527-540,14.DOI:10.3969/j.issn.1672-0636.2025.03.005
黔西南雄武地区大梨树铀矿地质地球化学特征及其意义
The geological and geochemical characteristics of Dalishu uranium deposit and its significance in Xiongwu area,southwest Guizhou province
摘要
Abstract
Dalishu uranium deposit is a carbonate rock type uranium deposit located at the Lukan fault hanging wall in the southeast limb of Xiongwu anticline.Researches on this uranium deposits are still seldom reported.Based on the field geological survey and collection of uranium ore samples in trenches and boreholes,this paper conducted a study on mineralogy,geochemistry,and genesis of the deposit.The study show that the ore body is controlled by the northeast-trending faults and the secondary Si-Ca structural planes and closely related to organic matters.The main uranium minerals in the ore are pitchblende and uraninite,and the uraninite minerals,which are closely associated with pyrite and"black"organic matters.The trace elements such as V,Cr,Co,Ni,Cu,Zn,and Mo are enriched in the ore and the wall rocks.The rare earth element distribution pattern is"right-inclined"with the enrichment of LREE and negative δEu anomaly,indicating a certain genetic relationship with the Cambrian black rock series.It believed that the ore-forming materials maybe come from the Cambrian Niutitang and Laoba formation,the deposit was formed by deep hydrothermal action which extracted the uranium from the Cambrian basement ore-forming materials and carried to favorable areas under the orogenic background of Himalayan period.关键词
碳酸盐岩型铀矿/地球化学/黑色岩系/大梨树铀矿/雄武/黔西南Key words
carbonate-type uranium deposit/geochemistry/black rock series/Dalishu uranium deposit/Xiongwu/southwest Guizhou分类
地质学引用本文复制引用
陈秀旺,彭松,范云飞,王琼,程俊义,卢平..黔西南雄武地区大梨树铀矿地质地球化学特征及其意义[J].世界核地质科学,2025,42(3):527-540,14.基金项目
贵州省地质勘查专项基金(编号:黔自然资函[2023]119号-26) Supported by Guizhou Provincial Geological Exploration Special Fund(No.黔自然资函[2023]No.119-26) （编号:黔自然资函[2023]119号-26）
