江西相山济河口地区铀成矿规律及找矿方向  

Prospecting direction and metallogeny regularities of uranium in Jihekou area,Jiangxi Province

作　　者：魏欣 吕川 陶尔侃 WEI Xin;Lyu Chuan;TAO Erkan(Research Institute No.270,CNNC,Nanchang 330200,Jiangxi,China)

机构地区：[1]核工业二七○研究所,江西南昌330200

出　　处：《矿产勘查》2021年第5期1176-1183,共8页Mineral Exploration

基　　金：核工业地质局“江西省乐安县鹏姑山地区济河口地段铀矿普查”项目(202027-1)资助。

摘　　要：济河口地区位于江西省相山矿田西部,邹家山和居隆庵矿床的中间过渡部位。前人认为该区的矿体主要以"邹家山"式规律赋存,重点对NE向断裂进行揭露。近年来随着钻探揭露,笔者首次提出济河口地区矿体赋存规律更倾向于"居隆庵式",即铀矿化受断裂和火山岩组间界面变异部位控制但基底并未扰动,矿体集中分布在碎斑熔岩与流纹英安岩界面"S"型凹兜底部。NW向济河口断裂是区内重要的控矿断裂,该断裂与火山岩岩性界面联合控制铀矿化的产出,两者复合处是第一有利成矿部位,而流纹英安岩与基底片岩界面与济河口断裂复合部位是第二有利成矿部位。第二有利部位将是相山西部未来深部找矿的主要方向,其内外侧的花岗斑岩是有利找矿标志。The Jihekou area is located in the west of Xiangshan ore field in Jiangxi,where is the transitional position of Zoujiashan and Julongan deposits.In the past,it was believed that the ore bodies in this area mainly occur in the pattern of Zoujiashan.With more drilling activities have been conducted,we believe that the occurrence law of ore bodies in this area is more inclined to Julongan type,namely,uranium mineralization is controlled by faults and the intervolcanic interface,but the basement is not disturbed.The ore bodies are mainly distributed in the S-type concave bottom of the interface between cataclastlava and rhyodacite.The NW-trending Jihekou fault is an important ore-controlling fault,which jointly control the location of uranium ore body with the lithologic interface of volcanic.The overlapping position of faults and interface of volcanic is the first favorable metallogenic site.The overlapping position of the interface between rhyolitic and basement schist and Jihekou fault is the second favorable metallogenic site.The second favorable metallogenic site indicate the key prospecting direction for further deep ore-prospecting in the west of Xiangshan ore filed and the inner and outer granitic porphyries are indicators of prospecting.

关 键 词：相山 铀矿 地质调查工程 “居隆庵”式赋矿规律 

分 类 号：P613[天文地球—矿床学]