南岭中段祥霖铺魏家钨矿床矿体地质、控矿因素及成因探讨  

Geological Characteristics,Ore-Controlling Factors and Genesis of the Weijia Tungsten Deposit,Xianglinpu,Middle Nanling

作　　者：胡绪云 王强[2] 唐尧[2] 范宏鑫 黄驰轩 HU Xuyun;WANG Qiang;TANG Yao;FAN Hongxin;HUANG Chixuan(Hunan Natural Resources Survey Institute,Loudi,Hunan 417000;College of Earth Sciences,Chengdu University of Technology,Chengdu,Sichuan 610059)

机构地区：[1]湖南省自然资源调查所,湖南娄底417000 [2]成都理工大学地球科学学院,四川成都610059

出　　处：《地质与勘探》2022年第4期719-727,共9页Geology and Exploration

基　　金：国土资源评价与利用湖南省重点实验室开放基金项目(编号:SYS-ZX-201901);成都理工大学骨干教师培养计划(编号:10912-SJGG2021-04233)和成都理工大学教改项目(编号:JG2130131)联合资助。

摘　　要：魏家钨矿床为南岭中段近年来新发现的一个大型钨矿床。通过对该矿床两类矽卡岩型矿体的详细研究,探讨了矿床的主控因素,在此基础上综合前人研究成果剖析了矿床成因。研究认为,该矿床具有钙质矽卡岩型和镁质矽卡岩型两类钨矿体,两类矿体分别产于祥霖铺花岗斑岩体与泥盆系棋梓组灰岩和泥盆系黄公塘组白云岩接触带及层间破碎带内,受层间破碎带与接触带联合控制,具有十分明显的岩性和接触带控矿特征,矽卡岩化与成矿作用密切相关。钨矿成矿流体源自岩浆热液,矿化母岩为祥霖铺花岗斑岩,矿化温度介于300℃~400℃之间。矿床成因属于典型矽卡岩型钨矿床。The Weijia tungsten deposit is a large tungsten deposit newly discovered in the middle part of Nanling in recent years.This work analyzed two types of skarn orebodies in the deposit,and discussed the ore-controlling factors and the deposit genesis based on previous study.It is inferred that this deposit contains calcareous skarn type and magnesium skarn type tungsten orebodies,which are hosted in the contact zones of the Xianglinpu granite porphyry with Devonian Qizi Formation limestone and Huanggongtang Formation dolomite,and in the interlayer fracture zone,respectively.The orebodies show a joint control by the interlayer fracture zone and contact zone,and display obvious lithology and contact zone ore-controlling characteristics.Skarnization is closely related to the mineralization.The tungsten ore-forming fluid is derived from magmatic hydrothermal fluids.The mineralized parent rock is the Xianglinpu granite porphyry,and the mineralization temperature ranges between 300℃and 400℃.This deposit is inferred to be a typical skarn type tungsten deposit.

关 键 词：矿体特征 控矿因素 矿床成因 魏家钨矿床 南岭成矿带 

分 类 号：P618.67[天文地球—矿床学]