大溶溪层控夕卡岩型白钨矿床之成矿与控矿因素  

Metallogeny and ore-control factors of Darongxi strata bound skarn scheelite deposit

作　　者：艾国栋[1] 戴塔根[1] 陈明辉 鲍振襄 包觉敏 

机构地区：[1]中南大学资源与环境工程学院,长沙410083 [2]湖南省有色地质勘查局二四五队,湖南吉首416007 [3]湘西矿产资源综合研究发展中心,湖南乾州416009

出　　处：《地质找矿论丛》2011年第1期12-17,共6页Contributions to Geology and Mineral Resources Research

摘　　要：大溶溪白钨矿床产于辰山花岗岩体外接触带下震旦统南沱砂岩组热变质晕(带)内,矿体沿南沱砂岩组作层状、似层状及厚大的透镜体状自然延伸,矿床规模为大型,产状稳定。矿体严格受断裂及不整合面的控制,岩体和特定层位是矿床形成的必要条件,成矿作用主要发生在印支期,由岩体与围岩作用形成的高温热液沿构造裂隙充填交代成矿。矿床为与夕卡岩化有密切成因联系和空间关系的层控夕卡岩型白钨矿床。Darongxi sheelite deposit occurs in thermal metamorphic halo at outer contact zone in Nantuo sandstone formation of Lower Sinian Series as naturally extended thick layer or layeroid lenses.It is a stable large size deposit strictly controlled by fracture and unconformable plane.Intrusive body and specific horizon are the prerequisites for its formation.The metallogeny took place in Indo-China period and the deposit is formed by high temperature fluid filling and replacement along fracture and temporally and spatially and genetically related to skarn.

关 键 词：大溶溪白钨矿床 地质特征 控矿因素 成矿过程 成因 湖南省 

分 类 号：P611[天文地球—矿床学] P618.67[天文地球—地质学]