湖南芙蓉锡矿的地质地球化学特征及找矿意义  

Geological and geochemical features of the Furong tin deposit in Hunan an d their significance for mineral prospecting

作　　者：王登红[1] 陈毓川[2] 李华芹[3] 陈正宏[4] 余金杰[1] 路远发[3] 李寄嵎[4] 

机构地区：[1]中国地质科学院矿产资源研究所,北京100037 [2]中国地质科学院,北京100037 [3]中国地质调查局宜昌地质矿产研究所,湖北宜昌443003 [4]台湾大学

出　　处：《地质通报》2003年第1期50-56,共7页Geological Bulletin of China

基　　金：中国地质调查局地质调查项目"中国大陆成矿体系;K1.4"; 国家重点基础发展规划项目G1999043201和G1999043203课题的部分成果

摘　　要：湖南芙蓉锡矿区是近年来新发现并正在进行勘查的新矿区,该矿区以锡矿产于花岗岩大岩体内部和潜在的巨大找矿潜力而引人注目。在野外初步调查的基础上,结合室内工作,认为芙蓉锡矿及其相关的岩浆岩在许多方面与众不同,如:产于岩体内部,蚀变花岗岩中浸染状锡石矿化、锡石-硫化物型及锡石-磁铁矿型等不同类型的矿化同时存在,绿泥石化发育且不同类型的锡矿化对应于不同的绿泥石成分,花岗岩类岩石低SiO2、高Sr等地球化学异常。本文主要探讨矿化及含矿岩体的某些地球化学异常并提出深部找铜的意见。The Furong tin district,Hunan,is a new tin district that has b ee n found in recent years and is now under exploration.Tin ores in this district occur inside a large granite mass and it has great ore potential,so it has at tracted great interest among people.Preliminary field survey,combined with ind oor work,suggests that the Furong tin deposit and its related magmatic rocks a re unique in many aspects;for example,it occurs inside a rock mass;different types of mineralization,such as disseminated cassiterite,cassiterite-sulfi de and cassiterite-magnetite type mineralizations ,occur simultaneously in al tered granitoids;chloritization is well developed and different types of tin mineralizations correspond with different composi-tions of chlorite;granit oids are characterized by lower SiO 2 and higher Sr.This paper mainly discusses mineralization and some geochemi cal anomalies of the mineralised granite mass and advances the suggestion of l ooking for copper at depths.

关 键 词：湖南 地球化学 花岗质岩 绿泥石化 锡多金属矿床 

分 类 号：P618.44[天文地球—矿床学] P59[天文地球—地质学]