会昌淘锡坝锡矿床地质特征

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• 英文论文题名：On geological characteristics of Taoxibatin deposit in Huichang county
• 论文作者：唐石
• 英文论文作者：TANG Shi ; Jiangxi Institute for Geological Survey
• 年：2017
• 作者机构：江西省地质调查研究院;
• 论文关键词：锡矿床 ; 地质特征 ; 成因类型 ; 江西会昌
• 英文论文关键词：tin deposit ; geological characteristics ; genetic type
• 会议召开时间：2017-08-01
• 会议录名称：2017年江西省地质学会论文汇编集II
• 语种：中文
• 分类号：P618.44
• 学会代码：JXDZ
• 学会名称：江西省地质学会
• 页数：6
• 文件大小：899k
• 原文格式：O

摘要

会昌淘锡坝锡矿床产于燕山晚期粗斑细粒黑云母花岗岩与晚侏罗世鸡笼嶂组流纹质火山碎屑岩—火山熔岩的内、外接触带,以外接触带为主。锡矿体产状主要受火山及次火山活动有关的层间裂隙带控制,呈缓倾斜的似层状、脉状产出。矿石矿物组合较复杂,矿石类型主要为锡石—石英(黄玉)—硫化物型,矿石结构以它形晶结构为主,具细脉浸染状构造,与矿化关系最密切的蚀变主要有黄玉石英岩化、黄玉石英绿泥石化。根据上述特征,认为淘锡坝锡矿床成因类型为火山活动期后与次火山隐爆活动有关的岩浆期后高—中温热液交代—充填型矿床。
Taoxiba tin deposit occurs at the inner and outer contact zone of volcanic lacustrine-volcanic lava in late Yanshanian magnophyric and grained biotite-granite and rhyolite volcanic clastic rock-volcanic lava of Jilongzhang group in late Jurassic,in which occurrences at the out contract zone dominant.The formation of tin deposit,which occurs in gentle inclined bedlike and vein shape,is mainly controlled by interlayer fissures which are related to volcanic and subvolcanic activities.The composite of minerals are more complicated,and the ore types are mainly cassiterite-quartz(topaz)-sulfide type and the ore structure is dominated by allotriomorphic crystal structure,with vein-like structure and the main alteration which most closely related to the mineralization are topaze quartzification and topaze-quartz chloritization.According to the above characteristics,it is considered that the genetic type of Taoxiba tin deposit is the post-magmatic pyrometasomatic and hydrothermal deposit related to the secondary volcanic blasting activity after the volcanic activity period.

引文

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