摘要
江西会昌锡坑迳锡矿田地处武夷山成矿带,由岩背、淘锡坝、凤凰岽、苦竹岽等4个中-大型矿床组成。本文介绍了该矿田的地质特征,重点阐述了岩浆岩的分布、形态及与矿化富集的内在联系,介绍了查明的数处矿床矿化特点,总结了锡矿的成矿规律,认为密坑山白垩纪花岗岩是锡矿的成矿物质来源,受体火山机构及北东、北西向断裂的复合控制下,矿液沿有利构造部位成矿。本文认为锡坑迳矿田锡矿类型主要有四种:斑岩型、云英岩型、破碎带蚀变岩型、隐爆层间裂隙带型。
The Xikengjing tin ore field in Huichang county, Jiangxi Province, is tectonically located at the Wuyishan metallogenic belt and is mainly constituted of four middle--large scale deposits, including Yanbei, Taoxiba, Fenghuangdong and Kuzhudong tin deposits. This paper introduces the geological characteristics of the Xikengjing ore field and puts emphases on the internal relations between the distribution and mor- phology of magmatic rocks and mineralization enrichment. Summarizing the mineralization characteristics and metallogenic regularity of some tin deposits, it is considered that the Cretaceous granites are the ore-- forming material resources of tin deposits. Being complexly controlled by volcanic structure and NE-trend and NW-trend faults, mineralization occurred along the favorable structural parts. It is concluded that the types of tin deposits in the Xikengjing ore field can be divided into porphyry type, greisen type, fracture zone alteration rock type and cryptoexplosive intrastratal fracture belt type.
出处
《资源调查与环境》
2013年第2期109-115,共7页
Resources Survey & Environment
基金
国土资源大调查项目(项目编号:199910200233)资助
关键词
火山岩
白垩纪花岗岩
锡矿
锡坑迳
volcanic rocks
Cretaceous granites
tin deposit
Xikengjing
