摘要
贵州省晴隆大厂锑矿田是我国锑矿的重要产地之一,锑矿床严格受“大厂层”的控制,该层是产于二叠系峨嵋山玄武岩底部和茅口组不整合面上的复杂蚀变岩层。锑在“大厂层”中得到初步富集之后,又经构造改造,被活化迁移到有利构造部位而形成矿床。矿体具有明显的构造—热液改造成矿特点,以各种脉状、透镜状为主。本文从构造与成矿关系入手,通过野外和室内摸拟实验,对锑矿成矿的构造控制特征,构造热动力作用下锑的地球化学行为以及矿田内岩石的应力、应变和物质成分变化及其对锑矿成矿作用的影响等方面进行了探讨,在锑矿成矿规律和构造运动与物质运动之间关系上取得了进一步的认识。
The antimony deposits in Dachang antimony orefield, Qinglong are strictly controlled in 'Dachang Layer' which consists of volcanic and hot spring sedimentary rocks and altered rocks located in the bottom of Emeishan basalt of Upper Permian Age and on the erosion surface of Maokou Formation. Antimony was preliminarily concentrated in 'Dachang Layer', then, tectonic and thermal fluid movement make the antimony mobilize, migrate and enrich in the favourable tectonic zones to form antimony deposit-s. Through field work and experiments of tectonic controls of antimony mineralzation, the geochemical behavior of antimony under tectonic thermal dynamic conditions and the features of tectono - metallogenesis and tectonic controls on antimony deposit have been studied.
出处
《贵州地质》
1993年第1期18-25,共8页
Guizhou Geology
