摘要
广西的锡矿资源丰富,矿床类型多,成矿条件比较复杂。笔者认为,除了一小部分岩浆矿床和岩浆期后矿床之外,许多重要的锡矿床都受一定层位控制,是一些多物质来源、多种成矿方式、多期次形成的复成矿床。一、矿床分类及特征概述按照成因,广西锡矿床可以划分为三大类五亚类共十二个型(式)。
The identified tin ore deposits of Guangxi may be divided into three groups and twelve types(models)(Table 1).Except a part of magmatic deposits and magmatic-hydrothermal deposits,almost all the important tin deposits are of strata-bound type and tin ores are confined to certain strata.This peper deals with the relationship between tin and sedimentary facies(including organic reef),and lists tin contents of the ore-bearing strata,as well as the lead,sulfur and oxygen isotopic data.The ore-controlling effect of the Devonian,Cambrian and Proterozoic Sibao series,structural conditions and magmatism,and also the tin sources are discussed.The writer constructs primarily a generalized model of the tin ore formation of Guangxi(Figure 7),and concludes that the formation of most of the industral tin ore deposits of Guangxi must be under the conditions of sufficient available source material,favorable structures and magmatism in enriching the ore metals,and the acting force of the ore-forming process is the underground water circulation induced by magmatic thermals and hydrothermals.
作者
冼柏琪
Xian Baiqi(Institute of Geology,Guanxi Geological Bureau)
出处
《地质学报》
1984年第1期49-62,共14页
Acta Geologica Sinica
