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大宝山铜铅锌硫多金属矿床是赋存在粤北泥盆系中的一个大型层控矿床.进入八十年代以来,先后有多人对它进行了专题研究,从不同侧面肯定了该矿床的层控特征.但是,迄今为止,对其成因仍有不少争议.笔者认为,该矿床是由于中泥盆世沉积作用形成的多金属矿体(或矿胚)受到了燕山期岩浆热液成矿作用叠加的结果.因此,该矿床兼有沉积矿床及热液矿床的某些特征,而又有所区别. 鉴于该矿床的地质特征已有文章作过较多的讨论,本文不拟赘述.以下仅就热液成矿作用的热力学条件作初步探讨.
Dabaoshan copper-lead-zinc-sulfur polymetallic deposit is a large-scale stratiform deposit hosted in the Devonian of northern Guangdong.At the beginning of the 1980s, many people conducted special studies on it, and affirmed the deposit from different aspects However, up to now, there are still many controversies about the cause of the deposit.The author thinks that the deposit was formed by the deposition of the Middle Devonian polymetallic ore body (or orebodies) by the Yanshanian magmatic hydrothermal Therefore, the deposit has some characteristics of sedimentary deposits and hydrothermal deposits, and there are some differences between them.Because of the geological characteristics of the deposit have been discussed in more articles, this article does not intend to go into details. The following only to thermodynamic conditions of hydrothermal mineralization as a preliminary study.