论广西老厂铅锌矿的矿床类型

Discussion on the Classification of the Laochang Lead-zinc Deposit of Guangxi

在岩浆-热液斑岩系统中可能出现的矿床类型有多个。斑岩相关背景中的科迪勒拉型或者Butte型多金属矿化已知存在于很多地区。然而,在国内矿床学界,似乎很少把科迪勒拉型矿床作为一个矿床类型。因此,应该对国内的一些矿床开展研究,研究这些矿床是否可以归入科迪勒拉型矿床的范畴。位于南岭成矿带的老厂铅锌矿,是广西东北地区重要的铅锌矿产地。在本文中,笔者把该矿床的特征与科迪勒拉型矿床的特征进行了对比,发现老厂铅锌矿床的多个特征与科迪勒拉型矿床的特征相符,因此认为老厂铅锌矿床可能属于科迪勒拉型矿床。

Several types of ore deposits can occur in magmato-hydrothermal porphyry sytems. Cordilleran type or Butte type polymetallic mineralization in a porphyry-related setting is known in numerous districts. However, in the domestic academic circle on ore deposit geology, it seems that Cordilleran ore deposits have rarely been taken as an ore deposit type. Therefore, research should be carried out on some domestic ore deposits in order to find out whether these deposits can be classified into Cordilleran ore deposits. The Laochang lead-zinc deposit, which is located in the Nanling metallogenic belt, is an important lead-zinc area of northeast Guangxi. In this paper, the author has compared the characteristics of the Laochang deposit with those of Cordilleran ore deposits and found that several characteristics of the Laochang deposit accord with the characteristics of Cordilleran ore deposits. So it is proposed that the Laochang deposit may belong to Cordilleran ore deposits.