广西钦甲铜锡矿中的符山石研究

Study on Vesuvianite in Qinjia Copper-Tin Mine, Guangxi

摘要: 钦甲铜锡矿床位于滇–琼缝合带内，特提斯构造域之中，在个旧–文山–德保锡钨多金属成矿带东段。在研究工作中，发现了围岩中典型的矽卡岩矿物——符山石，它对矿床的形成及下一步找矿工作具有重要的指导意义。本文结合岩石学、地球化学对符山石进行研究，确定矿床中的符山石为富铝符山石，与成矿岩体和矿床中的矽卡岩一致。符山石主要分布在退化蚀变阶段，属于含水矽卡岩产物，并与矿床的矿化有着密切的联系，可为矿物形成提供有的条件，作为找寻类似矽卡岩型多金属矿床标志之一。

Abstract: The Qinjia copper-tin deposit is located in the Yunnan-Qiong suture zone, the Tethys tectonic domain, in the eastern part of the Gejiu-Wenshan-Debao tin-tungsten polymetallic metallogenic belt. In the research work, the typical skarn mineral vesuvianite in the surrounding rock was found, which has important guiding significance for the formation of the deposit and the next prospecting work. In this paper, combined with petrology and geochemistry, the vesuvianite is studied, and it is determined that the vesuvianite in the deposit is aluminum-rich vesuvianite, which is consistent with the skarn in the metallogenic rock mass and the deposit. The rock is distributed in the stage of degradation and alteration. It belongs to the product of hydrous skarn and is closely related to the mineralization of the deposit. It can provide some conditions for the formation of minerals and serve as one of the signs for finding similar skarn-type polymetallic deposits.