摘要
柬埔寨王国磅通省三丹县地区的整体地质工作程度较低,对该地区已有金矿床(点)成矿地质条件的研究对于该区域金矿勘查具有重要意义。本文详细阐述了三丹县金矿床(化)的成矿地质要素,并与IRGS型金矿进行了对比研究,认为陆缘弧和弧后克拉通盆地接触部位的大地构造背景和钙碱性区域岩浆岩条件,为区内金矿化提供了有利的区域地质条件,这与典型IRGS型金矿床具有相似的构造背景。调查区内的金矿体(矿化)常发育在侵入岩及其边缘地带,在空间分布上金矿化与侵入岩关系密切,且围岩常具石英-碳酸盐-绢云母化围岩蚀变组合,金矿石以网脉状和角砾状类型为主,这符合IRGS型金矿的矿化特征。初步认为区域内金矿化与侵入岩关系密切,属于IRGS型金矿。
The overall level of geological work in Sandan County of the Kingdom of Cambodia's Kampong Thong Province is relatively low,and the study of the geological conditions for the existing gold deposits(points)in this area has important guiding significance for gold exploration in the region.This article provides a detailed explanation of the ore-forming geological elements of the gold deposits(mineralization)in the survey area,and conducts a comparative study with IRGS type gold deposits.It is inferred that the tectonic background and magmatic rock conditions in the calcareous alkaline region of the contact area between the continental margin arc and the backarc craton basin provide favorable regional geological conditions for gold mineralization in the area,which has a similar tectonic background to typical IRGS type gold deposits.The gold ore bodies(mineralization)in the survey area are often developed in intrusive rocks and their marginal zones.In terms of spatial distribution,gold mineralization is closely related to intrusive rocks,and the surrounding rocks often include quartz carbonate sericite alteration combinations.The gold ore is mainly in the form of network veins and breccia,which is in line with the mineralization characteristics of IRGS type gold deposits.It is preliminarily believed that the gold mineralization in the region is closely related to intrusive rocks and belongs to the IRGS type gold deposit.
作者
周鑫
邬喜春
王傲雷
李乐天
ZHOU Xin;WU Xichun;WANG Aolei;LI Letian(Jiangsu Branch of China National Geological Exploration Center of Building Materials Industry,Nanjing,Jiangsu 211135)
出处
《地质与勘探》
CAS
CSCD
北大核心
2024年第2期425-432,共8页
Geology and Exploration
关键词
金矿
IRGS构造背景
矿体特征
成矿地质条件
三丹县
柬埔寨
gold deposit
IRGS tectonic setting
orebody characteristics
metallogenic geological condition
Sandan County
Cambodia
