缅甸高林—文多地区金矿床地质特征与成因分析

高林-文多地区是缅甸中央火山弧带上金矿的集中产出区域,通过对高林-文多地区典型矿床介绍,总结出该区金矿化主要赋存于安山岩、闪长岩、花岗岩以及砂岩中,受NE-NNE向断裂以及NW向断裂控制明显,岩浆期后的热液活动与金矿化密切相关。矿床类型从西向东依次为蚀变岩型→石英脉-蚀变岩型→石英脉型的分带特点,反映了不同构造层次、不同岩性介质是确定矿床类型的重要因素。金矿体的形成在收缩挤压到旋转走滑的构造转换的背景下,岩浆活动萃取围岩中流体,在构造有利位置富集成矿。

Geological characteristics and genesis of gold deposits in Gaolin Wenduo area,Myanmar

The Gaolin-Wenduo area is a concentrated production area of gold deposits in the central volcanic arc zone of Myanmar.By introducing typical deposits in the Gaolin-Wenduo area,it is concluded that gold mineralization in this area mainly occurs in andesite,diorite,In granite and sandstone,the NE-NNE fault and NW fault are obviously controlled.The hydrothermal activity after the magmatic period is closely related to gold mineralization.The types of ore deposits from the west to the east are altered rock types→quartz veins-altered rock patterns→quartz vein types,which reflects that different structural levels and different lithological media are important factors in determining the type of the deposit.The formation of gold ore bodies is under the background of tectonic transition from contraction and compression to rotation and slippage.Magmatic activity extracts fluids from surrounding rocks and enriches ore deposits at favorable structural positions.