肃北县北东金矿含矿构造及找矿分析

北东金矿位于霍勒扎德盖—红石山华力西期金、钨、铜、镍、铁成矿带内,矿床成因类型为岩浆期后中—低温热液石英脉型金矿床。矿体赋存形态与岩浆岩和构造密切相关,严格受岩浆岩体和构造控制。本文通过对矿山生产中揭露的矿脉和构造进行分析,初步认为含金石英脉赋存在岩体内两组斜交的张扭性构造带内,根据构造特征和岩浆岩体的分布范围,预测矿体的赋存部位,指导探矿生产。

Ore-bearing structure of Beidong Au deposit in Subei of Gansu and its prospecting analysis

Beidong Au deposit is located inside Huolezhadegai-Hongshishan Variscan Au-W-Cu-Ni-Fe metallo-genic belt.The deposit is a post-magmatic intermediate-low temperature hydrothermal quartz vein type gold deposit.The occurrence of the orebodies is closely related to magmatic rocks and structure,and its form is strictly controlled by magmatic rock mass and structure.This paper analyzed the ore veins and structure which were exposed in the producing process of mine.The authors presumed that the gold-bearing quartz veins occurred inside the two heterotropic sets of tenso-shear structure belts.According to the structure characteristics and the distribution range of magmatic rock mass,the paper forecasted the occurrence location of the orebodies,and it might have implications for guiding production.