摘要
公婆泉铜矿床受岩性和构造的控制较为明显,矿体主要赋存在花岗闪长斑岩和英安玢岩中,韧性剪切带和火山机构控制着含矿斑岩体的空间分布规律,而斑岩体既是铜矿体的成矿母岩,又是矿化的围岩;矿体具成群、成片产出的特征,矿石组构较简单;矿床的围岩蚀变极为发育,从矿体中心向外侧具有“绢英岩化带→钾化带→青磐岩化带”的变化规律。在今后的找矿勘查工作中,应加强韧性剪切带中以及交汇部位的找矿勘查工作。
Gongpoquan copper deposit is obviously controlled by lithology and structure.Orebodies mainly occur in granodiorite porphyry and daciteporphyrite.Ductile shear zone and volcanic mechanism control the spatial distribution of ore-bearing porphyry,and porphyry is not only the ore-forming parent rock of the copper deposit,but also the surrounding rock of mineralization.The ore bodies are produced in groups and patches,and the ore fabric is simple.The alteration of the surrounding rock of the deposit is extremely developed,and from the center of the ore body to the outside,it has a change rule of sericitization zone→potassic zone→bluvitizationzone.In the future prospecting and exploration work,it is necessary to strengthen the prospecting and exploration work in the ductile shear zone and the intersection area.
作者
付全
FU Quan(The fourth Institute of Geology and mineral exploration,Gansu Bureau of Geology and mineral exploration and development,Jiuquan 735000,China)
出处
《世界有色金属》
2021年第8期86-87,共2页
World Nonferrous Metals
关键词
铜矿床
地质特征
控矿因素
北山造山带
公婆泉
copper deposit
Geological characteristics
Ore-controlling factors
Beishan orogenic belt
Gongpoquan
