| This work is based on the collection of regional geology and geological data of the mining area.Based on a large number of detailed geological work,this work is divided into some aspects:ore body characteristics,ore characteristics,ore body roof and floor features,rock alteration characteristics,mineralization stages and so on,the geological characteristics of Hulugou gold deposit are studied in detail.In addition,on the basis of the comprehensive study of the relationship between the deposit,magmatic rocks and tectonics,the metallogenic regularity of the Hulugou gold deposit is summarized,and some direct and indirect prospecting indicators are put forward.The exploration and evaluation of the Hulugou gold deposit and the further prospecting work in the area and outside the area have provided the theoretical basis.The main results are achieved as follows:(1)Similar to most of the micro-infested gold deposits in the northwest of Sichuan,the Hulugou gold deposit is characterized by a certain stratification.Ore bodies tend to occur in specific rock assem-blages,both in the area and in the local area.The relationship between ore and strata has a certain cause.(2)The three major ore bodies of the Hulugou gold deposit are controlled by a certain stratigraphic lithologic assemblage and tectonics.The regional deep fault belt(lotus leaf fault)controls the overall distribution of metallogenic belt,and the gold ore body is controlled by the fracture,fracture and joint in different directions in the brittle-ductile shear zone.(3)The geochemical characteristics of the Hulugou gold deposit show that tectono-magmatic activity plays an important role in controlling mineralization,and there may be signs of deep fluid involvement in mineralization.The major and trace element geochemical studies of the rich rock slate and granite porphyry show that the ore elements such as Au,As,Ag,Hg,Cu,Fe,Zn,S and Sb are highly enriched,Au-(Fe+S)-Ag-Sb and As-Hg,which are in agreement with the mineralization characteristics of pyrite,stibnite and arsenopyrite in the deposit,and they are closely related to gold mineralization.The Gulougou gold deposit,although the surface veins exposed less,but the land,material,chemical,remote and other information,the depth may have hidden rock there.Magmatic activity not only provides heat source for mineralization in the area,but also provides some of the main ore-forming materials(magmatic water source and mineral source).The metallogenic conditions of Hulugou area are favorable,the ore-forming conditions are good,the mineralization information is obvious,and the ore-forming conditions of medium-large fine-disseminated gold deposits are formed,and There are a large number of geochemical anomalies in the deposits,and there are great potential for prospecting.In recent years,in its peripheral and deep ore prospecting breakthrough and further expand the prospecting space. |
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