| The workspace is located in the northeast of the Erguna uplift, where is on the southern margin ofthe Heilongjiang depression. And its structure develops well, and the magmatic activity is frequent.With a strong mineralized alteration, the metallogenic geological conditions are favorable.The regional distribution of mainland layer are mainly Xinghuadukou group of Paleoproterozoic,Xiufeng group of the Jurassic and the Quaternary. The slate and schist of Xinghuadukou group ofPaleoproterozoic and the sandstone of Xiufeng group of the Jurassic are the main ore rock in the area.The fracture tectonic in the area develops well, which is mainly the NNW Fukeshan-Dalin RiverFracture. The fracture is north from the rich Keshan operations and south to the east coast of the DalinRiver,which is about15km long and3km wide. Within the fault zone, the fracture andmylonitization in the rocks developed commonly.The workspace exposed intrusive rocks widespread. The intrusive rocks are mainly the finegrained monzonitic granite and in the fine grained monzonitic granite of the early Ordovician-the lateCambrian, and the cretaceous granite, rock strain outputted. The vein rocks are the ultra basic rocks,fine grain diorite, granite diorite porphyry and so on. Among the rock strains and vein outputtedintrusive rocks closely associated with mineralization.The work is given priority to the1:50000stream sediment, which analyzed to7elements,including Au, Ag, Cu, Pb, zinc, As and Sb. The work was selected114elements anomaly totally,including the24anomalies of Au,15anomalies of Ag,12anomalies of Cu,16anomalies of Pb,12anomalies of Zn,23anomalies of As,12anomalies of Sb,14combination anomalies. Also wecarried out the Combination anomalies for verification. Then, one gold ore bodies was found only,which is around200m long and0.3－3.0m wide. A single sample for the highest grade is4.48×10-6. The type of the ore is the quartz vein type.On the basis of the distribution characteristics, correlation analysis and the factor analysis ofore-forming elements, combining of geological conditions, abnormal findings and existing mine sites toverify the information, the author thinks the workspace has the potential to search for the Au, Pb, Cu,Sb deposit and potential of mineralized bodies. Metallogenic types have many possibilities: One isrelated to granite body quartz vein gold deposit. The other is related to the Cu, Pb and Sb polymetallicdeposits of the metamorphic rock in the Xinghuadukou group of Paleoproterozoic and basic ultra basicrock. And then divided into7polymetallic metallogenic prospective areas, including rich Keshan, richKeshan Hexi, Dalin River gold mineralization prospect and Holo Taiwanese River, Holo Taiwanesered libraries River, Holloway Taishan copper and lead (antimony), Gulian Hedong polymetallicmetallogenic prospect7.From the perspective of the stream sediment geochemistry, the article discussed the elementdistribution and distribution characteristics, makes a research on the element type R cluster andfactor analysis. And multielement composite anomaly distribution characteristics were analyzed in thearticle.With the combination of regional geological metallogenic background and anomaly verificationresults of the inference interpretation, the author makes a prediction on the metallogenic. The researchproduction can guide prospecting in the region and it has important theoretical and practicalsignificance. |
PDF Full Text Request