Metallogenic Prediction Based On Synthesis Information For The Molybdenum Deposits In Xinsheng Area Of Heihe City, Heilongjiang Province

Xinsheng area of Heihe is located in the western slopes of Lesser Xing’an Range Mts,which located in the eastern part of the country of Mongolian orogenic belt, and near toNenjiang fracture south. On the basis of previous geological, geophysical and geochemicaldata, metallogenic prognosis theory were utilized to mineral exploration, and combining withresearch results of the Tongshan copper-molybdenum typical deposit. The anomaliesdelimited by geological, geophysical, geochemical and remote-sensing information methodand metallogenic prognosis are effectively analyzed in the studied area. It is an directindication to mineral exploration of the future.The stratum is a kind of well-developed geological body in, Paleozoic erathem andMesozoic erathem are widely exposed in the studied area. This Stratum is composed ofNeoproterozoic Erathem-lower Cambrian System, Ordovician System, Silurian System,Devonian System, Carboniferous System, Cretaceous System and Cenozoic Strata.TheMiddle Jurassic monzonitic granite and The Early Cretaceous volcanic rocks are the mainrock body in the studied area. The Early Cretaceous is in kind of acid hypabyssal subvolcanicrocks especially. It is of great significance to the formation of porphyry molybdenum deposit.Faulted structure activity is well developed, the fault system of the studied area is composedof NW, NE, SN and EW faults, and the distribution of mineral deposits occurs mainly in NECierbinhe and NW Yubianhe trending faults.The study of comprehensive prospecting marks shows that there is correspondingrelation between prospective areas and gravity gradient of gravitational field, and it is located positive aeromagnetic anomaly of calm negative aeromagnetic anomaly. Ground precisionmagnetic survey takes the form of positive magnetic anomaly. Based on1:50000streamsediment survey in this paper, Mo、Au、Ag、As and Sb is much greater degree of dispersion,it is highly likely that the concentration of ore element. This is subeconomic mineralizationrelated to higher levels of Mo. It is significant prospective area in register with the mainmetallogenic element. As the same time, it is of great significance to prospective areas forcircular structure border and the intersection of linear structure through remote sensing imageevaluation.Under the guidance of metallogenic predication theory, application of geological,geophysical, geochemical and remote-sensing information method in the study area, andcombining with research results of the typical deposit, three prospective areas for Xinshengarea of Heihe have been delineated which contain2points in grade Ⅰ and2points in gradeⅡ. Based on this, Xiaobeigou anomaly area were arranged with the1:20000geology, thehigh accuracy magnetic survey, IP intermediate gradient and geochemical soil survey. At thesame time, trenching has been carried out at anomaly area. The results show that twomineralizing bodies have been found in Xiaobeigou anomaly area, the wall-rock alteration iswide, its strength is large. Alteration minerals combination is complete. The measuring resultis being displayed, there are five pieces of geochemical samples achieve marginal grade, andthere is one pieces of geochemical sample achieve industrial grade, one molybdenum oreoccurrence have been discovered in the Xinsheng area of Heihe.The research shows that application of mine-site level for deposit prospecting andsynthetic information mineral resources prognosis are feasible and satisfying in the Xinshengarea of Heihe, which is providing new ideas for further mineral exploration.