Characteristics Of Crypto-explosive Breccia Type Polymetallic Deposit At West Slope Of Da Hinggan Range South Southern Section, Inner Mongolia

Da Hinggan Mountains in the southern section is the most important polymetallic metallogenic belt, is of hydrothermal vein type and the skarn rock type deposit, and cryptoexplosion breccia type gold deposit rarely. In recent years in Daxing in the southern section of the western slope of Weilasituo and courtyard area were found containing ore cryptoexplosive breccia pipe, which is hidden quartz porphyry bodies emplacement of the direct product. Cryptoexplosive breccia type mineralization is mainly affected by cryptoexplosion breccia pipe control by cryptoexplosion angular conglomerate deposit a dew characteristics, lithofacies zoning and metallogenic characteristics of, think cryptoexplosive breccia pipe as the ore-forming fluid aggregation and precipitation of ore-forming material unloading an important place and and porphyry type deposit and hypabyssal epithermal vein type deposit closely related, constitute the a complete metallogenic system. The formation mechanism of cryptoexplosive breccia are summarized.Two mines in cryptoexplosive breccia structure is a newly discovered a kind of ore controlling structure, exposed in the mining area of the Western Hills, area are not was cylindrical, breccia pipe weathering yellowish brown, limonitization strongly clasts are mainly strata breccias and breccia, was angular, angular, breccia ranging in size, breccia is ore bearing hydrothermal cement.The mineralization is mainly distributed in the breccia cements, occasionally native flash zinc mineralization, with typical cryptoexplosive breccia characteristics.Cryptoexplosion angle of primary halo conglomerate type ore was studied, the front halo elements as, Sb, Au; near ore halo elements Pb, Zn, Ag, Hg, CD; rear halo elements of W, Sn, Bi, Mo, Cu. Finally, the metallogenic prediction was carried out according to the characteristics of primary halos.The mineralized crypto-explosive breccia pipe is caused by the intrusion of quartz porphyry in Bianjiadayuan mining area. Study of the characteristics of primary halo showed that: Front elements are As, Sb, and Au; proximal elements are Pb, Zn, Ag, Hg and Cd; tail elements are W, Sn, Bi, Mo and Cu.