| Magnetite deposit is located in White River pubs ditch Indo-China, South Qinling fold belt Jinjiling-Fung Kwan left side and fold beam Southeast Baishuijiang-Shirakawa fold beam northeastern margin of the contact zone, belonging to the South Qinling Hui County-Xunyang stratigraphic area. It is a magnetite deposit found in the Southern region found in the new exploration, which is the same type of Zhanghe River magnetite and Pingding River magnetite in the west side, and they together constitute an E-W belt. The distribution was like belt, with a length of about 40km,north-south width of 2.5km,and an area of about 100km2. According to field investigation,four of magnetite ore had been found in this area,and the average grade of TFe is about 20%,also with 7 limonitization body. All of the discoveries implied a great potential economic value.This paper relies on the latest achievements of the White River area pubs ditch of 1:1 million magnetite Mineral in Baihe County of Shanxi Province from 2007 to 2009 and the magnetite formation is divided for determining the structural framework; With the study of the mining area of deformation within the ductile shear zone, movement, evolution, we conclude that the shear zone in the study area is the main ore-controlling factors of magnetite. Thus it initially sets forth the geological conditions and their causes of magnetite ore deposit and explore their metallogenic and prospecting potential. Main achievements of this paper are as follows:1. With the belt region is divided into North and South, that all wings of a reverse syncline, roughly symmetric distribution. With Middle Devonian second lithologic (D2S2) mainly divided into two belt, with 4 delineated magnetite body,7 limonite of body. Minerals are mainly magnetite, followed by limonite and trace pyrite,chalcopyrite, pyrrhotite, hematite, ilmenite. The main ore structure for its shape-half from the shape of granular structure to the main bandedstructure, block structure second.2. The north-south mining area of the belt were controlled by two ductile shear zones from east to the west, and the shear zone has been through a number of deformation, with obviously three main:During the early one the mylonite belt was formed, which is equivalent to low-amphibolite facies metamorphism, S-C fabric was also found, in the vertical tensile direction there are felsic veins, shear zones in southern ore was left transtension of shear, shear zone north of ore for the right line of pressure-shear shear,σ1≈192°∠10°, Ancient stress value of about 19.2MPa; two ore shear zone experienced a mid-line of the right of ductile-brittle shear-shear effect, the formation of shear folds and sheath folds, and a quartz vein filling,σ1≈36°∠15°ancient stress value of about 0.42MPa; late brittle transtensional experienced weak, showing a strong quartz vein partial fragmentation.3. With the region's geological background and analysis of geological conditions, we conclude that the White River magnetite deposits pub trench formation and development has gone through three stages:The first stage (the formation of siderite phase), in the Middle Devonian Shijiagou group of normal deposition of iron in aqueous carbonate material in the reducing environment formed by regional metamorphism and fine-grained siderite; The second phase (fine-grained magnetite formation stage), the formation of fine grain siderite in the regional metamorphism role and the role of early ductile shear superimposed formed part of fine magnetite; The third stage (the formation of coarse-grained magnetite phase), early formation of fine-grained magnetite in the post-shear of ductile-brittle shear and the participation of late metamorphic hydrothermal activation, migration, and toughness to the ductile-brittle transition in the site enrichment andmineralization.Ore-controllin-factors ore body showing composite overlay of "stratabound+ fold+ ductile she ar zone, " The causes of it were genesis of sedimentary metamorphic type-dynamic transfor-mation of complex hydrothermal iron deposits.4. The area's most promising regions are South mineralization belt containing the Fe2, Fe3 ore body and mine the same structural layer adjacent to the west bit, using regional geophysical and geochemical data, combined with knowledge of geological research, and comprehensive analysis.
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