The Geological Characters And Mineralization Of Zhenghe Area In Fujian Province

The geotectonic position of the governance of Fujian area is located in the Western China fold system central Fujian rift zone, faults, the main direction of the tectonic line for North east. The magmatic activity is frequent, especially since the Mesozoic volcano activity more active volcano rock and a large area of contiguous distribution. And the study area belongs to the Wuyishan silver, lead, zinc, copper, gold, tungsten and tin mineralization belt in Southwest Zhejiang- Central Fujian rift gold, silver, lead and zinc polymetallic metallogenic belt. It is an important part of the Southwest Zhejiang- Fujian polymetallic metallogenic area, area found a large number of multi metal deposits and occurrences, the Pb Zn deposits and gold deposit is a typical, has traditionally been geologists think that is favorable metallogenic prospect area. This article will focus on structural aspects, through the formation of the ore deposits in the region and the law of mineralization, the future of prospecting work in the area, no doubt has a very important significance.In the study area, the shap and occurrence of gold ore body are obviously controlled by fracture structure, generally showing shap of vein, lens, net veined and branch, and the occurrence of orebody is basically same with the occurrence of fault fracture zone. Ore types are mainly the quartz sulfide type, secondly the tectonic altered rock type. The boundary line between ore body and wall rock is distinct and alteration zone of uneven width and intensity often exist near the gold ore veins. Sulfides like pyrite, galena, sphalerite and chalcopyrite are frequently associated in mineralized quartz veins. Close of wall-rock alteration and mineralization of skarn, chloritization, carbonate, silica, talcose, serpentine petrochemical. Due to the Silicon is generally strong, silicified rocks formed or silicified breccia. Deposit(mines) genetic types of porphyry, magmatic hydrothermal ore deposits, stratabound stack modification, hydrothermal alteration.The in Qingyuan of Zhejiang- Fujian Zhenghe area copper polymetallic ore research demonstration project based, using comprehensive survey of the field of regional mineral geological survey, geophysical prospecting, geochemical method, analysis in the study area in the geological features of the key, and discusses the tectonic evolution, volcanic activity and its relationship with mineralization. Based on the basic geological features of typical deposits in the study area, the control of the deposit in this area is summarized systematically, and the new understanding and progress are gained. Focus on the following aspects of the work:(1) North East rock group Dragon Creek group is a regional lead-zinc ore, and intense rock deformation and metamorphism. Rock group Dragon Brook to the North-East of the mamianshan group belongs to key stratigraphic logging system, identified a sequence of volcanic rocks, divided the period of magmatism, explores the origin and evolution of magma.(2) To structure for main means, combined materialized exploration method, on research district of into mine for integrated research, found has in governance and-Po NE to deep big fracture and Pucheng-Ningde NW to deep big fault sides of formation was different degree of deformation, formed toughness shear with and the and of phase supporting of linear of geochemical integrated exception, obtained has structure for into mine of has strongly of control role of awareness.(3) Study area is located in Wuyishan metallogenic belt and Southwest- central Fujian rift gold and silver lead-zinc mineralization sub-band, it has been found with acidic volcanics and porphyry-related gold, lead, zinc, silver and other deposits(point) multiple. The distribution of large amounts of volcanic basin, a large area of exposed volcanic rocks, is relatively acidic porphyry development, potential mineralization and the mineralization prospect area was predicted. According to the geological setting, ore-controlling conditions and metallogenic regularity, divided into three key areas prospect area: Lions lead-zinc mine prospecting targets Kong, Queen Mother of the gold deposit prospecting targets, falling foreign polymetallic prospecting targets.