Geological Characteristics And Genesis Of The Tanshang Mo(Au)-polymetallic Deposit In Daixian,Shanxi

Daixian of Shanxi province along the beaches of molybdenum,gold-polymetallic deposit,located in the South-West of the ore,including gold and silver polymetallic ore and molybdenum-polymetallic deposits on the beach,was discovered by exploration work in recent years with huge ore-forming prospect of molybdenum,gold-ore mining area.In this paper,through a systematic summary of the beach area,the geological characteristics of molybdenum polymetallic ore deposit,in order to study the beach area of molybdenum,gold polymetallic deposit metallogenic geological background,metallogenic characteristics,analysis of ore-controlling factors of the deposit,put forward a preliminary understanding of the genesis of the deposit,made the following main progress:1.The beach area of Yanshan in Daixian has frequent activities,Yin Jia Hui-Beach-a small southern North West to the fault zone and Beach-Ma NNE fracture zone distribution of magmatic rocks in the region of the control.2.Molybdenum,gold polymetallic ore zone is mainly distributed in the inner contact zone of the volcano mechanism of feldspar and quartz porphyry and metamorphic rock outside of the gravel feldspar quartz rock,orebody shape generally lenticular,bedded.3.Research shows that structure of ore,ore structure,structure of this area is complex,generally a palimpsest,granular texture,porphyritic texture.Structure is mainly veinlet structure,mesh-vein structure.Ore minerals in thin vein and quartz veins along the joint penetration of symbiosis,or a combination of net vein fissure mass produced in the ore.Gold,lead-zinc ore natural type can be divided into:metal sulfide type,a type of ore.Molybdenum ore natural type is various,according to the structural characteristics of ore structure,can be divided into disseminated and veinlet-stockwork ore.4.After a comprehensive analysis that this area of the main ore-controlling factors for structuring and intense magmatic activity.5.Research results obtained by the comparison of the previous,determine the mineralization occurred in Early Cretaceous,which belongs to the Yanshan period.The main formation and diorite,quartz porphyry and other large-scale gold,the polymetallic mineralization.6.Through the research work,think deep prospecting in the area has great potential.