Geological Characteristics And Prospecting Of Taiping Gold Mine

Between Mesoproterozoic and Neoproterozoic,there were two great Rift zone in the west of the northe margin of the north China plates,where deposit the baiyunebo group and the Zhaertaishan group.There are many Large-scale mineral that contain Metal,non-metallic,precious metals in the Rift zone.This is Most famous one of the metallogenic belts.Taiping gold mineral is located in baiyunebo group.It is Large-scale mineral and found in the recent year.Altough this gold has been mined for many years,there is little Geological work and many questions that what is its ore-controlling factors and the ore body causes is still no uniform conclusion.The main purpose of this paper are:(1) identification of regional tectonic setting, the dynamic evolution of conditions;(2) Analysis of the ore-forming conditions, ore-controlling factors of the main causes of deposits;(3) Deposits positioning mechanism, focus on the Orefield deposit structural characteristics with the dynamic evolution of the process;(4) To identify the favorable ore-forming parts of the deep edge of the ore field, pointed out that the favorable prospecting prospective areas.On the basis of previous geological work,the author have a comprehensive understanding of this gold mines tough the mine drilling, trenching, geological mapping and some of the experiments,so the author get the following conclusions.This is located in the north margin of the North China plates. On the whole,this area is between Inner Mongolia-Daxinanling collision orogenic belt and North China plates.Tough this study,The evolution of the regional tectonic stress field of the gold is divided into four times.the first and second time are the north-south horizontal compression.the third time is the north-east horizontal compression.The fourth time is the east-west horizontal compression. Changes in the four stress field shows the tectonic changes in the environment. The extrusion subduction between Inner Mongolia ocean and the North China plate became into extrusion subduction of between Pacific oceanic crust and the North China plate.The gold belongs to the Medium-low temperature hydrothermal deposits. The gold is mainly controlled by the first rock section and the second rock section of the Bi Lute group. The ore bodies is mainly located on the tensile shear fracture surface,showing Mitsubishi shape, serrated.The first rock section and the second rock section of the Bilute group deposited a large number of metal sulfides and organics in late Proterozoic. In Late Caledonian, some of the interlayer sliding and fracture were produced because of the strength of the differences between the Bilute rock group rock,affected by tectonic stress.Then, deep crustal source material to the formation of weak surface or along the stress fracture channel invaded. Variscan tectonism made fault activity in the region intensified and occur a large area of magma intrusion. At the same time,Metal sulfide-rich gold-bearing hydrothermal fluids migrate upward along the tectonic fracture channel.It was extracted by sulfide and organic in Bi Lute rock group the first and second rock section. It deposited by the form of sulfide-quartz veins along the rock schistosity, bedding and fractures precipitation and enriched,and then the gold minal formed. Ductile shear zone in this region,magmatism of the region and the organic component of the Bilute group constitute the necessary elements of the gold.