Study On Metallogenetic Regularity Of Erdaogou Gold Mine In Western Liaoning Province

Erdaogou gold mine in western Liaoning province is directly under china’s gold corp, people adopting already has a long history, with the development of formal mining, in recent years, mining reserves has bordered on machine line, influence the mine’s normal production, increase reserves is very important. This paper collects and studies a large amount of previous research achievements, through on-the-spot investigation, research Erdaogou gold mine’s strata dew, magmatic rocks outputing and gold veins’distribution, etc, and use the geochemical analysis, summarized gold metallogenic regularity, construct the metallogenic model, to provide certain theoretical basis on finding new target area.Erdaogou gold mine situated on the north of North China platform, and on the north of Inner Mongolia axis. Little tazi ditch group volcanic rocks composed of inner crystalline basement floor in metamorphic in Archaean group. Paleozoic-Mesozoic-volcanic rocks are cap rock. Erdaogou gold mine locate the intersection of north east JianPing-MaHugou and north west BeiPiao-JinChangliang shear zones. Much of the vein of the gold ore are quartz compound vein type, main mineral contains quartz, pyrite, chalcopyrite, gold-carrying minerals mainly for pyrite, quartz; eposit of mineralization and altered many stage additive. Through the study of Comples rock intrusion, structure and deposit, we confirm that Erdaogou gold mine is lava hot liquid gold deposits, also existence follows ore-forming regularity:1. Through the study of the material sources of the gold mineralization, ore-forming materials are from Xiaotazi metamorphic strata of Jian-ping group.2. Almost all the gold in the space has close relationship with indo-chinese-yanshanian of adamellite series of rock matrix, construct control deposits obviously, mineralization good at tectonic cross parts, such as2,21veins is hosted by intersection area, grade rise when veins in the thickness of the ore bodies. 3. The geochemical isotope age testing show that the time of mineralization mainly is late Jurassic to the early cretaceous.