Metallogenic Geological Conditions and Prospecting Model of the Hulunxibai Gold Deposit in Ejinaqi, Inner Mongolia

Study area is located in Jungger metallogenesis province,eastern of Baerluke-santanghu Paleozoic and Mesozoic CU,Au metallogesis belt.Tectonic belongs to Tangbale-Kalamaili Paleozoic fossa-arc belt.The stratum is mainly the combination of Ordovician intermediate-basic volcanic rocks,Volcanic clastic rocks,and normal elastic rocks.The Devonian is the combination of terrigenous deposit roeks,lava,and volcanic elastic rocks.While the Carboniferous is the normal elastic rocks and volcanic elastic rocks.The intrusive rock in the study area was mainly formed in late Variscan,having a characteristic from basic to acid.The faults and folds are well developed,providing the space for deposits.Based on the distribution characteristic of Au-Cu minerals in various stratum units,we summarize the metallogenic law of Au-Cu mineral deposits,showing that the formation of Au-Cu mineral deposit is directly related to tectonics,regional structures,and magmatic activities.