STUDY ON FLUID INCLUSIONS OF THE XISHANWANYANGCHANG SILVER POLYMETALLIC DEPOSIT, INNER MONGOLIA

摘要

The Zha’ertaishan Area, lied in midwest arearnof Inner Mongolia, is located in the east section ofrnLangshan-Zha'ertaishan mesoproterozoic rift zonernof the northern margin of the north china plate.rnExposed strata in it are mainly composed of the laternArchean, middle Proterozoic, Mesozoic andrnCenozoic. Intrusive rocks are mainlyrnmetamorphosed Mesoproterozoic intrusive rocks,rnintrusive rocks of Cambrian, Ordovician intrusivernrocks, intrusive rocks of Permian and Triassicrnintrusive rocks. The direction of max primary stressrnis near east-west for structure, and a NEErncompression in the west part of studied area, arnNWW compression in the east part, and it is an arcshapedrnand projects in the N direction trend to nearrneast-west in the middle. Lower Cretaceous volcanicrnrocks outcrop larger, and they are principallyrndistributed from Nanwangrudi tornXishanwanyangchang spreading out in near SN,rnand Volcanic fissure eruption was on the whole.rnThe rocks are made of mafic volcanic rocks ofrnJinjiayaozi formation and acidic volcanic roks ofrnBainuyangpan formation, showing of mafic - acidicrnevolution from south to north, which appeared asrncopper polymetallic - zeolite, bentonite, perlite -rnsilver (fluorite) - gold (silver) metallogenic seriesrnfrom south to north, as a mineralization zonation inrnvertical distribution along volcanic belt.