The Characteristics Of Tectonic Ore-control And Ore-bearing Structure Discriminate Of Fluorite, Chifeng Area.

Chifeng area locates in the intersections of Paleo-Asian tectonic metallogenic province and Bin-Pacific tectonic metallogenic province, and belongings to the Northern North China block in the eastern and Southern section of Daxing'anling according to tectonic position. By the theory of Geomechanics, Chifeng area is at the interlock position of EW direction Tianshan - Yinshan latitudinal tectonic belt and the NNE direction of the new China structural system.The ore-bearing rock of fluorite mine in the study area are mainly constituted by volcanic rocks of Jurassic and intermediate-acid intrusive rocks of early Yanshan period, which are composed of three-quarters of the total. Fluorite mines mainly formed in the late Yanshan period, most of which are medium-low temperature hydrothermal fissure filling deposits.The NNE regional structure belts are main ore-controlling structure of the fluorite mine in this district, most fluorite mine distributed in the NNE fault zone or the intersection areas of NNE with EW and NW ones.The fluorite mine in Chifeng are mainly controlled by fault structures, and keep up with each other perfectly in occurrence, formed the shape of veins, lenticular and irregular lenticular. The ore bodies'extension direction along with NE-NNE, NW-NNW, SN and EW as secondly.Fluorite mine's vertical zoning pattern is set up according to the shape of ore bodies, ore texture and structure, mineral composition and surrounding rocks alteration. Taking the veins interpenetration relationship in count, summary the multi-phase active features of fluorite mineralization in the area.Multidisciplinary acknowledges such as Geology, Geophysical and Geochemical and different methods are referenced for the thick-covered loess conditions. On the basis of survey, summarized the structural ore-control characteristic, mineralization and prospecting law, primary prospecting section. Then use VLF, EH4 and High-precision magnetic survey to make known of the tectonic zoon characteristics in plant and depth, added Geochemical method such as X-ray, expected to distinguish the fluorite-bearing structures.