Deposit Characteristics Of The Huyanqingshan Iron Deposit In Linqiu County,Shanxi Province And Application Of The Ground High-Precision Magnetic Method

The Huyanqingshan Iron is a typical sedimentary metamorphic concealed iron oredeposit in Wutaishan area, and is expected to form a large iron ore deposit. Consideringexploration and development from the sedimentary metamorphic iron ore of the importantrole in the development of industry in Shanxi, based on exploration and research of thepast Huyanqingshan iron ore, this paper used the ground high-precision magnetic surveytechnology，after careful researching and analysising，decomposed of aeromagneticanomalies and delineated prospecting target area.And this paper puts forward reasonableand effective working methods and train of thought, and provides effective referencemethod for the same type of sedimentary metamorphic type of concealed iron ore depositprospecting work. Obtaining following main understanding and the results:(1)The Huyanqingshan Iron in Linqiu county,Shanxi Province locateds in thecombining section of Yanshan settle-zone and the eastern end of Shanxianteclise-Hengshan upwarping zone. Its ore-hodted horizon is The Wutai Group,ShijuSubgroup,Jingangku Formation，It is sedimentary metamorphic ore deposit type magnet.The ore body appears in bedded,near bedded，with simple shapes，stable thickness.Andcontact of orebody and wall-rock is conformable，The boundaries are clearly.All of orebodys are concealed， iron induces magnetic anomaly.(2) Through ground high-precision magnetic survey work in the study area central,circles5magnetic anomaly ranges. Magnetic anomaly，located in the central area，iseast-west，and from west to east development. The variation characteristics of the abnormalarea and amplitude is increasing from west to east. High magnetic anomaly zone on bothsides of north and south have north-east magnetic gradient belt.(3)Based on the analysis of reduct ion-to-po leand upward continuation，Explained theanomaly from the quantitative,qualitative and geological three aspects,and determined thatis the4areas are key areas for ore prospecting. This provided geophysical foundations formineral prospecting.(4)To study and compare semi-quantitative explanation from the three high magneticanomalys named M4-1,M4-2and M5with the deep drilling verification results,and findthat the magnetic anomalys are all caused by the magnetic iron ore body. The orebodyoccurrence location from semi-quantitative explanation and deep drilling verification isconsistent. In this article,the research method of the ground of the high precision magnetic survey can better decompose aeromagnetic anomalies, looks for favorable prospecting,provides more effective method for this kind of concealed iron ore deposit exploration.