The Application Of Iron Polymetallic Ore Magnetic Prospecting On Yajia-ruwen Survey Area In Hainan

Ruwen-Yajia survey area is located in the southeast of Shilu iron deposit which is thefamous large iron deposit in China; it is the important target area of Shilu replacing resourcesprospecting. Because of the instrument with little accuracy, small scale, single abnormalinterpretation and lack of engineering verification, the geological condition is still no clear. Socarry out the high precision and large scale magnetic survey, the comprehensive interpretation ongeology, geophysics and geochemistry that is meaningful for finding new ore body, extend thelife of ore and achieve sustainable development.The basic geology, mineral geology, geophysical exploration, geochemical exploration,aeromagnetic, gravity and remote sensing data were collected in this essay, and then make asynthesis of previous results, based on the iron as the main mineral to carry out the1:10000ground precision magnetic survey of35km2and1:5000magnetic profile measurement of10km.complete17359actual measurement points and520checking points and305samples, includingthe whole geological units in the survey area,33samples were checked while the checking rateis10.82%.To detect the precision magnetic survey instrument and establish the base-point net, thendoing the qualitative and quantitative interpretation on the actual survey data, comprehensiveinferred interpretation based on the previous geological survey and soil survey and the CSAMTsurvey results.7magnetic anomalies (CT6-CT12) were found by the high precision magnetic survey, TheCT6and the CT7have good prospecting potential, while the others were caused by the shallowmagnetic object. The inferred fault is F1which provides the evidence for the further work.To establish the prospecting model and find out the prospecting target based on theComprehensive utilization on the geophysical and geochemical exploration and geologicalresults.