The Study On Ore Deposit Geological Feature And Metallogenic Prediction Of Red Rock Phosphate Deposit In Mianzhu City

The"shifangtype"phosphaterockisatypical sedimentary phosphate deposit in China.It has special profile structure,thick layer,rich taste,and svanbergite.Therefore,this paper selected relatively typical"shifang type"in mianzhu-mianzhu red rock phosphate rock,based on a detailed survey projects,by field survey,drilling,and constraining,doingdetailedresearchontheoredepositgeological characteristics,geological characteristics of ore bodies and petrological features,and discusses metallogenic regularities,for improving the mianzhu red rock phosphate rock bed reserves to seek a certain prospecting direction,also provide certain theoretical basis for seek phosphate rock in the region.The main recognition:?1?The ore body was deposited in the Devonian system shawozi group first section?D₃s¹?,and the bottom plate of the ore body is the third section of the sinian light shadow group?Z₂dn³?,the paleokarst erosion layer of the dolomite.The roof of theorebody isthe second section?D₃s²?"sand"dolomite.Theoredepositisatypical"shifangtype"phosphate rock,apper layered,stratified output,the occurrence of the ore body and the stratum is basically coincide,fault strick is the north eas-south west,lend to north north east,angle 16°⁶8°.?2?F₇ thrust is the largest fault in mining area,that's also the reason why the ore layer is repeated.?3??#ore body on seam strike,nearby exploration lines P17 and P09 are the thickest ore bodies.Ore body gradually thinned to the south.On the tendency,The ore bodies close to the north west of each exploration line are relatively thick and unsealed.Based on?#ore body predicting two vision area and1 pinchout area.?4?Prospecting marks:The bottom of the rock strata is the karst erosion surface,and the ore layer has not obviously stratified,mainly the breccia,mixed and disordered.The breccia is usually unmoved,present half angular-angular,and a small amount of breccia is a harbor shape.The filling material of the breccia is poor,and the mud and sand are both.There are a small number of layers in the rock layer.