Characteristic Of Primary Halos And Prediction Of Deep Ore-body Of The Caosiyao Mo Deposit,Inner Mongolia

Inner Mongolia molybdenum estimated reserves of more than 2 million t four killings,cao is one of the largest porphyry molybdenum deposit in north China.In order to deepen the understanding of ore deposit,this paper use the portable X-ray fluorescence spectrometer to direct deposit drilling core cao four killings in situ measurement,to obtain high density element geochemical data of 831,through the ZK0403,ZK1203 and ZK1603 three typical elements of the spatial distribution characteristics of drilling,zoning sequence and combination characteristics were analyzed,and the following main achievements and cogn ition:(1)Get three drilling 34 kinds of main vertical spatial distribution characteristics of trace elements,discovered Si,Al,K,Rb,etc is associated with light color distribution of mineral elements and Mg,Ca,Ba,Sr,Fe,Mn,Cr,Ti,V,Zr elements associated with the dark mineral distribution;The metallogenic elements of the metallogenic element,Mo,Pb and Zn,are distributed in various lithologies,indicating the continuous mineralization of orebodies.(2)The element subband sequence is from the center of the ore body to the peripheryMn-W-Sn-Mo-V-Ti-Ni-Fe-Pb-Zn-Cu-Bi-As(ZK0403,From shallow to deep)、Ni-As-V-Zn-Ti-Pb-Cu-W-Mo-Fe-Mn(ZK1203)、Ti-As-Nb-Ni-V-Fe-Mn-Mo-Zn-Cu-Bi(ZK1603);ZK0403 element zoning sequence in the high temperat ure of metallogenc element W,Sn,Mo distribution in sequence,the low-tem perature ore-forming elements Cu,Pb,zinc,As distribution in the lower part of the sequence,and ZK0403 Mo mineralization is produced in the upper metamorphic rock is consistent;ZK1203 element zoning sequence high,medium low temperature distribution and ZK0403 instead,reflect the deep granite is the zoning sequence of the center of the heat source,and ZK1603 zoning sequence has no obvious regularity,the change of zoning sequence indicating the from center to periphery rock magma hydrothermal activity and mineralizat ion degree of positive correlation.(3)The multivariate analysis of ZK0403 extracts the combination of Fe-V-Ti-Mn,which represents the metal-oxide metallogenic phase,and represents the combination of the elements of the metal-sulphide mineralization period As W-Mo-Bi-Pb,Mo-Zn-Pb-Cu-Mn-W,Cu-Ni-Zn,As-Fe-Mn.ZK1203 extracts the combination of element combination elements representing metal oxide metallogenic period as Fe-V-Ti,which represents the combination of elements of metal sulfide mineralization period as Mo-Ni,Zn-Pb-Mo-W,Mo-Pb-Zn.ZK1603 extracts the combination of element combination elements representing metal oxide mineralization period as Fe-V-Ti-Mn,and represents the combination of the elements of metal sulfide mineralization period as W-Mo-Bi-Ni,Mo-Pb-Cu,Sn,Cu-Ni-Zn.(4)Front halo elements appear in the bottom of the zoning sequence,tail halo elements appear in the upper,reflect the rule of zoning characteristics,elements(W,Sn,Mo)and elements(Cu,As,Bi)combination accumulation than the results in the transformation ratio in the ore body part pop up down,up,deep speculated that there may be a blind ore body extending down or the orig inal ore body is bigger,further summarizes the deep deposit prospecting marks.The results of this study provide some theoretical basis for further explora tion and deep prospecting of mineral deposits.