Spatial Distribution Characteristics Of Copper Ore Bodies In The Peripheral Area Of Huitongshan Gansu Province

Huitongshan Copper Mine is located at the joint of Kazakhstan plate and Tarim plate.Late Triassic plate collision and docking resulted in large-scale magmatic intrusion.Early Yanshanian brick-red granite intruded into marble of Huaniushan Group of Middle and Lower Ordovician,and formed SKARN-TYPE copper deposit in contact with marble.The surrounding ore bodies of Huitongshan Copper Mine mainly occur in the outer contact zone between Indosinian brick red granite and Ordovician marble,and are controlled by serpentinized marble zone and interlayer faults of the Upper Ordovician Huaniushan Group(O_1-2hn^c).The Indosinian brick-red granite intruded into marble along faults,forming serpentinization,skarnization and copper orebodies in the depressions on both sides of the tongue-shaped protrusion of brick-red granite in the contact zone.Based on the current situation of prospecting work in crisis mines in China,and on the basis of in-depth study of geological characteristics,remote sensing alteration information,geochemical characteristics and deep geophysical information of Huitongshan Copper Mine,the distribution characteristics of strata,structures,intrusive rocks and wall rock alteration in the study area are identified through1:10,000 and 1:2,000 geological mapping on the periphery of Huitongshan Copper Mine.The terrace and high precision magnetic survey work delineates IP1 and IP2planar IP anomalies and 8 magnetic anomalies;further IP sounding work is carried out by combining geophysical planar anomalies with geological data to delineate the deep extension and spatial distribution characteristics of anomalous bodies;finally,combined with groove information,drilling information,geological information and geophysical information,with the help of Surpac software and Geosoft Oasis mont.AJ geophysical software data processing platform realizes the three-dimensional model construction of ore body,geological body and geophysical anomalies.Through the three-dimensional model comprehensive analysis of the origin and shape of CuI and CuII orebodies,the spatial distribution characteristics of orebodies and surrounding rocks and geophysical anomalies and the deep extension of orebodies and anomalies are visually displayed.