Welcome to Metal Mine! Today is Share:
×

扫码分享

Metal Mine ›› 2021, Vol. 50 ›› Issue (11): 129-141.

Previous Articles     Next Articles

Ore Prospecting Prediction of Cu-polymetallic Deposit in Kaerqueka Area,Qimantage Area of Qinghai Province

WANG Panxi1,2    ZHANG Peng3    WANG Zhenning1,2    GUO Feng1,2    FENG Naiqi1,2    WANG Hongjie1,2   

  1. 1. Zhengzhou Institute of Multipurpose Utilization of Mineral Resources,CAGS,Zhengzhou 450006,China; 2. Key Laboratory for Polymetallic Ores' Evaluation and Utilization,Minitry of Natural Resources,Zhengzhou 450006,China;3. The Third Geological Exploration Institute of Qinghai Province,Xining 810008,China
  • Online:2021-11-15 Published:2021-12-16

Abstract: Kaerqueka is located in the Qimantag area of western section of East Kunlun orogenic belt,and the westernmost of Indosinian gold,lead and zinc (copper,rare earth) tertiary metallogenic belt in Berkarik-Xiangride.The regional mineral resources are zonal distribution of NW—SE.Previous studies in this area focus on mineralogy,depositology and lithogeochemistry ,but lack of ore prospecting prediction research.Through the systematic summary of the geological,mineral resource,geophysical,geochemical and remote sensing characteristics in this area,the Cu-polymetallic ore prospecting prediction model is established,and the ore prospecting prediction is carried out.The study shows that:①The typical deposits in Kaerqueka area are Cu-polymetallic deposits,and the main metallogenic epoch is Indosinian.The ore-bearing layer is the Qimantag Group of Ordovician,the ore-bearing lithology is skarn and marble,and the contact zone is the most important ore-controlling structure,followed by faults.The intermediate-acid intrusive rocks in Indosinian are most closely related to regional mineralization.The ore minerals are chalcopyrite,sphalerite,galena,molybdenite,etc.②The sulfide oxidation zone is an important indicator for surface prospecting.Skarn polymetallic deposit can cause strong magnetic anomaly of positive and negative associated,high intensity,regular shape and good continuity.The local gravity anomaly is 0.2~1.0 mGal,the first-order anomaly superimposes the higher secondary anomaly when the density of the surrounding rock is high,it shows a large amplitude of spike-like anomaly while the surrounding rock is low density rock mass.The IP anomaly is often characterized by low resistance and high polarization.③Based on the known ore(mineralization) points,mineralization clues and important geophysical, geochemical anomalies and remote sensing anomalies,combined with ore-bearing formations,ore-bearing rocks and important ore-controlling structures,six prospecting prospects for polymetallic deposits are delineated,which can provide reference for conducting further exploration in the region.

Key words: Cu-polymetallic deposit, Qimantag, Kaerqueka, anomaly characteristics, ore prospecting prediction