地质论评2017，Vol.63Issue(2)：413-426,14.DOI:10.16509/j.georeview.2017.02.012
新疆东准噶尔拉伊克勒克岩浆矽卡岩型富铜—铁矿的发现及其成矿特征
Discovery and Metallogenic Characteristics of Layikeleke Magmatic Skarn Type of Rich Copper—Iron Deposit,Eastern Junggar, Xinjiang
摘要
Abstract
Layikeleke iron — copper deposit is a high grade deposit which is recently discovered in coverage area of Qiongheba area in east Junggar,Xinjiang autonomous region.The content of TFe in the ore body is in an average of 51％,Cu over 1％,and associated with gold.The deposit characteristics are shallow,high grade and high economic value.Through the analysis of 1∶ 50000 ground gravity,magnetic and IP data,the large scale integrated geophysical exploration has carried out in this area.A high magnetic,high density and middle— high chargeability body was confirmed under the Quaternary cover.Then a concealed skarn ore body under the Quaternary was discovered by drilling in the geophysical anomaly zone.The ore body which has a thickness of 8 to 32m and length more than 200m is located in the fracture of the lower Devonian volcanic rocks.the wall rock alteration developed,from inner (ore body) to outer-side (wall rock) are Skarn lithification,epidotization and actinolite alteration zoning.The metallic mineral are magnetite and chalcopyrite,and the gangue minerals are mainly hedenbergite,diopside—salite,etc.The characteristics of the occurrence of ore body and the ore mineral composition show that the ore body is Skarn type.But unlike the normal skarn deposits,there are no carbonate rock and pluton around the ore body and no contact metasomatic environment.Base these information,we believed that the deposit was formed in the processing of crystal fractionation and replacement,when the skarn magma from deep intrudes into the tectonic fractures in shallow crust.关键词
岩浆矽卡岩/富铜—铁矿床/结晶分异/交代作用/东准噶尔拉伊克勒克Key words
magmatic skarn/Rich Cu—Fe deposit/crystallization differentiation/metasomaticalteration/Layikeleke, Eastern Junggar引用本文复制引用
严加永,孟贵祥,杨岳清,邓震,赵金花,汤贺军..新疆东准噶尔拉伊克勒克岩浆矽卡岩型富铜—铁矿的发现及其成矿特征[J].地质论评,2017,63(2):413-426,14.基金项目
本文为新疆维吾尔自治区地质勘查基金资助项目(编号:A11-3-XJ4),国家自然科学基金资助项目(编号:41574133)和中国地质调查局地质项目(编号:121201103000150009,1212011085024,12120113041300)的成果.This work is jointly supported by Xinjiang Geological Exploration Fund Project (No.A11-3-XJ4),the National Natural Science Foundation (No.41574133) and China Geological Survey Bureau under the geological survey Project (No.121201103000160901,1212011085024 & 12120113041300). （编号:A11-3-XJ4）
