摘要
南秦岭宁陕—镇安地区太平沟一带首次发现与印支晚期侵入体有关的斑岩型铜(金)矿床,蚀变小岩体平面形态呈椭圆状展布,出露面积0.12 km^2。在蚀变岩体内外接触带圈定以铜为主的多金属矿带3条,带内初步圈定铜(金)矿(化)体13条,矿床围岩蚀变具典型中心面型蚀变特征。通过地质勘查工作并结合岩相学、矿相学对矿床地质特征研究认为,太平沟铜(金)矿具斑岩型铜(金)矿成矿特征,其形成与南秦岭中生代印支晚期构造—岩浆热事件关系密切。
A porphyry copper(gold)deposit related to the late Indosinian intrusive body is recently discovered at the Taipinggou area of Ningshan Zhen'an region in the South Qinling mountain range.The plane shape of the small alteration rock body is elliptical and the exposed area is just 0.12 km^2.In the inner and outer contact zones of the altered rock mass,three polymetallic ore belts are delineated,in which 13 copper(gold)orebodies are preliminarily circled out.The wall rock alteration of the deposit is characterized by typicall plane alteration in the center.Based on the geological exploration,petrography and mineralogy,it is considered that Taipinggou copper(gold)deposit has the porphyry copper(gold)mineralization characteristics,and its formation is closely related to the tectonic magmatic thermal event in the late Mesozoic Indosinian in South Qinling orogenic belt.
作者
刘文建
张凯
王居里
陈亚伟
张望
胡洋
张海明
LIU Wenjian;ZHANG Kai;WANG Juli;CHEN Yawei;ZHANG Wang;HU Yang;ZHANG Haiming(Xi’an Insititute of Geological and Mineral Exploration Co.,Ltd.,Xi’an 710100,Shaanxi,China;State Key Laboratory of Continental Dynamics,Department of Geology,Northwest University,Xi'an 710069,Shaanxi,China)
出处
《矿产与地质》
2020年第3期644-646,共3页
Mineral Resources and Geology
基金
陕西地矿集团有限公司地质科研专项“东秦岭(陕西)印支期—燕山期构造体制转换过程中岩浆活动与成矿作用综合研究”项目(KY201806)
陕西省地质勘查基金“陕西省镇安县银洞湾—张子坪一带铅锌多金属矿预查”项目(61201405268)共同资助。
关键词
斑岩型
铜(金)矿
南秦岭造山带
porphyry type
copper(gold)deposit
South Qinling orogenic belt
