中南大学学报（自然科学版）2016，Vol.47Issue(11)：3792-3799,8.DOI:10.11817/j.issn.1672-7207.2016.11.024
大垅铅锌矿床硫化物Rb-Sr同位素和主微量成分特征及矿床成因
Rb-Sr isotope and main trace element composition characteristics of sulfide and deposit genesis investigation of Dalong Pb-Zn deposit
摘要
Abstract
Dalong Pb−Zn deposit is located in the north head of the Dengfuxian composite rock mass. The lead−zinc orebodies usually occur in the north to south tread silicified fracture zone. The Rb and Sr isotope characteristics of spheterite, the ore deposit geological characteristics and the main and trace elements characteristics of sulfide were analyzed based on electron probe. The results show that there are three kinds of mineralization forms in this area corresponding to the three stages of mineralization, i.e., the quartz-polymetallic-sulfide stage, the quartz-pyrite-sphalerite stage and the quartz-fluorite-sphalerice stage. The initial mass fraction ratio of w(87Sr)/w(86Sr)=0.709 9±0.009 7 is close to that of Batuan rock mass. The Rb−Sr isochron ages is (154±8.0) Ma, which is in line with the diagenetic age ((159.2±4.6) Ma), indicating that there is a close relationship between the mineralization and the yanshanian magmatic activity. The magmatic hydrothermal is the main mineralization. The temperature of mineralization is 161−229℃, which is low−medium temperature. Dalong Pb−Zn deposit belongs to low-middle temperature magmatic hydrothermal type Pb−Zn deposit, which is associated with the Yanshanian magmatic intrusion.关键词
Rb-Sr同位素特征/硫化物/大垅铅锌矿床Key words
Rb-Sr isotopic characteristics/sulfide/Dalong Pb-Zn deposit分类
天文与地球科学引用本文复制引用
郑明泓,邵拥军,刘忠法,张宇,邹艳红,冯雨周..大垅铅锌矿床硫化物Rb-Sr同位素和主微量成分特征及矿床成因[J].中南大学学报（自然科学版）,2016,47(11):3792-3799,8.基金项目
中南大学“创新驱动计划”项目(2015CX008)；中国地质调查局整装勘查项目(12120114052101)；国家自然基金资助项目(41472302)(Project(2015CX008) supported by the Innovation-driven Plan of Central South University （2015CX008）
Project(12120114052101) supported by the Monoblock Exploration from China Geological Survey （12120114052101）
Project(41472302) supported by the National Natural Science Foundation of China) （41472302）
