东华理工大学研究生创新基金YC2017-S277;国家青年科学基金项目41402085;国土资源部大兴安岭成矿带南段地质矿产调查项目1212011120718联合资助. Supported by East China University of Technology Postgraduate Innovation FundYC2017-S277;National Youth Science Foundation Project41402085;the Ministry of Land and Resources, Geological and Mineral Survey Project for Southern Section of Da Hinggan Mountains Metallogenic Belt1212011120718