作者单位:YANG Kuan-cai,TIAN Min,ZENG Shi-you(Fourth Geological Prospecting Team of Henan Geological and Mineral Bureau,Zhengzhou Henan 450001,China)杨宽才,田敏,曾石友(河南省地质矿产勘查开发局第四地质探矿队,河南郑州450001)CAI Ji-hua(School of Engineering,China University of Geosciences,Wuhan Hubei 430074,China)蔡记华(中国地质大学工程学院,湖北武汉430074)