摘要Ⅰ. INTRODUCTION Volcano-sedimentary system of the Dengfeng Group metamorphosed to the amphibolite facies, central Henan, is considered as an E-W extending greenstone belt on the southern margin of the North China Craton (Sino-Korean Craton).
4Liu Yushan, Zhang Guilan Institute of Mineral Deposits, Chinese Academy of Geological Sciences, Beijing and Tian Jun Changchun College of Geology, Changchun, Jilin.Experimental Study on the Leaching of Gold from Greenstone[J].Acta Geologica Sinica(English Edition),1993,67(2):211-221.