斑岩铜矿-地球科学与环境学报.PDF

第32 卷 第1 期 地球科学与环境学报 Vol.32 No.1 2010 年3 月 Journal of Earth Sciences and Environment Mar.2010 -- : ——— 毛景文, 张建东,郭春丽 ( , 100037) :, , 、。, ;、, , , ;, , ———。 3 (), :、 。 , , : 。 , , 。 :;;;; :P612　:A　:1672-6561(2010)01-0001-14 Porphyry Cu,Epithermal Ag-Pb-Zn, Distal Hydrothermal Au Deposits:a New Model of Mineral Deposit ———Taking the Dexing Area as an Example MAO Jing-w en, ZHANG Jian-dong, G UO Chun-li (K ey Laboratory of Metallogeny and Mineral Assessment of Ministry of Land and Resources, Instituteof Mineral Resources, ChineseA cademy of Geological Sciences, Beij ing 100037, China) Abstra t:Based on the previous studies and detailed field investigations in the Dexing porphyry Cu deposit, the Yinshan Ag-Pb-Zn deposit and the Jinshan shear zone-hosted Au deposit in the Dele Jurassic volcanic basin in the northeastern Jiangxi Province, East China are proposed to be same metallogenic system in this paper.The Dexing is a typical porphyry Cu-Au-Mo deposit in which both ore-forming fluid and elements are derived f rom the granite porphyry.The Yinshan consists of porphyry Cu ore at the copular of quartz porphyry in the low er part and the vein type Ag-Pb-Zn ore in the upper part.The hydrothermal fluid was mainly derived f rom the magma in the early stage and w as incorporated w ith more meteoric water in the late stage.Its ore-forming elements are mainly from the magma.The both Jinshan and the Hamashi, a quartz vein type gold deposit hosted by brit tle fractures, are distal hydrothermal deposits, which were formed by mixed fluids of magmatic and meteoric water w hereas the Au is mainly leached f rom the country rocks of