西藏扎西康锑多金属矿床类型、发现过程及意义

扎西康锑多金属矿床是北喜马拉雅成矿带中首次发现的超大型矿床, 是在全世界最年轻、最宏大的"藏南拆离系"中找矿取得的重大突破, 也是我国首次发现喷流沉积-热泉水改造型锰铁锑铅锌银矿床.通过大量详实的野外调查与综合研究, 新发现大量的锰铁碳酸盐建造、纹层状构造、"斑点狗"、同心环带、"古喷流口"、热水蛋、水热角砾岩、热泉洞以及硫化物中Pb+Zn?Cu, Ga?In, Mn、Fe、Ba、B含量高等喷流沉积及热泉作用证据, 属喷流沉积-热泉水改造型锑多金属矿床, 是成矿找矿理论方法创新指导找矿突破的经典范例.在重点介绍该矿床地质特征、成因的基础上, 系统论述其发现过程及勘查新进展, 这对于启迪人们的找矿思路, 推动北喜马拉雅地区喷流沉积-改造型矿床进一步的勘查评价、科学研究及理论方法创新具有重要的指导与借鉴意义. 

Type,Discovery Process and Significance of Zhaxikang Antimony Polymetallic Ore Deposit,Tibet

Zhaxikang antimony polymetallic ore deposit, the first super large deposit discovered in northern Himalayan metallogenic belt (NHMB) and first SEDEX discovered modified by hot spring type Mn-Fe-Sb-Pb-Zn-Ag deposit in China, is the marked prospecting breakthrough in the youngest and great southern Tibetan detachment system (STDS). Many detailed field surveys and comprehensive researches have been made to seek evidence of SEDEX and hot spring mineralization, including the ferromanganese carbonate formation, lamellar structure, dalmatianite structure, concentric rings, paleo-spout, hot water eggs, hydrothermal breccia, hot spring hole, (Pb+Zn) concentration much higher than Cu, Ga concentration much higher than In, as well as the higher concentrations of Mn, Fe, Ba and B. These indicate that Zhaxikang is the SEDEX modified by hot spring type deposit. The innovation of ore-forming prospecting theory method plays an important role in the prospecting breakthrough of Zhaxikang deposit. Based on the analysis of characteristics of ore deposit and its genetic type, the discovery process and exploration advance were introduced, which is of great significance both in the prospecting theories and practices, and in the exploration and evaluation, scientific research, and theory innovation in NHMB.