摘要
含矿建造地球化学、矿床包裹体地球化学、Ｃ、Ｈ、Ｏ稳定同位素地球化学及低温水岩淋滤实验的综合研究揭示，铜凤汞矿带控矿下伏地层下寒武统黑色岩系存在较大规模的Ｈｇ亏损，成矿物质主要来自矿带的下寒武统。低温、高盐度、富氯贫硫是茶田汞矿床成矿流体的特征，Ｈｇ可能主要呈ＨｇＣｌ，部份呈ＨｇＳ（ＨＳ－）－的形式活化和迁移，成矿流体主要来自大气降水，低的δ（１８）Ｏ值和低负δ（１８）Ｃ值的结合可有效预测矿化中心部位．提出了茶田汞矿床水热隐蔽爆炸的成矿综合地球化学模式。
Based on the geochemistry studies of ore-bearing formations,fluid inclusions, stable isotopes of carbon, hydrogen and oxygen, and low-temperature rock leaching experimental research, this paper indicates that lower Cambrian black rock series which lay below the ore-controlling strata, keep a larg-scale depletion of Hg in the Tongren-Fenghuang mercury deposet belt, and metallogenic sources mainly derived from lower Cambrian of the metallogenic belt. Low-temperature, high salinity and Cl-rich but S-poor are characteristics of the Chatian mercury deposit.Mercury may be mainly mobiled and immigrated as the HgCl complex, partly as the HgS(HS)-complex. The metallogcnic fluides chiefly originated from meteoric water, and the combination of low δ(18)O with low δ(13)C can direct the metallogenic centre position. Finally, the authors suggest the comprehensive geochemical metallogenic model of the hydrothermal concealed exposion.
出处
《桂林工学院学报》
1995年第4期319-327,共9页
Journal of Guilin University of Technology
基金
国家自然科学基金
国家教委博士点基金
中科院地化所矿床地化开放室基金
关键词
汞矿床
成矿作用
地球化学
成矿流体
热水成矿
Mercury deposit
metallogenesis
hydrothermal concealed explosion
Hunan
