摘要
黄岗梁矿床是我国北方唯一的一处锡铁共生大型矽卡岩型矿床 ,苏木沟是黄岗梁矿床 NE向延伸的铜铅锌矿点。黄岗梁矿床围岩、蚀变围岩、赋矿矽卡岩以及不同矿体石榴子石稀土元素的总特征体现了岩浆和岩浆水、围岩和大气降水对成矿的综合影响。靠近岩体则较多地体现了岩浆和岩浆热液作用 ;远离岩体则围岩地层和大气降水作用增强 ;从贫矿体 -富矿体 ,从早阶段到晚阶段 ,大气降水对成矿的贡献增大 ,晚期又叠加了岩浆和岩浆热液成矿作用。黄岗梁铁锡矿床的 REE配分曲线类型多样、变化较大 ,充分显示了成矿流体的多来源和多期次叠加成矿的稀土元素特征。苏木沟铜铅锌矿点具有岩浆热液稀土元素特征。
The Huanggangliang deposit is the large Fe-Sn paragenic one in northern China. The REE geochemistry of strata, altered rocks, ore-hosting skarn and garnet from various orebodies indicates that the comprehensive process of magma, magmatic water, wall rocks and-especially meteoric water is responsible for metallization. The contribution of magmatism to metallization tends to increase toward intrusive, but the contribution of strata and meteoric water to metallization tends to increase away from intrusive. The effect of meteoric water on metallization tends to be intensified from barren ore to rich ore. In the late stage, magmatic hydrothermal process was superimposed on metallization. The various REE patterns symbolize the multi-source of fluid and multi-phase metallization. The REE patterns are the magmatic hydrothermal characteristics in Sumugou Cu-Pb-Zn deposit. The result of REE geochemistry primarily establishes the REE pattern model for the type of Huanggangliang skarn deposit.
出处
《岩石学报》
SCIE
EI
CAS
CSCD
北大核心
2002年第4期575-584,共10页
Acta Petrologica Sinica
基金
中科院 KZCX1 - 0 7课题
2 0 0 1 cb4 0 980 6项目联合资助
