摘要
通过矿石矿物微量元素,流体包裹体与稳定同位素研究表明蔡家营矿床是成矿物质与成矿流体多来源,而热源与矿区斑岩脉密切相关的中温热液矿床.铅、锌、银等成矿元素来自下元古界红旗营子群角闪岩相变质岩;硫来源于深部硫(火山与次火山热液来源)与地层硫的混合;成矿流体在成矿早阶段以岩浆水为主,到成矿晚阶段,大气降水含量逐渐增多.该矿床主成矿阶段流体包裹体均-温度平均212.5℃,流体盐度平均10.82wt%·NaCl,属于中温中低盐度矿床.成矿温度与盐度从成矿早阶段到晚阶段逐渐降低,且Ⅲ矿带(矿区东北部)成矿温度与流体盐度都高于V矿带(矿区西南部),反映成矿流体可能由矿区东北流向西南.
Through studies of ore mineral trace elements, fluid inclusions and stable isotopes, the Caijiaying Pb-Zn-Ag deposit is considered as mid-temperature hydrothermal deposit whose ore-forming material and hydrothermal solution are polygenetic. Lead, zinc and silver et al. ore-forming materials are supplied from the metamorphic rock (pt1). The source of sulfur in orebodies is estimated from a mix of igneous rock sulfur and sedimentary rock sulfur. The ore-forming fluid is mainly from magmatic hydrothermal water at early ore-forming stage, but meteoric water increases at late ore-forming stage. The ore-forming temperatures and the salinities of fluids drop from the early to the late and from northeastern to south-western of the deposit.
出处
《地质找矿论丛》
CAS
CSCD
1993年第3期52-62,共11页
Contributions to Geology and Mineral Resources Research
