摘要
在刘山岩矿床矿石和围岩石英所含的流体包裹体中,发现2种新类型流体包裹体,即后期变形阶段的淡化水流体包裹体和成岩早期的NaCl子矿物多相包裹体,并重点研究了流体包裹体面(FIP)中包裹体发育情况。块状铜锌矿石、条带状矿石和糜棱岩化石英角斑岩中FIP特别发育,通常FIP以高角度与石英的拉长方向相交(或垂直于岩石的叶理面)。FIP中大多数流体包裹体具有中温(均一温度120～220℃)、中盐度(3.4%～14.5%)。更重要的是:FIP中普遍含有低盐度(3.4%～6.4%),部分甚至含有更低盐度(0.2%～1.7%)的淡化水流体包裹体,这表明淡化水流体(或大气降水)在造山变形后期曾经参与过FIP古流体的活动。
Two new types of fluid inclusions within quartz were found in ores and gangue minerals from the Liushanyan Cu-Zn mine, i.e. the desalt fluid inclusions formed at the late orogenic deformation stage and the multiphase fluid inclusions with NaCl daughter minerals at the early diagenesis stage. Research show that fluid inclusion planes (FIPs) can often been observed in the massive or banded Cu-Zn ores and the mylonitized quartz keralophyre, and FIPs generally cut the the stretching lineation with a high angle or nearly perpendicular to the foliation planes of rocks. Most fluid inclusions contained in the FIPs are usually characterized by moderate homogenization temperature(120~220 ℃) and mid-low salinity(3.4%~14.5%). The occurrence of desalt fluid inclusions with low salinity (0.2%~1.7%) shows that the meteoric water had taken part in the activity of forming FIPs at the later orogenic defomation.
出处
《华南地质与矿产》
CAS
2004年第4期15-21,共7页
Geology and Mineral Resources of South China
基金
国家自然基金项目(49802009)
国土资源大调查项目(19991020098003).
