| 中国吉林长白山地区地幔捕虏体中硫化物熔体包裹体 |
| |
| 引用本文： | 徐九华,谢玉玲.中国吉林长白山地区地幔捕虏体中硫化物熔体包裹体[J].岩石学报,2007,23(1):117-124. |
| |
| 作者姓名： | 徐九华 谢玉玲 |
| |
| 作者单位： | Department of Resource Engineering University of Science and Technology Beijing，Beijing 100083，China，Department of Resource Engineering，University of Science and Technology Beijing，Beijing 100083，China |
| |
| 摘 要： | Mantle xenoliths are common in the Cenozoic basalts of the Changbaishan District,Jilin Province,China.Sulfide assemblages in mantle minerals can be divided into three types:isolated sulfide grains,sulfide-meh inclusions and filling sulfides in fractures.Sulfide-meh inclusions occur as single-phase sulfides,sulfide-silicate melt,and CO_2-sulfide-silicate melt inclusions. Isolated sulfide grains are mainly composed of pyrrhotite,but cubanite was found occasionally.Sulfide-meh inclusions are mainly composed of pontlandite and MSS,with small amounts of chalcopyrite and talnakhite.The calculated distribution coefficient K_(D3)for lherzolite are similar to that of mean experimental value.The bulk sulfides in lherzolite were in equilibrium with the enclosing minerals, indicating immiscible sulfide melts captured in partial melting of upper mantle.Sulfide in fractures has higher Ni/Fe and(Fe Ni)/S than those of sulfide melt inclusions.They might represent later metasomatizing fluids in the mantle.Ni/Fe and(Fe Ni)/S increase from isolated grains,sulfide inclusions to sulfides in fractures.These changes were not only affected by temperature and pressure,hut by geochemistry of Ni,Fe and Cu,and sulfur fugacity as well.
|
| 关 键 词： | 中国 吉林 长白山地区 地幔捕虏体 硫化物 熔体包裹体 |
| 文章编号： | 1000-0569/2007/023（01）-0117-24 |
| 修稿时间： | 2006-07-10 |
Sulfide-melt inclusions in mantle xenoliths from the Changbaishan district, Jilin province, China |
| |
| XU JiuHu,XIE YuLing.Sulfide-melt inclusions in mantle xenoliths from the Changbaishan district, Jilin province, China[J].Acta Petrologica Sinica,2007,23(1):117-124. |
| |
| Authors: | XU JiuHu XIE YuLing |
| |
| Institution: | Department of Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China |
| |
| Abstract: | Mantle xenoliths are common in the Cenozoic basalts of the Changbaishan District,Jilin Province,China.Sulfide assemblages in mantle minerals can be divided into three types:isolated sulfide grains,sulfide-meh inclusions and filling sulfides in fractures.Sulfide-meh inclusions occur as single-phase sulfides,sulfide-silicate melt,and CO_2-sulfide-silicate melt inclusions. Isolated sulfide grains are mainly composed of pyrrhotite,but cubanite was found occasionally.Sulfide-meh inclusions are mainly composed of pontlandite and MSS,with small amounts of chalcopyrite and talnakhite.The calculated distribution coefficient K_(D3)for lherzolite are similar to that of mean experimental value.The bulk sulfides in lherzolite were in equilibrium with the enclosing minerals, indicating immiscible sulfide melts captured in partial melting of upper mantle.Sulfide in fractures has higher Ni/Fe and(Fe Ni)/S than those of sulfide melt inclusions.They might represent later metasomatizing fluids in the mantle.Ni/Fe and(Fe Ni)/S increase from isolated grains,sulfide inclusions to sulfides in fractures.These changes were not only affected by temperature and pressure,hut by geochemistry of Ni,Fe and Cu,and sulfur fugacity as well. |
| |
| Keywords: | Mantle xenoliths Sulfide-melt inclusions Changbaishan |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《岩石学报》浏览原始摘要信息 |
| 点击此处可从《岩石学报》下载免费的PDF全文 |
|
