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Chinese Science Bulletin 2010年第11期55卷 1067-1076页

作者： liu jiqiang chen lihui ni pei State Key Laboratory for Mineral Deposit Research Institute of Geo-Fluid Research School of Earth Sciences and Engineering Nanjing Univer-sity Nanjing 210093 China

Fluid and melt inclusions in mantle xenoliths are thought as direct samples to study mantle liquids. Here we apply Raman mi- crospectroscopy and microthermometry to fluid/melt inclusions in lherzolite xenoliths in Qiaoshan basalts, a Miocene volcano in Linqu, Shandong Province, eastern China. These inclusions include (1) early CO2 fluid inclusions, (2) early carbonate melt inclu-sions, (3) late CO2 fluid inclusions, and (4) late silicate melt inclusions. Among the early CO2 fluid inclusions, most consist of high-density pure CO2, while others have small amounts of other components besides of CO2, including graphite, magnesite, Mg-calcite, CO and N2. The lowest trapping pressures are estimated to be 1.42 GPa and 0.80 GPa for the early and the late fluid inclusions, respectively. Because orthopyroxene is the main host mineral for the early carbonate melt inclusions, we propose that the formation of these carbonate melts is genetically associated with the interactions between CO2 fluids and silicate minerals, e.g. olivine and clinopyroxene. The diversity of minor components in the early CO2 fluid inclusions indicates that mantle peridotites had undergone redox reactions with penetrating fluids/melts. These observations suggest that the compositions of the lithospheric mantle beneath the studied area had been changed by asthenosphere-derived CO2-rich fluids/melts.

关键词：流体包裹体熔融包裹体岩石圈地幔地幔包体相互作用中国东部软流圈山东省

Fluid Inclusion Studies of Ore and Gangue Minerals from the Piaotang Tungsten Deposit, Southern Jiangxi Province, China

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Acta Geologica Sinica(English Edition) 2022年第5期96卷 1647-1658页

作者： WANG Xudong ni pei YUAN Shunda liu jiqiang LI Mingyong liu Hongxin Yuanpei College of Shaoxing University ShaoxingZhejiang 312000China State Key Laboratory for Mineral Deposit Research Institute of Geo-FluidsSchool of Earth Science and EngineeringNanjing UniversityNanjing 210093China MLR Key Laboratory of Metallogeny and Mineral Assessment Institute of Mineral ResourcesChinese Academy of Geological SciencesBeijing 100037China Key Laboratory of Submarine Geosciences Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China

The Piaotang deposit is one of the largest vein-type W-polymetallic deposits in southern Jiangxi Province,South *** coexistence of wolframite and cassiterite is an important feature of the *** on detailed petrographic observations,microthermometry of fluid inclusions in wolframite,cassiterite and intergrown quartz was *** inclusions in wolframite were observed by infrared microscope,while those in cassiterite and quartz were observed in visible *** fluid inclusions in wolframite can be divided into two types:aqueous inclusions with a large vapor-phase proportion and aqueous inclusions with a small vapor-phase *** homogenization temperature(Th)of inclusions in wolframite with large vapor-phase ratios ranged from 280℃ to 390℃,with salinity ranging from 3.1 to 7.2 wt%NaCl *** contrast,the Th values of inclusions with small vapor-phase ratios ranged from 216℃ to 264℃,with salinity values ranging from 3.5 to 9.3 wt%NaCl eq.T_(h) values of primary inclusions in cassiterite ranged from 316℃ to 380℃,with salinity ranging from 5.4 to 9.3 wt%NaCl eq.T_(h) values for primary fluid inclusions in quartz ranged from 162℃ to 309℃,with salinity values ranging from 1.2 to 6.7 wt%NaCl *** results show that the formation conditions of wolframite,cassiterite and intergrown quartz are not *** evolutionary processes of fluids related to these three kinds of minerals are also significantly *** quartz cannot provide the depositional conditions of wolframite and *** fluids related to tungsten mineralization for the NaCl-H_(2)O system had a medium-to-high temperature and low salinity,while the fluids related to tin mineralization for the NaCl-H_(2)O system had a high temperature and medium-to-low *** results of this study suggest that fluid cooling is the main mechanism for the precipitation of tungsten and tin.

关键词： fluid inclusion ore mineral gangue mineral infrared microscopic study quartz-vein-type-tungsten deposit Piaotang

Liquid immiscibility recorded in melt inclusions within corundum from alkaline basalt,Changle area,Shandong province,Eastern China

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岩石学报 2007年第1期23卷 125-130页

作者：刘吉强倪培沈昆丁俊英 State Key Laboratory for Mineral Deposit Research Institute of Geo-FluidsDeportment of Earth Science Nanjing UniversityNanjing 210093China Shandong Institute and Laboratory of Geological Sciences Jinan 250013China State Key Laboratory for Mineral Deposit Research Institute of Geo-FluidsDeportment of Earth ScienceNanjing UniversityNanjing 210093China

Abundant melt-and fluid inclusions occur in corundum megacrysts of alkaline basalt from the Changle area,Shandong province,eastern *** type of melt inclusions,*** melt inclusions(glass+bubbles+daughter minerals)were identified,which occur along growth zones of host corundum *** and laser Raman microprobe analysis were performed on the melt *** bubbles within the melt inclusions are confirmed to be CO_2-rich phase and the daughter minerals are probably silicates,such as augite and *** results of high temperature homogenization experiment strongly suggest that two immiscible melts,i.e.a H_2O-and CO_2-rich melt and an anhydrous and CO_2-poor melt were trapped by melt inclusions in corundum megacryst.

关键词：中国山东昌乐地区碱性玄武岩刚玉岩浆不混溶作用

江苏六合地区上地幔流体P-T条件的限定:流体包裹体证据

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岩石学报 2007年第9期23卷 2069-2078页

作者：刘吉强倪培丁俊英王天刚南京大学内生金属矿床成矿机制研究国家重点实验室

赋存于碱性玄武岩中被岩浆带到地表的地幔橄榄岩捕掳体中发育有大量的包裹体,这些包裹体为地幔流体研究提供了直接信息。本文对江苏六合地区地幔捕掳体中的 CO_2包裹体开展了详细的岩相学、显微测温学及激光拉曼光谱学工作,并对获得的... 详细信息

赋存于碱性玄武岩中被岩浆带到地表的地幔橄榄岩捕掳体中发育有大量的包裹体,这些包裹体为地幔流体研究提供了直接信息。本文对江苏六合地区地幔捕掳体中的 CO_2包裹体开展了详细的岩相学、显微测温学及激光拉曼光谱学工作,并对获得的数据进行计算分析。结果显示地幔橄榄岩矿物中发育有两类流体包裹体:早期原生 CO_2包襄体,晚期次生CO_2包裹体。本次研究通过对这两类包裹体的分析,初步探讨了CO_2包裹体的成因,并对六合地区及中国东部上地幔岩石圈演化提供了进一步的 P-T 限制:早期包裹体捕获于≥0.83GPa(对应28km 深处)压力,晚期包裹体形成于6～18km 深处的再平衡过程。

关键词：流体包裹体 P—T条件地幔流体江苏六合

实验室合成石盐包裹体的均一温度以及古气候意义

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岩石学报 2011年第5期27卷 1543-1547页

作者：孟凡巍倪培葛晨东王天刚王国光刘吉强赵超南京大学内生金属矿床成矿机制研究国家重点实验室南京大学地质流体研究所南京大学地球科学与工程学院南京210093 中国科学院南京地质古生物研究所现代古生物学与地层学国家重点实验室南京210008 南京大学海岸与海岛开发教育部重点实验室南京210093

石盐是表生环境下形成蒸发岩系的主要矿物,在形成过程中捕获大量的原生包裹体。通过低温冷冻测温技术,可以得到石盐中原生包裹体的一系列均一温度,如何正确理解这些数据是应用石盐原生包裹体恢复古气候的关键。石盐沉积可以发生在气水... 详细信息

石盐是表生环境下形成蒸发岩系的主要矿物,在形成过程中捕获大量的原生包裹体。通过低温冷冻测温技术,可以得到石盐中原生包裹体的一系列均一温度,如何正确理解这些数据是应用石盐原生包裹体恢复古气候的关键。石盐沉积可以发生在气水界面以及水体底部,其均一温度记录了卤水结晶的温度。Lowenstein et al.(1998)曾经用水浴法在恒定水温下合成了人工合成石盐,进行原生包裹体的均一温度研究,然而如何用水温来恢复古气温是古环境解释的关键。本次实验通过40℃下(气温,烘箱中蒸发)人工合成石盐,在岩相学观察基础上,对形成于气水界面漏斗晶中的包裹体和在底水沉积人字晶中的包裹体的均一温度进行低温冷冻测温法测定。测温过程中石盐包裹体可以得到一系列均一温度(10.6～39.9℃),而只有最大均一温度才能反映卤水结晶时的温度,两种类型的包裹体也显示了相似的最大均一温度。因此在浅水环境下,两种包裹体都可以用来反映古气温。

关键词：石盐流体包裹体低温冷冻测温法最大均一温度