Application of Hydrothermal Diamond Anvil Cell to Homogenization Experiments of Silicate Melt Inclusions

作     者：LI Jiankang LI Shenghu 

作者机构：MLR Key Laboratory of Metallogeny and Mineral AssessmentInstitute of Mineral Resources Chinese Academy of Geological Sciences China University of Geosciences 

出 版 物：《Acta Geologica Sinica(English Edition)》 (地质学报（英文版）)

年 卷 期：2014年第88卷第3期

页      面：854-864页

核心收录：

学科分类：0709[理学-地质学] 0819[工学-矿业工程] 081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 0708[理学-地球物理学] 0816[工学-测绘科学与技术] 

基　　金：supported by the Chinese SinoProbe Project (SinoProbe-03-01) the National Natural Science Foundation of China (41372088) the China Geological Survey Program (1212011220805) 

主　　题：silicate melt inclusions homogenization experiments hydrothermal diamond anvil cell,cold-seal pressure vessel Jiajika pegmatite deposit 

摘      要：The homogenization of silicate melt inclusions （SMIs）,small droplets of silicate melt trapped in magmatic minerals,is an important component of petrogenetic and magmatic *** homogenization experiments on SMIs use microscope-mounted heating stages capable of producing high temperatures at 1 atm and cold-seal high-pressure *** stages are generally used for SMIs with low internal pressures and allow in situ observations of the homogenization *** contrast,cold-seal high-pressure vessels are generally used to heat SMIs that have high internal pressures,although the homogenized SMIs can only be observed after quenching in this *** we outline an alternative approach that uses a hydrothermal diamond anvil cell （HDAC） apparatus to homogenize *** is the only current method wherein phase changes in high-internal-pressure SMIs can be observed in situ during homogenization experiments,which represents an advantage over other conventional *** an HDAC apparatus prevents high-internal-pressure SMIs from decrepitating during heating by elevating their external pressure,in addition to allowing in situ observations of *** type-V HDAC that is currently being used has a shorter distance between the sample chamber and the observation window than earlier types,potentially enabling continuous observation of the processes involved in heating and SMI homogenization through an objective lens with a long working *** experiments using HDAC require that a number of steps,including HDAC preparation,sample preparation,sample loading,preheating,and formal heating,be carefully *** experiments on SMIs within granite samples from the Jiajika pegmatite deposit （Sichuan,China） are best performed using an HDAC-based approach,because the elevated proper external pressure of these SMIs,combined with a short heating duration,helps to suppress material leakage and any reactions within the SMIs,in add