香花石中流体包裹体初步研究

PRELIMINARY STUDY ON FLUID INCLUSIONS IN HSIANGHUALITE

初步研究表明:香花石从富Be、Li、Ca、F.贫地Fe、Mn、Mg的高盐度的NaCl-H_2O溶液析出。其包裹体均一温度主要为280～290℃,盐度主要为24～36wt％NaCl,压力为30—60MPa,密度为1.03～1.10g/cm^3,氧逸度为10^(-23)～10^(-35)bar,二氧化碳逸度为10^(2.3)～10^(4.5)bar;包裹体中气相成分H_2O占88％～96％,其次为CO_2占4％～9％,以及CO、CH_4、H_2等。

Preliminary study has been carried out by the authors on the thermobarogeochemical features of fluid inclusios in hsianghualite. It is concluded that the pressure-corrected homogenization temperature, salinit, density, pressure, oxygen fugacity and fugacity of carbon dioxide are 270-290 ℃,34-36wt%NaCl, 1.03-1.15g/cm3,30-60 MPa, 10-23-10-35 bar and 102.3-104.5 bar, respectively. The gas phase components of fluid inclusions in hsianghualite are rich in H2O(88% -96% )and CO2(4% -9% ), with little CO, CH4, H2, N2and so on.