期刊
ACTA GEOLOGICA SINICA-ENGLISH EDITION
卷 83, 期 5, 页码 932-938出版社
WILEY-BLACKWELL
DOI: 10.1111/j.1755-6724.2009.00090.x
关键词
synthetic fluid inclusion; fused silica capillary; CO2 inclusion; CO2 density equation; Raman analysis
资金
- Ministry of Science and Technology of China [J0723]
- China Postdoctoral Science Foundation [20070420418]
- National Natural Science Foundation of China [40673040]
- Energy Program of the USGS
The densities of CO2 inclusions in minerals are commonly used to determine the crystallizing conditions of the host minerals. However, conventional microthermometry is difficult to apply for inclusions of small size (< 5-10 mu m) or low density. Raman analysis is an alternative method for determining CO2 density, provided that the CO2 density-Raman shift relation is known. This study aims to establish this CO2 density-Raman shift relation by using CO2 inclusions synthesized in fused silica capillaries. By using this newly-developed synthetic technique, we formed pure CO2 inclusions, and their densities were determined by microthermometry. The Raman analysis showed that the relation between CO2 density (D in g/cm3) and the separations ( in cm-1) between the two main bands (i.e. Fermi diad bands) in CO2 Raman spectra can be represented by a cubic equation: D (g/cm3)=0.74203(-0.0193+5.903322-610.79472+21050.30165)-3.54278 (r2=0.99920). Our calculated D value for a given is between those obtained from two previously-reported equations, which were derived from different experimental methods. An example was given in this study to demonstrate that the densities of natural CO2 inclusions that could not be derived from microthermometry could be determined by using our method.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据