X-ray diffraction study of arsenopyrite at high pressure |
| |
Authors: | D W Fan M N Ma W G Zhou S Y Wei Z Q Chen H S Xie |
| |
Institution: | (1) Institute of Geochemistry of Earth’s Deep Interior Materials and Fluid Interaction, Chinese Academy of Science, Guiyang, 550002, China;(2) Graduate School of Chinese Academy of Science, Beijing, 100049, China;(3) Department of GeoScience, Stony Brook University, New York, 11794, USA; |
| |
Abstract: | The high-pressure X-ray diffraction study of a natural arsenopyrite was investigated up to 28.2 GPa using in situ angle-dispersive
X-ray diffraction and a diamond anvil cell at National Synchrotron Light Source, Brookhaven National Laboratory. The 16:3:1
methanol–ethanol–water mixture was used as a pressure-transmitting medium. Pressures were measured using the ruby-fluorescence
method. No phase change has been observed up to 28.2 GPa. The isothermal equation of state (EOS) was determined. The values
of K
0, and K′
0 refined with a third-order Birch–Murnaghan EOS are K
0 = 123(9) GPa, and K′
0 = 5.2(8). Furthermore, we confirm that the linear compressibilities (β) along a, b and c directions of arsenopyrite is elastically isotropic (β
a
= 6.82 × 10−4, β
b
= 6.17 × 10−4 and β
c
= 6.57 × 10−4 GPa−1). |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|