The high-pressure structure of kaersutite and its geological importance Article

Zhu, XP, Qin, S, Han, BF et al. (2004). The high-pressure structure of kaersutite and its geological importance . 20(6), 1456-1460.



cited authors

  • Zhu, XP; Qin, S; Han, BF; Liu, J; Li, XD; Wu, X; Wu, ZH

fiu authors

abstract

  • The in-situ high-pressure structure of natural kaersutite, obtained from the mantle xenolith in alkali basalt of southwestern Tianshan in Xinjiang, has been studied using synchrotron radiation energy dispersive X-ray diffraction and diamond anvil cell at the pressures up to 25.4 GPa. At room temperature, the lattice constants a, b, c of kaersutite are compressed continuously with increasing pressure and at the pressure of 18. 9 GPa, a phase transition occurs probably due to the dehydration. Considering the geological occurrence of kaersutite, the experimental results indicate that kaersutite could be stable with rather a depth in the upper mantle, and it must be a rapid process when kaersutite is brought to the earth's surface. In addition, this research would be potentially helpful for the understanding of high-pressure behaviors of other Ti-bearing minerals.

publication date

  • January 1, 2004

start page

  • 1456

end page

  • 1460

volume

  • 20

issue

  • 6