Equations of state of ZrSiO4 phases in the upper mantle

The compressibility of zircon and reidite (ZrSiO4) was investigated by powder X-ray diffraction (XRD) up to 20 GPa using a synchrotron radiation source, Reliable equations of state for zircon and reidite were obtained using a diamond anvil cell (DAC) coupled with yttrium-aluminum-garnet (YAG) laser-...

Full description

Saved in:
Bibliographic Details
Published inThe American mineralogist Vol. 89; no. 1; pp. 185 - 188
Main Authors Ono, Shigeaki, Tange, Yoshinori, Katayama, Ikuo, Kikegawa, Takumi
Format Journal Article
LanguageEnglish
Published Washington Mineralogical Society of America 01.01.2004
Walter de Gruyter GmbH
Subjects
accessory minerals
Aluminum
equations of state
Geophysics
high pressure
mantle
mineral properties
Minerals
nesosilicates
orthosilicates
phase equilibria
pressure
reidite
silicates
Upper mantle
X-ray diffraction
X-ray diffraction data
X-rays
Yttrium
zircon
zircon group
Zirconium
Online AccessGet full text

Cover

More Information
Summary:The compressibility of zircon and reidite (ZrSiO4) was investigated by powder X-ray diffraction (XRD) up to 20 GPa using a synchrotron radiation source, Reliable equations of state for zircon and reidite were obtained using a diamond anvil cell (DAC) coupled with yttrium-aluminum-garnet (YAG) laser-heating. Samples were heated with the laser at each pressure increment to relax deviatoric stress. XRD measurements were carried out at 300 K using an angle-dispersive technique. Data refinements yield third-order Birch-Murnaghan equations of state parameters: the bulk modulus K0 = 205(±8) GPa when the first pressure derivative of the bulk modulus, k0 = 392(±9) when K0? is fixed at 4 for reidite. The volume reduction of the phase transition from zircon to reidite is about 10%. The tentative phase boundary between zircon and reidite is located at about 10 GPa.
ISSN:0003-004X
1945-3027
DOI:10.2138/am-2004-0121