P-V-T relations of γ-Ca3(PO4)2 tuite determined by in situ X-ray diffraction in a large-volume high-pressure apparatus

Shuangmeng Zhai, Daisuke Yamazaki, Weihong Xue, Lijin Ye, Chaowen Xu, Shuangming Shan, Eiji Ito, Akira Yoneda, Takashi Yoshino, Xinzhuan Guo, Akira Shimojuku, Noriyoshi Tsujino, Ken Ichi Funakoshi

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Tuite, γ-Ca3(PO4)2, is regarded as an important phosphate mineral in the deep mantle playing a crucial role as a host for rare earth elements, large ion lithophile elements, and phosphorus. In this study we report the thermoelastic properties of synthetic γ-Ca 3(PO4)2 at simultaneously high pressures and temperatures of up to 35.4 GPa and 1300 K, respectively, as determined by means of in situ energy-dispersive X-ray diffraction in a large-volume multi-anvil apparatus. The pressure-volume-temperature data obtained for γ-Ca 3(PO4)2 were fitted by the high-temperature Birch-Murnaghan equation of state to yield V0 = 447.4(4) Å3, KT0 = 100.8(18) GPa, K′T0 = 5.74(13), (∂KT/∂T)P = -0.020(1) GPa/K, and αT = 3.26(18) × 10-5 + 1.76(24) × 10-8 T. In addition, fitting the present data to the Mie-Grüneisen-Debye equation of state gives γ0 = 1.35(6), θ0 = 944(136) K, and q = 0.37(29). Based on the thermoelastic properties obtained in our study, the density profiles of γ-Ca 3(PO4)2 tuite along typical cold and hot slab geotherms were calculated and are compared with those of the coexisting silicate minerals in subducting mid-ocean ridge basalt.

Original languageEnglish
Pages (from-to)1811-1816
Number of pages6
JournalAmerican Mineralogist
Volume98
Issue number10
DOIs
Publication statusPublished - Oct 2012

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equation of state
equations of state
X-ray diffraction
minerals
Equations of state
X ray diffraction
mid-ocean ridges
silicate mineral
Phosphate minerals
anvils
mid-ocean ridge basalt
diffraction
basalt
Silicate minerals
phosphorus
silicates
slab
phosphates
Earth mantle
slabs

Keywords

  • γ-Ca(PO) tuite
  • In situ X-ray diffraction
  • Thermal equation of state
  • Thermoelastic properties

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics

Cite this

P-V-T relations of γ-Ca3(PO4)2 tuite determined by in situ X-ray diffraction in a large-volume high-pressure apparatus. / Zhai, Shuangmeng; Yamazaki, Daisuke; Xue, Weihong; Ye, Lijin; Xu, Chaowen; Shan, Shuangming; Ito, Eiji; Yoneda, Akira; Yoshino, Takashi; Guo, Xinzhuan; Shimojuku, Akira; Tsujino, Noriyoshi; Funakoshi, Ken Ichi.

In: American Mineralogist, Vol. 98, No. 10, 10.2012, p. 1811-1816.

Research output: Contribution to journalArticle

Zhai, Shuangmeng ; Yamazaki, Daisuke ; Xue, Weihong ; Ye, Lijin ; Xu, Chaowen ; Shan, Shuangming ; Ito, Eiji ; Yoneda, Akira ; Yoshino, Takashi ; Guo, Xinzhuan ; Shimojuku, Akira ; Tsujino, Noriyoshi ; Funakoshi, Ken Ichi. / P-V-T relations of γ-Ca3(PO4)2 tuite determined by in situ X-ray diffraction in a large-volume high-pressure apparatus. In: American Mineralogist. 2012 ; Vol. 98, No. 10. pp. 1811-1816.
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abstract = "Tuite, γ-Ca3(PO4)2, is regarded as an important phosphate mineral in the deep mantle playing a crucial role as a host for rare earth elements, large ion lithophile elements, and phosphorus. In this study we report the thermoelastic properties of synthetic γ-Ca 3(PO4)2 at simultaneously high pressures and temperatures of up to 35.4 GPa and 1300 K, respectively, as determined by means of in situ energy-dispersive X-ray diffraction in a large-volume multi-anvil apparatus. The pressure-volume-temperature data obtained for γ-Ca 3(PO4)2 were fitted by the high-temperature Birch-Murnaghan equation of state to yield V0 = 447.4(4) {\AA}3, KT0 = 100.8(18) GPa, K′T0 = 5.74(13), (∂KT/∂T)P = -0.020(1) GPa/K, and αT = 3.26(18) × 10-5 + 1.76(24) × 10-8 T. In addition, fitting the present data to the Mie-Gr{\"u}neisen-Debye equation of state gives γ0 = 1.35(6), θ0 = 944(136) K, and q = 0.37(29). Based on the thermoelastic properties obtained in our study, the density profiles of γ-Ca 3(PO4)2 tuite along typical cold and hot slab geotherms were calculated and are compared with those of the coexisting silicate minerals in subducting mid-ocean ridge basalt.",
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AU - Zhai, Shuangmeng

AU - Yamazaki, Daisuke

AU - Xue, Weihong

AU - Ye, Lijin

AU - Xu, Chaowen

AU - Shan, Shuangming

AU - Ito, Eiji

AU - Yoneda, Akira

AU - Yoshino, Takashi

AU - Guo, Xinzhuan

AU - Shimojuku, Akira

AU - Tsujino, Noriyoshi

AU - Funakoshi, Ken Ichi

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N2 - Tuite, γ-Ca3(PO4)2, is regarded as an important phosphate mineral in the deep mantle playing a crucial role as a host for rare earth elements, large ion lithophile elements, and phosphorus. In this study we report the thermoelastic properties of synthetic γ-Ca 3(PO4)2 at simultaneously high pressures and temperatures of up to 35.4 GPa and 1300 K, respectively, as determined by means of in situ energy-dispersive X-ray diffraction in a large-volume multi-anvil apparatus. The pressure-volume-temperature data obtained for γ-Ca 3(PO4)2 were fitted by the high-temperature Birch-Murnaghan equation of state to yield V0 = 447.4(4) Å3, KT0 = 100.8(18) GPa, K′T0 = 5.74(13), (∂KT/∂T)P = -0.020(1) GPa/K, and αT = 3.26(18) × 10-5 + 1.76(24) × 10-8 T. In addition, fitting the present data to the Mie-Grüneisen-Debye equation of state gives γ0 = 1.35(6), θ0 = 944(136) K, and q = 0.37(29). Based on the thermoelastic properties obtained in our study, the density profiles of γ-Ca 3(PO4)2 tuite along typical cold and hot slab geotherms were calculated and are compared with those of the coexisting silicate minerals in subducting mid-ocean ridge basalt.

AB - Tuite, γ-Ca3(PO4)2, is regarded as an important phosphate mineral in the deep mantle playing a crucial role as a host for rare earth elements, large ion lithophile elements, and phosphorus. In this study we report the thermoelastic properties of synthetic γ-Ca 3(PO4)2 at simultaneously high pressures and temperatures of up to 35.4 GPa and 1300 K, respectively, as determined by means of in situ energy-dispersive X-ray diffraction in a large-volume multi-anvil apparatus. The pressure-volume-temperature data obtained for γ-Ca 3(PO4)2 were fitted by the high-temperature Birch-Murnaghan equation of state to yield V0 = 447.4(4) Å3, KT0 = 100.8(18) GPa, K′T0 = 5.74(13), (∂KT/∂T)P = -0.020(1) GPa/K, and αT = 3.26(18) × 10-5 + 1.76(24) × 10-8 T. In addition, fitting the present data to the Mie-Grüneisen-Debye equation of state gives γ0 = 1.35(6), θ0 = 944(136) K, and q = 0.37(29). Based on the thermoelastic properties obtained in our study, the density profiles of γ-Ca 3(PO4)2 tuite along typical cold and hot slab geotherms were calculated and are compared with those of the coexisting silicate minerals in subducting mid-ocean ridge basalt.

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