Crystal structure of anhydrous phase X, K1.93(Mg2.02Cr0.02)Si2.00O7

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概要

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• The crystal structure of anhydrous phase X with composition K1.93(Mg2.02Cr0.02)Si2.00O7 was refined by means of X-ray diffraction analysis of a single-crystal synthesized at 16.5 GPa and 1700 °C. The structure is trigonal with space group P31m and the cell parameters are a = 5.0756 (1), c = 6.5969 (2) Å, and V = 147.179 (6) Å3. The structure is closely related to those of the space group P63cm, which have previously been identified to have hydrous and anhydrous phase X's. However, these differ in the arrangements of Si2O7 groups and MgO6 octahedra.

著者

• Matsuzaki Takuya

  Institute For Study Of The Earth's Interior Okayama University

• Katsura Tomoo

  Institute For Study Of The Earth's Interior Okayama University

• Shatskiy Anton

  Institute For Study Of The Earth's Interior Okayama University

• Matsui Masanori

  School Of Science University Of Hyogo

• Hagiya Kenji

  School Of Science University Of Hyogo

• MATSUZAKI Takuya

  Institute for Study of the Earth's Interior, Okayama University

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