Understandings of phase transitions of hydrous silicates at mantle conditions

对地幔条件下水合硅酸盐相变的理解

• 批准号: 15340190
• 负责人: KAGI Hiroyuki
• 金额: $ 10.62万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15340190/
• 关键词: hydrogen bonds; interior of the earth; Raman spectroscopy; diamond anvil cell; infrared spectroscopy; in-situ observation; neutron diffraction; 含水鉱物; ダイヤモンドアンビル

Pressure response of hydrogen bonds in hydrous minerals stable at the mantle conditions can be an important scientific target for understandings of elastic properties of deep earth materials. In this research project, we have developed an instrument which enables us in-situ high-pressure spectroscopic observations of hydrous materials using a diamond anvil cell. In particular, we have modified a commercially available FTIR and Raman spectra can be observed simultaneously using the same equipment.Furthermore, fluid inclusions of mantle origins, for example fluid inclusions in natural diamonds, were studied. Near infrared spectra of fluid inclusions demonstrated the residual pressure of fluid inclusions to be significantly high. Spectroscopic measurements with very high spatial resolutions were also developed.

在地幔条件下稳定的含水矿物中氢键的压力响应是了解地球深部物质弹性性质的重要科学指标。在本研究计划中，我们开发了一种仪器，使我们能够使用金刚石对顶砧原位高压光谱观测含水材料。特别地，我们改进了现有的FTIR和拉曼光谱，可以在同一台仪器上同时观测。此外，我们还研究了地幔成因的流体包裹体，例如天然金刚石中的流体包裹体。流体包裹体的近红外光谱表明，流体包裹体的残余压力显着高。还开发了具有非常高空间分辨率的光谱测量。

项目成果

Effect of trace lanthanum ion on dissolution and crystal growth of calcite.

微量镧离子对方解石溶解和晶体生长的影响

• 发表时间: 2004
• 期刊: Journal of Crystal Growth 267
• 作者: Kamiya N.;Kagi H.;Tsunomori F.;Tsuno H.;Notsu K.
• 通讯作者: Notsu K.

Carbonatitic melts in cuboid diamonds from Udachnaya kimberlite pipe (Yakutia): evidence from vibrational spectroscopy

• DOI: 10.1180/0026461046810171
• 发表时间: 2004-02
• 期刊: Mineralogical Magazine
• 影响因子: 2.7
• 作者: D. Zedgenizov;H. Kagi;V. Shatsky;N. Sobolev

Near infrared spectroscopy determines salinity and internal pressure of fluid inclusions in minerals.

近红外光谱测定矿物中流体包裹体的盐度和内部压力。

• 发表时间: 2006
• 期刊: Applied Spectroscopy 60・4(印刷中)
• 作者: Kagi H.;Kiyasu A.;Akagi T.;Nara M.;Sawaki T.
• 通讯作者: Sawaki T.

Tsuno, H., Kagi, H., Takahashi Y., Akagi T., Nomura M.: "Incorporation of divalent ytterbium in synthesized crystals of calcite."Chemistry Letters. 32. 500-501 (2003)

Tsuno, H.、Kagi, H.、Takahashi Y.、Akagi T.、Nomura M.：“方解石合成晶体中二价镱的结合。”化学快报。

Extended Micro-Raman Densimeter for CO2 Applicable to Mantle-originated Fluid Inclusions

• DOI: 10.1246/cl.2006.610
• 发表时间: 2006-05
• 期刊: Chemistry Letters
• 影响因子: 1.6
• 作者: J. Yamamoto;H. Kagi