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质中氢键的压力反应可能是理解深层材料弹性特性的重要科学目标。在该研究项目中，我们开发了一种仪器，该工具使我们可以使用钻石砧室对含水材料进行原位高压光谱观测。特别是，我们可以使用相同的设备同时观察到商业上可用的FTIR和拉曼光谱。Furthermore，地幔起源的流体夹杂物（例如，天然钻石中的流体夹杂物）进行了研究。流体夹杂物的近红外光谱表明，流体夹杂物的残余压力显着高。还开发了具有很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.

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。

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.

Generation history of carbonado inferred from photoluminescence spectra, cathodoluminescence image and carbon isotopic composition

从光致发光光谱、阴极发光图像和碳同位素组成推断黑金刚石的生成历史

• 发表时间: 2006
• 期刊: American Mineralogist (印刷中)
• 作者: Kagi H.;Sato S.;Akagi T.;Kanda H.
• 通讯作者: Kanda H.

Pressure dependence of OH stretching mode in F-rich natural topaz and topaz-OH

富氟天然黄玉和黄玉-OH 中 OH 拉伸模式的压力依赖性

• 发表时间: 2005
• 期刊: American Mineralogist 90
• 作者: Komatsu et al.