Browsing by Author "Kagi H."
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Browsing by Author "Kagi H."
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Takahashi Y.; Shimizu H.; Kagi H.; Yoshida H.; Usui A.; Nomura M. (2000)Relative abundances of rare earth elements (REE) in geological materials are used widely to investigate diverse geochemical issues such as the origins of igneous rocks or the degree of stratification of water columns in ...
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Zedgenizov D.A.; Shatsky V.S.; Sobolev N.V.; Kagi H. (2004)Micro-inclusions (1-10 μm) in 55 diamonds of cubic habit from the Udachnaya kimberlite pipe have been studied using vibrational spectroscopy. This has revealed a multiphase assemblage in cuboid diamonds from the Udachnaya ...
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Takahashi Y.; Shimizu H.; Usui A.; Kagi H.; Nomura M. (2000)X-ray-absorption near-edge structure (XANES) was successfully applied for the direct determination of Ce valence in hydrogenetic ferromanganese nodules (two samples) and crust (one sample). Rare earth element (REE) patterns ...
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Kagi H.; Lu R.; Davidson P.; Goncharov A.F.; Mao H.K.; Hemley R.J. (2000)Near infrared absorption (NIR) spectra of natural morphologically cubic polycrystalline diamonds (cuboid) were obtained at room temperature, and the stretching plus bending combination band of molecular water was observed. ...
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Yamamoto J.; Kaneoka I.; Nakai S.; Kagi H.; Prikhod'ko V.; Arai S. (2004)By applying both vacuum crushing and stepwise heating methods for the extraction of the noble gases, we have discovered ³He/⁴He ratios much lower than the atmospheric ratio (∼0.3 RA; RA is the atmospheric ³He/⁴He ratio of ...
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Suzuki K.; Kagi H.; Nara M.; Takano B.; Nozaki Y. (2000)Experiments have been carried out to clarify the effect of alteration on Re-Os system, near infrared (NIR)-infrared (IR) spectroscopic characteristics and polytype of a natural molybdenite mineral (MoS2). The molybdenite ...
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Yamamoto J.; Kagi H.; Kaneoka I.; Lai Y.; Prikhod'ko V.S.; Arai S. (2002)Micro-Raman spectroscopic analysis allows us to estimate the internal pressure of small fluid inclusions. We applied this method to CO2-dominated fluid inclusions in mantle-derived xenoliths. The pressures estimated from ...
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Komatsu K.; Kuribayashi T.; Kudoh Y.; Kagi H.; Okada T.; Parise J.B. (2005)OH stretching vibration modes for F-rich natural topaz (F-topaz) and for fully hydrated topaz (topaz-OH) synthesized at high pressure, were observed using IR and Raman spectroscopies at pressures up to 30.4 GPa and 17.3 ...
Now showing items 1-8 of 8