title: Magnesium K-edge XANES spectroscopy of geological standards.
abstract: Magnesium K-edge X-ray absorption near-edge structure (XANES) spectra have been investigated to develop a systematic understanding of a suite of Mg-bearing geological materials such as silicate and carbonate minerals, sediments, rocks and chemical reagents. For the model compounds the Mg XANES was found to vary widely between compounds and to provide a fingerprint for the form of Mg involved in geologic materials. The energy positions and resonance features obtained from these spectra can be used to specify the dominant molecular host site of Mg, thus shedding light on Mg partitioning and isotope fractionation in geologic materials and providing a valuable complement to existing knowledge of Mg geochemistry.
authors: Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8564, Japan. yoshimura@aori.u-tokyo.ac.jp
authors: Toshihiro
authors: T
authors: Yoshimura
authors: Yusuke
authors: Y
authors: Tamenori
authors: Nozomu
authors: N
authors: Iwasaki
authors: Hiroshi
authors: H
authors: Hasegawa
authors: Atsushi
authors: A
authors: Suzuki
authors: Hodaka
authors: H
authors: Kawahata
keywords: SPring-8; XANES; geologic material; magnesium