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EJIMA Terumi

Academic OrganizationAcademic Assembly School of Science and Technology Institute of ScienceTEL
Education and Research OrganizationFaculty of Science Department of ScienceFAX
PositionAssistant ProfessorMail Address
Address3-1-1, Asahi, Matsumoto City 390-8621Web site

Profile

Research Field
Mineralogy
petrology
crystallography
Geochemistry
Science of mantle
Academic Background
Degree
Doctor of Science

Research

Books, Articles, etc.
Articles
Distribution of Cr3+ between octahedral and tetrahedral sites in synthetic blue and green (CaMgSi2O6)95(CaCrAlSiO6)5-diopsides.
Mineralogical Magazine,:1-44 2019(Jan.)
Author:Masahide Akasaka, Yohei Takasu, Makoto Hamada, Mariko Nagashima, Maki Hamada, Terumi Ejima


Oxidation states of Fe in constituent minerals of a spinel lherzolite xenolith from the Tariat depression, Mongolia: The Significance of Fe3+ in Olivine.
Minerals 2018(May 09)
Author:Terumi Ejima, Yasuhito Osanai, Masahide Akasaka, Tatsuro Adachi, Nobuhiko Nakano, Yoshiaki Kon, Hiroaki Ohfuji and Jargalan Sereenen


Zircon U-Pb dating of gabbro and diorite from the Bato pluton, northeast Japan
Island Arc 2017(Oct. 26)
Author:Terumi Ejima, Yoshiaki Kon, Shigenori Kawano and Daisuke Araoka


Precipitates within olivine phenocrysts in oxidized andesitic scoria from Kasayama volcano, Hagi, Japan
Island Arc,Vol.27 2017
Author:Terumi Ejima, Mari Yoneda, M.asahide Akasaka, Hiroaki Ohfuji, Yoshiaki Kon, Mariko Nagashima, and Yoshihiro Nakamuta


Occurrence of Fe3+ and formation process of precipitates within oxidized olivine phenocrysts in basalt lava from Kuroshima volcano, Goto islands, Nagasaki, Japan.
Mineralogical Magazine 2015(Dec. 01)
Author:Terumi Ejima, Masahide Akasaka, Takashi Nagao and Hiroaki Ohfuji


U-Pb age distribution of plutonic rocks in the central Abukuma Plateau, northeastern Japan Arc.
Journal of Mineralogical and Petrological Sciences 2015
Author:Yoshiaki Kon, Terumi Ejima, Sayaka Morita and Tetsuichi Takagi


Oxidation states of Fe and precipitates within olivine from orthopyroxene-olivine-clinopyroxene andesite lava from Kasayama volcano, Hagi, Yamaguchi, Japan.
Journal of Mineralogical and Petrological Sciences 2013(Feb.)
Author:Terumi Ejima, Masahide Akasaka, Takashi Nagao and Hiroaki Ohfuji


Oxidation state of Fe in olivine in andesitic scoria from Kasayama volcano, Hagi, Yamaguchi Prefecture, Japan.
Journal of Mineralogical and Petrological Sciences 2012
Author:Terumi Ejima, Masahide Akasaka, Takashi Nagao and Hiroaki Ohfuji


Oxidation state of Fe in olivine in a lherzolite xenolith from Oku district, Oki-Dogo Island, Shimane Prefecture, Japan.
Journal of Mineralogical and Petrological Sciences 2011(Dec.)
Author:Terumi Ejima, Masahide Akasaka and Hiroaki Ohfuji


Presentations
Geochemical imaging of heavy-REE-rich apatite in the Pacific deep-sea mud using LA-ICPMS
International Symposium on Low-temperature Mineralixation 2019(Oct.)
Author:Yoshiaki KON, Terumi EJIMA , Mihoko HOSHINO AND Kenzou SANEMATSU


Oxidation States of Fe and Inclusions in Olivine from Esquel Pallasite
Goldschmidt 2019 2019(Aug.)
Author:Terumi Ejima, Azumi Yoneyama, Yoshiaki Kon, Masahide Akasaka, Kouki Yoshida and Takafumi Hirata


Distribution of rare earth elements within apatite in fish debris from the Heavy REE-rich deep-sea mud of the Minami-Tori-shima Area, Southeastern Japan.
International Mineralogical Association 2018(Aug.)
Author:Terumi Ejima, Yoshiaki Kon, Mihoko Hoshino et al.


Oxidation states of Fe in constituent minerals of a spinel lherzolite xenolith from the Tariat Depression, Mongolia.
2018(Aug.)
Author:Terumi Ejima, Yasuhito Osanai, Masahide Akasaka et al.


Geochemical characteristics of apatite in Heavy-REE-rich deep-sea mud from Minami-Torishima area, southeastern Japan.
Goldschmidt 2016(Jun.)
Author:Yoshiaki Kon, Mihoko Hoshino, Kemzo Sanematsu, Sayaka Morita, Miko Tsunematsu, Terumi Ejima, Nobuyuki Okamoto, Nobuyuki Yano, Mikiya Tanaka and Tetsuichi Takagi


Geochemical Characteristics of Granitic Rocks Underlying Ion-Adsorption Type REE Deposits.
Goldschmidt 2016(Jun.)
Author:Kenzo Sanematsu, Terumi Ejima, Yoshiaki Kon and Yasushi Watanabe


Distribution and Concentration Process of Rare Earth Elements in Apatite of the Heavy REE-Rich Deep-Sea Mud from the Minami-Torishima Area, Japan.
Goldschmidt 2016(Jun.)
Author:Terumi Ejima, Yoshiaki Kon, Mihoko Hoshino, Kenzo Sanematsu, Daisuke Araoka


Rapid and precise determination of major and trace elements in CCRMP and USGS geochemical reference samples using femtosecond laser ablation ICP-MS.
Symposium on Strategic and Critical Materials 2015(Nov.)
Author:Yoshiaki Kon, Daisuke Araoka, Terumi Ejima, Takafumi Hirata and Tetsuichi Takagi


Evidence of subsolidus oxidation for olivine phenocryst in apparently unaltered basalt lava.
Goldschmidt 2015(Aug.)
Author:Terumi Ejima, Masahide Akasaka, Takashi Nagao and Hiroaki Ohfuji


Crystal Chemistry of Vanadium-Rich Garnet from the Sor Rondane Mountains, East Antarctica.
Goldschmidt 2015(Aug.)
Author:Masahide Akasaka, Mio Hirata, Yasuhito Osanai, Maki Hamada, Mariko Nagashima, Kuniaki Makino and Terumi Ejima


Determination of major and trace elements in GSJ geochemical reference samples using galvanometric LA-ICPMS.
Goldschmidt 2015(Aug.)
Author:Yoshiaki Kon, Daisuke Araoka, Terumi Ejima, Takaomi Yokoyama and Takafumi Hirata


Ferric iron within olivine in a lherzolite xenolith from Oku district, Oki-Dogo Island, Shimane Prefecture, Japan.
21th General Meeting of the International Mineralogical Association 2014(Sep.)
Author:Terumi Ejima, Masahide Akasaka and Hiroaki Ohfuji


Preparation of apatite standard for multi-isotope measurements by SHRIMP and application to rare-earth-rich apatite for constraint on the genesis of rare earth deposits.
7th International SHRIMP workshop 2014(Sep.)
Author:Daisuke Araoka, Yoshiaki Kon, Terumi Ejima and Tetuichi Takagi


Spatial U-Pb age distribution of plutonic rocks in the central Abukuma plateau.
7th International SHRIMP workshop 2014(Sep.)
Author:Yoshiaki Kon, Terumi Ejima, Gen Shimoda, Daisuke Araoka and Tetsuichi Takagi


Effect of high temperature oxidation on ferric iron and precipitates in olivine from andesitic scoria of Kasayama volcano, Japan.
European Mineralogical Conference 2012(Sep.)
Author:Terumi Ejima, Masahide Akasaka, Takashi Nagao and Hiroaki Ohfuji


Oxidation state of Fe and precipitates in olivine from scoria and lava of Kasayama volcano, Yamaguchi, Japan.
International Mineralogical Association 2010(Aug.)
Author:Terumi Ejima, Masahide Akasaka and Takashi Nagao


X-ray and neutron Rietveld study of synthetic Ca2Al3-pMn3+pSi3O12(OD)-piemontite.
20th General Meeting of the International Mineralogical Association 2010(Aug.)
Author:Masahide Akasaka, Mariko Nagashima, Maki Hamada, Asami Sano and Terumi Ejima


Olivine from highly oxidized scoria and lava of Kasayama volcano, Hagi, Japan.
International Union of Crsytallography 2008(Aug.)
Author:Terumi Ejima, Masahide Akasaka and Takashi Nagao