@article{oai:kanazawa-u.repo.nii.ac.jp:00060774,
 author = {臼井, 洋一 and Iijima, Koichi and Yasukawa, Kazutaka and Fujinaga, Koichiro and Nakamura, Kentaro and Machida, Shiki and Takaya, Yutaro and Ohta, Junichiro and Haraguchi, Satoru and Nishio, Yoshiro and Usui, Yoichi and Nozaki, Tatsuo and Yamazaki, Toshitsugu and Ichiyama, Yuji and Ijiri, Akira and Inagaki, Fumio and Machiyama, Hideaki and Suzuki, Katsuhiko and Kato, Yasuhiro and KR13-02 Cruise Members},
 issue = {6},
 journal = {Geochemical Journal},
 month = {Nov},
 note = {We have discovered deep-sea mud that is extremely enriched in rare-earth elements and yttrium (together called REY) in the Japanese Exclusive Economic Zone around Minamitorishima Island, in the western North Pacific Ocean. The maximum total REY concentration reaches approximately 7000 ppm, which is much higher than that reported for conventional REY deposits on land and other known potential REY resources in the ocean. The extremely REY-rich mud is characterized by abundant phillipsite and biogenic calcium phosphate. In addition, the stratigraphic layer with the highest REY concentration occurs just -3 m beneath the seafloor. The shallow burial of these strata together with the high REY content, especially those of heavy rare-earth elements, suggest that the newly discovered extremely REY-rich mud may be a promising REY resource. © 2016 by The Geochemical Society of Japan., 金沢大学理工研究域地球社会基盤学系},
 pages = {557--573},
 title = {Discovery of extremely REY-rich mud in the western North Pacific Ocean},
 volume = {50},
 year = {2016}
}