REY-Rich Mud: A Deep-Sea Mineral Resource for Rare Earths and Yttrium

Kentaro Nakamura, Koichiro Fujinaga, Kazutaka Yasukawa, Yutaro Takaya, Junichiro Ohta, Shiki Machida, Satoru Haraguchi, Yasuhiro Kato

研究成果: Chapter

9 引用 (Scopus)

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This chapter focuses on newly discovered extensive deposits of deep-sea mud containing high concentrations of rare-earth elements and yttrium (REY). The deep-sea REY-rich muds are found in pelagic region of the Pacific Ocean and very recently also in the Indian Ocean. REY-rich muds are characterized by the following five advantages: (1) tremendous resource potential by virtue of their wide distribution, (2) high REY concentrations with significant heavy REE enrichment, (3) a stratiform distribution that allows relatively simple and cost-effective exploration, (4) very low concentrations of radioactive elements such as Th and U, and (5) ease of extraction of REY by acid leaching. These features demonstrate that the REY-rich mud could constitute a highly promising REY resource for the future. A system to mine REY-rich muds is also presented. This system can be developed based on a system developed and tested for sulfide-rich muds in the Red Sea and manganese nodules in the Pacific Ocean, although pressurized air-lift system will be needed to lift REY-rich muds from very deep water.

元の言語English
ホスト出版物のタイトルHandbook on the Physics and Chemistry of Rare Earths
出版者Elsevier B.V.
ページ79-127
ページ数49
DOI
出版物ステータスPublished - 2015 1 1
外部発表Yes

出版物シリーズ

名前Handbook on the Physics and Chemistry of Rare Earths
46
ISSN(印刷物)0168-1273

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Geochemistry and Petrology
  • Physics and Astronomy(all)

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    Nakamura, K., Fujinaga, K., Yasukawa, K., Takaya, Y., Ohta, J., Machida, S., Haraguchi, S., & Kato, Y. (2015). REY-Rich Mud: A Deep-Sea Mineral Resource for Rare Earths and Yttrium. : Handbook on the Physics and Chemistry of Rare Earths (pp. 79-127). (Handbook on the Physics and Chemistry of Rare Earths; 巻数 46). Elsevier B.V.. https://doi.org/10.1016/B978-0-444-63260-9.00268-6