Nb-REEに富む炭酸塩岩のマグマ的-熱水的進化：モンゴル・ルギーンゴル複合体の事例研究

Bold Munkhdelger; Tsujimori Tatsuki; Aoki Shogo; Dandar Otgonbayar; Bayarbold Manzshir; Umemiya Honoka

doi:10.14862/geochemproc.72.0_237

Abstracts of Annual Meeting of the Geochemical Society of Japan

DOI https://doi.org/10.14862/geochemproc.72.0_237

Conference information

Host: Abstracts of Annual Meeting of the Geochemical Society of Japan

Name : Abstracts of Annual Meeting of the Geochemical Society of Japan

Number : 72

Date : September 07, 2025 - September 19, 2025

Magmatic-hydrothermal evolution of Nb-REE-rich carbonatite: A case study from the Lugiin Gol complex in Mongolia

*Bold Munkhdelger, Tsujimori Tatsuki, Aoki Shogo, Dandar Otgonbayar, Bayarbold Manzshir, Umemiya Honoka

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Keywords: in situ U-Pb geochronology, Mineral chemistry, trace elements of apatite and calcite, critical metals

CONFERENCE PROCEEDINGS FREE ACCESS

Pages 237-

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Abstract

Mongolia hosts significant REE resources, yet carbonatite-hosted Nb potential remains underrecognized. At Lugiin Gol complex, pyrochlore-bearing carbonatites record Nb enrichment during magmatic stages, whereas REE mineralization is mainly hydrothermal. This first documented Nb occurrence in southern Mongolia underscores the critical metal potential of Mesozoic rift-related carbonatitic systems.

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