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Ore Genesis and Deposit Model of Carbonatite‐host REE Deposits: the Mianning‐Dechang REE Belt, Western Sichuan Province, China
Author(s) -
XIE Yuling,
LI Yingxu,
HOU Zengqian,
COOKE David R,
DANYUSHEVSKY Leonid,
DOMINY Simon C
Publication year - 2014
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/1755-6724.12373_29
Subject(s) - beijing , china , carbonatite , chinese academy of sciences , library science , engineering , archaeology , mining engineering , geology , geography , geochemistry , mantle (geology) , computer science
Carbonatite-related deposits host the majority of world’s REE resources. Key examples of carbonatite REE mineralized systems include the Bayan Obo, China, Mountain Pass deposit, USA and Maoniuping, China. The Himalayan Mianning-Dechang (MD) belt in western Sichuan, SW China is one of the most significant REE belts in China. It hosts the giant Maoniuping deposit (3.17Mt REO, 109 Geological Brigade of Sichuan Bureau of Geology and Mineral Resource, 2010), two intermediate, a number of small REE deposits and REE occurrences. Based on geological and geochemical results from key deposits, this paper provides a new understanding on the ore-forming processes and proposes a new deposit model for carbonatite hosted REE deposit.