Discussion of migration and precipitation mechanics in Muluo REE deposit Mianning county, west Sichuan province: Evidence from fluid inclusions in bastnaesite

被引：0
|
作者：
Xie YuLing [1 ]
Tian ShiHong [2 ]
Hou ZengQian [3 ]
Chen Wei [3 ]
Yin ShuPing [3 ]
Gao Sheng [1 ]
机构：
[1] Univ Sci & Technol Beijing, Sch Civil & Environm Engn, Beijing 100083, Peoples R China
[2] Chinese Acad Geol Sci, Inst Mineral Resource, Beijing 100037, Peoples R China
[3] Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China
来源：
ACTA PETROLOGICA SINICA | 2008年 / 24卷 / 03期
关键词：
Muluo BEE deposit; CO2 and H-2-rich fluid inclusions; supercritical fluids; REE precipitation;
D O I：
暂无
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
Himalayan Mianning-Dechang REE belt, one of the most important ore-belt in China, is located in west margin of Yangtze craton in East India-Asia collision zone. Muluo REE deposit is one important part of them. It located at the northerm part of this belt. The Muluo BEE deposit situated tectonically located on the northern Jinpingshan Mountains, a Cenozoic intracontinental orogenic belt in southwestern China. Based on petrography, microthermometry, LRM and SEM/EDS analysis of fluid inclusions in bastnaesite, this paper discussed the characteristics, the evolution of ore-forming fluid and BEE precipitation mechanism. It is concluded that BEE is transited in CO2, H-2 and SO4 rich supercritical fluid, decreasing of temperature and pressure, phase-separating is the dominated mechanism for REE precipitation.
引用
收藏
页码：555 / 561
页数：7
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