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Samarium–Neodymium and Rubidium–Strontium Isotopic Dating of Veined REE Mineralization for the Bayan Obo REE‐Nb‐Fe Deposit, Northern China
Author(s) -
Hu FangFang,
Fan HongRui,
Liu Shuang,
Yang KuiFeng,
Chen Fukun
Publication year - 2009
Publication title -
resource geology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.597
H-Index - 43
eISSN - 1751-3928
pISSN - 1344-1698
DOI - 10.1111/j.1751-3928.2009.00107.x
Subject(s) - isochron , isochron dating , geology , strontium , geochemistry , mineralization (soil science) , isotopes of strontium , rubidium , radiometric dating , neodymium , paleozoic , vein , absolute dating , mineralogy , paleontology , chemistry , quaternary , laser , physics , organic chemistry , potassium , soil science , optics , soil water , psychology , psychiatry
The Bayan Obo REE‐Nb‐Fe deposit in Inner Mongolia, China, consists of later REE‐mineralizing fluorocarbonate veins cutting the earlier banded and massive ores in the deposit. Samarium–neodymium dating using the minerals including huanghoite and rubidium–strontium dating using single‐grain biotites both from the later veins show concordant isochrons corresponding to 442 ± 42 Ma (2σ uncertainty) and 459 ± 41 Ma, respectively. The isochron ages suggest that the later REE vein mineralization took place during the middle Paleozoic at Bayan Obo, consistent with geological observations and age data previously reported.