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U – P b and R e– O s Ages of the H uaheitan Molybdenum Deposit, NW C hina
Author(s) -
Zhu Jiang,
Lü Xinbiao,
Chen Chao,
Cao Xiaofeng,
Wu Chunming
Publication year - 2013
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/rge.12012
Subject(s) - molybdenite , molybdenum , geology , zircon , geochemistry , mineralization (soil science) , quartz , magmatism , mineralogy , sulfide , fluid inclusions , metallurgy , paleontology , materials science , tectonics , soil science , soil water
The H uaheitan molybdenum deposit in the B eishan area of northwest China consists of quartz‐sulfide veins. Orebodies occur in the contact zone of the H uaniushan granite. LA‐ICPMS U – P b zircon dating constrains the crystallization of the granite at 225.6 ± 2.2 Ma (2σ, MSWD = 4.5). Re–Os dating of five molybdenite samples yield model ages ranging from 223.2 ± 3.5 Ma to 228.6 ± 3.4 Ma, with an average of 225.2 ± 2.4 Ma. The U–Pb and Re–Os ages are identical within the error, suggesting that the granite and related Huaheitan molybdenum deposit formed in the L ate T riassic. Our new data, combined with published geochronological results from the other molybdenum deposits in this region, imply that intensive magmatism and M o mineralization occurred during 240 Ma to 220 Ma throughout the B eishan area.