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Mineral‐Zonation of Vein‐Type U‐Deposit and Predetermination of Concealed Ore‐Bodies in the Xiazhuang Ore‐Field, SE China
Author(s) -
PENG Zhuolun,
CHEN Zhen,
LIAO Zhuoheng,
CHEN Guoneng
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 - 10.1111/1755-6724.12385_32
Subject(s) - china , library science , chinese academy of sciences , geography , archaeology , computer science
The so-called ‘granite-type’ uranium deposits usually occur in vein-shape controlled by faults (Jin and Huang, 1991). This type of U-deposit is characterized by their spatial distribution limited in granite bodies and a greater age span than the granite host (Chen and Grapes2007, Li et al. 2011). The vein-type U-deposits in the Xiazhuang orefield that is located at the eastern part of the west-east trending Guidong batholiths in the northern Guangdong Province, SE China, for example, most of the ore-vein are formed in the latest Cretaceous (80-60Ma) and the host granites are form in the early and late Jurassic (185-160Ma and 152-141Ma, respectively) (Lou et al, 2001, Jiang and Chen 2011). This type of U-deposit has been explained as hydrothermal deposit originated from repeated crustal melting that result in increasing ƒO2 of the magma system and it is favorable for U changing into U; Utypically occurs in uranyl, i.e. (UO2), which is unable to enter accessory minerals because of its large radius, thus staying in the gas phase and being expelled out of magma system with hydrothermal fluid in the late magma stage (Chen and PENG Zhuolun, CHEN Zhen, LIAO Zhuoheng and CHEN Guoneng, 2014. Mineral-Zonation of Vein-Type U-Deposit and Predetermination of Concealed Ore-Bodies in the Xiazhuang Ore-Field, SE China. Acta Geologica Sinica (English Edition), 88(supp. 2): 1663-1665.