摘要
1 Geologic background THE volcanic U-deposits are generally associated with felsic to intermediate volcanic rock and their sedimentary derivatives. However, uranium mineralization has been found to be spatially associated with thebasalt of bimodal volcanic associations in Baimianshi uranium ore field. Baimianshi uranium ore-field islocated in Baimianshi volcanic-sedimentary basin of south Jiangxi Province. The cover rocks of the basinconsist of a suite of bimodal volcanic-sedimentary sequences. Its basement rocks are two-mica granites ofBaimianshi rock body. The basalt of cover rocks is interbedded with arkoses in lower sequence, and rhyolite or rhyolitic tuff in upper sequence. Uranium minerals mainly occur as disseminations in the
作者
CHEN Peirong~1, WANG Yinxi~2, NI Qisheng~1, KONG Xinggong~2 and ZHANG Bangtong~2 1. State Key Laboratory of Mineral Deposits, Department of Earth Sciences, Nanjing University, Nanjing 210093, China 2. Center of Modern Analysis, Nanjing University, Nanjing 210093, China
