Abstract： Occurred in the north Bopu pluton about 3 km south of Huangtian uranium deposit ， the
lithology of the Yanshanian granitoid is biotite monzogranite. In this paper ， the major elements ， trace
elements and rare earth elements of biotite monzogranite were analyzed. The results showed that the
pluton is characterized by high SiO 2 content （ 73.07% to 74.20% ， average 73.71% ）， rich alkaline
（ Na 2 O ＋K 2 O ＝8.20% to 8.78% ， average 8.57% ） and potassium greater than sodium ； and
supersaturated aluminum （ A/CNK value 0.99 to 1.06 ， average 1.03 ） ， which falls into potassium
basalt series. Trace elements is rich in Rb ， Th ， U ， Sm and obviously depleted in Sr ， Ce and Ti. The
REE showed week fraction in HREE and strong fraction in LREE ， and distribution pattern is right-
leaning and the strong Eu depletion （ δEu＝0.18 to 0.26 ） . It is suggested that the monzogranite was
formed in the lithospheric extension and thinning environment ， and the source area was mainly
composed of argillaceous rock. The Th/U ratio is 2.09 which may provide abundant uranium source for
the formation of uranium mineralization in the area.
张善果，阮 昆. 粤东北柏埔地区燕山期小岩体地球化学特征与铀成矿探讨[J]. 世界核地质科学, 2019, 36(02): 73-81.
ZHANG Shanguo,RUAN Kun . Geochemical characteristics and uranium mineralization of Yanshanian
small pluton in Bopu area of northeastern Guangdong. , 2019, 36(02): 73-81.
2019, Vol. 36 
