山西五台山和冀东迁安地区条带状铁矿的岩石化学特征及其地质意义_沈其韩.pdf

30 2 Vol. 30, No. 2: 161~ 171 2011 3 ACT A PETROLOGICA ET MINERALOGICA Mar. , 2011 #专题研究# 1 1 1 1, 2 沈其韩 , 宋会侠 , 杨崇辉, 万渝生 ( 1. , 100037; 2. , 100037) : ( ) 3 , : 4 T ULaCePSm , KNbSrHfErT i ; , , , , Eu , Y Y , Eu , 34 D S , : ; ; ; : P618. 31; P595 :A : 1000-6524(2011) 02-0161- 11 Petrochemical characteristics and geological significations of banded iron formations in the Wutai Mountain of Shanxi and Qian an of eastern Hebei 1 1 1 1,2 SHEN Q-i an , SONG Hu-i xia , YANG C ong- ui and WAN Yu-s eng ( 1. Institute of Geology , C inese Academy of Geological Sciences, Beijing 100037, C ina; 2. Beijing SHRIM P Center, Beijing 100037, C ina) Abstract: Petrological and petroc emical c aracteristics of samples from four Neo-Arc ean banded iron ore de- posits of Baiyuli, Baiz iyan and Ekou in Wutai Mountain area and Qian an in eastern Hebei Province are report- ed in t is paper. Some comparisons are also made wit Ans an iron deposit in Liaoning, Hanw ang iron deposit in S andong and some ot er iron deposits of t e same kind abroad. T e aut ors ave found t at t ese iron de- posits ave ig ly consistent c aracteristicss in t e follow ing four aspects: all of t e samples are depleted in T , U , La, Ce, P and Sm and enric ed in K, Nb, Sr, Hf, Er and T i; as one of t e c aracteristics of Arc ean ma- rine sediments, t ey all ave very low REE content, w it t e average valu