Welcome to visit Geoscience!

Geoscience ›› 2021, Vol. 35 ›› Issue (05): 1380-1396.DOI: 10.19657/j.geoscience.1000-8527.2021.21

Previous Articles     Next Articles

Ore-forming Material Source of Non-ferrous Metal Deposits in the Central Great Xing’an Range

ZHAO Baoju1,2(), ZHANG Yanfei3, YAN Kai4, XIAO Rongge1()   

  1. 1. School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China
    2. NFC (Shenyang) Metallurgical Machinery Co.Ltd., Shenyang,Liaoning 110027, China
    3. Shenyang Institute of Geology and Mineral Resources, China Geological Survey, Shenyang,Liaoning 110034, China
    4. China National Geological Exploration Center of Building Materials Industry, Beijing 100035, China
  • Received:2020-05-20 Revised:2021-06-30 Online:2021-10-10 Published:2021-11-04
  • Contact: XIAO Rongge

Abstract:

The central Great Xing’an Range is an important non-ferrous metal province in NE China, such as lead, zinc and silver,and discussion on the ore-forming material source is important for metallogenic prediction and prospecting work in this region. Through extensive geological survey,typical deposits sampling,rock and mineral identification,the whole-rock geochemical compositions and element cluster analysis, the results show that the total REE content of the Hercynian magmatic rocks is low, and the negative Eu anomaly is indistinct, and the LREE/HREE ratio is large,which is positively correlated with the total amount of rare earth and negatively correlated with the δEu value, indicating that the diagenetic material is mainly derived from the mantle. Whereas the Yanshanian magmatic rocks show absolutely contrary characteristics,indicating the characteristic of crustal material. The lead-zinc-silver polymetallic deposit is dominated by zinc. The REE distribution pattern of the lead-zinc ores is basically consistent with that of the mantle-derived differentiated magmatic rocks. Cluster analysis shows that TFeO-Cu-Zn is an independent group, indicating that the TFeO-Cu-Zn material is separated from the magma from late magmatic crystallization. The TFeO-Cu-Zn independent group shows that the sphale-rite in the region is all high-temperature iron sphalerite. The results show that the ore-forming materials of lead-zinc-silver deposits in the region are diorite-derived. The later hydrothermal transformation has certain effects on the lead-silver enrichments. In terms of the ore-forming material source, an intermediate-mafic magmatic-related lead-zinc-silver metallogenic system and a felsic magmatic-related copper molybdenum and copper-tin metallogenic system is presented.

Key words: rare earth element, diorite, non-ferrous metal deposit, central Great Xing’an Range, ore-forming material source

CLC Number: