doi:10.16186/j.cnki.1673-9787.2021090083

Received:2021-09-26

Revised:2022-03-23

Online Date: 2022-08-08

Discovery of Apatite in Mantle Xenoliths at Hebi，Henan Province and Mantle Metasomatism(Online)

QIN Zhanying1,2, JIANG Jiang2, REN Xuying3, QI Yong’an2, ZHANG Yanlin2, HOU Guangshun2

1.Henan Province’Non-ferrous^MetaIs Mineral Exploration Engineering Reseach Center，Zhengzhou  450016，Henan， China；2.Institute of Resources & Environment，Henan Polytechnic University，Jiaozuo  454003，Henan ， China；3.Chengdu University of Technology Institute of Sedimentary Geology，Chengdu 6  10059，Sichuan，China

Abstract:Mantle metasomatism is one of the important ways of lithosphere evolution. Dominant metasomatism can provide direct evidence for mantle metasomatism . The main destruction area of the North China Craton is to the east of the Taihang Mountain structural belt，and Hebi area of Henan Province is located on the Taihang Mountain structural belt，and there are a lot of mantle xenoliths. In this paper，a dominant metasomatic apatite single mineral was found in the mantle xenoliths of Tumen kimberlite . By means of stereoscopic observation，scanning electron microscopy and electron probe microanalysis，it is confirmed that there are apatite inclusions in peridotite xenoliths. This kind of apatite is undoubtedly of mantle metasoma- tism，which is the direct evidence of dominant metasomatism of lithospheric mantle in the North China Cra- ton，which may be closely related to the destruction of the North China Craton（thinning of the lithospheric

Key words:Hebi Henan;North China C raton destruction;mantle xenoliths;mantle metasomatism;apatite

CLC:P542.5