Geochemical Characteristics of Longxi Nephrite in Wenchuan and Origin of Sansandui and Jinsha Jades

SONG Mingwei; PENG Yiwei; LANG Xinghai; CHENG Wenbin; OUYANG Hui; CHEN Xi; ZHAO Fufeng; PENG Lei; CAI Jimin; XU Wenli

doi:10.12401/j.nwg.2024105

2025 Vol. 58, No. 2

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Article navigation > Northwestern Geology > 2025 > 58(2): 240-260

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SONG Mingwei, PENG Yiwei, LANG Xinghai, CHENG Wenbin, OUYANG Hui, CHEN Xi, ZHAO Fufeng, PENG Lei, CAI Jimin, XU Wenli. 2025. Geochemical Characteristics of Longxi Nephrite in Wenchuan and Origin of Sansandui and Jinsha Jades. Northwestern Geology, 58(2): 240-260. doi: 10.12401/j.nwg.2024105

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SONG Mingwei, PENG Yiwei, LANG Xinghai, CHENG Wenbin, OUYANG Hui, CHEN Xi, ZHAO Fufeng, PENG Lei, CAI Jimin, XU Wenli. 2025. Geochemical Characteristics of Longxi Nephrite in Wenchuan and Origin of Sansandui and Jinsha Jades. Northwestern Geology, 58(2): 240-260. doi: 10.12401/j.nwg.2024105

Geochemical Characteristics of Longxi Nephrite in Wenchuan and Origin of Sansandui and Jinsha Jades

1.
College of Earth and Planetary Sciences, Chengdu University of Technology, Chengdu 610059, Sichuan, China
2.
School of Geoscience and Technology Southwest Petroleum University, Chengdu 610500, Sichuan, China

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Corresponding author: PENG Yiwei, pengyiwei15@cdut.edu.cn

Received Date: 08 September 2024

Revised Date: 22 November 2024

Accepted Date: 22 January 2025

Publish Date: 20 April 2025

Abstract

Abstract

Sichuan Longxi nephrite played an important role in ancient Sichuan culture. In order to investigate the geochemical characteristics of Longxi nephrite and its relationship with Sanxingdui and Jinsha jade, the mineral and chemical composition of Longxi nephrite were analyzed by X-ray diffraction, X-ray fluorescence, an electron probe microanalyzer, and inductively coupled plasma mass spectrometry. Longxi nephrite is a tremolite jade similar to marble that contains a minor amount of calcite, dolomite, steatite, apatite, and rutile. It typically has a dark green-yellow green-light green-offwhite color ring. The geochemical properties include high P, Mn, V, Cr, Ni and U content, and low δCe values, and an LREE/HREE ratio close to 1. The REE partition curve is seagull-like, with clear Ce and Eu negative anomaly characteristics. The Longxi nephrite has gemological characteristics similar to the Jinsha and Sanxingdui jades and rare earth element properties that are extremely consistent with the Jinsha jades. Considering the geographical location between the three places, it is speculated that Jinsha and Sanxingdui jades may be sourced from Longxi nephrite.
- Longxi nephrite /
- Sanxingdui Site /
- Jinsha Site /
- geochemical characteristics

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References

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