Origin of Sanxingdui and Jinsha Jades

Abstract:

In this paper， the spectroscopic characteristics of Longxi nephrite were analyzed by using Raman spectroscopy， electron probe， and inductively coupled plasma mass spectrometry （LA-ICP-MS） . In addition， the chemical composition was tested and analyzed， and compared with Sanxingdui jade and Jinsha jade. The results show that both the Raman spectra of Sanxingdui amphibole jade and Longxi nephrite have a characteristic peak of 674cm-1. The majorelement mapping shows that the mineralization of Longxi nephrite jade is related to dolomite， while part of the Sanxingdui amphibolejade is related to dolomite， and the mineralization of some jade artifacts is related to serpentine. The rare earth element characteristics of Longxi nephrite and the Jinsha Site have a high similarity. In combination with factors such as the distance between the three places and the appearance of the jade， it is speculated that Longxi， Sichuan is one of the sources of jade materials for Sanxingdui and Jinsha jade.

Key words:Longxi nephrite;Sanxingdui Site;Jinsha Site;Raman spectroscopy;chemical composition