Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 1992, Vol. 3 ›› Issue (2): 126

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THE RELATIONSHIP BETWEEN CONTENT, VALENCE STATE OF Fe AND COLOUR IN XIUYAN JADE

Qiu Zhaoming(邱兆明)1, Rang Mei (穰玫)1, Huang Junjie (黄俊杰)2   

  1. 1 Changchun University of Earth Sciences, Changehun 130061, China;
    2 Antarctic Research Center, CAGS, Nanjng 210016, China
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Qiu Zhaoming(邱兆明), Rang Mei (穰玫), Huang Junjie (黄俊杰). THE RELATIONSHIP BETWEEN CONTENT, VALENCE STATE OF Fe AND COLOUR IN XIUYAN JADE.Nuclear Science and Techniques, 1992, 3(2): 126

Abstract: Having beautiful colours and fine features, Xiuyan jade is famous in the world. Mineralogically, Xiuyan jade is serpentine jade. XRD, IR and TEM studies indicate that the jade consists mainly of antigorite (m{Mg3(1-1/m)[Si2O5]KOH)ı+su-21m}) with a minor amount of chrysotile. Two favourite samples (PxA, Px1-1), chosen for research on Fe Mossbauer spectra, are only antigorite. Studies indicate that: a. iron ion in antigorite enters the lattice as impurity; b. Fe2+ and Fe3+ substitute for Mg in the coordination octahedron; and c. the colour of jade is related to content of Fe, and Fe2+ /Fe3+≤1 is favourite for colour-forming.

Key words: Xiuyan jade, Antigorite, M?ssbauer spectra