Study on Spectroscopy and Associated Mineral Characteristics of
Turquoise From Shizigou, Xichuan, Henan
DUN Jin-han1, YANG Ming-xing1, 2*, LIU Ling1, JIANG Yan1, YUAN Ye1, 3, WANG Yi1
1. Gemmological Institute, China University of Geosciences (Wuhan), Wuhan 430074, China
2. China University of Geosciences (Wuhan) Jewelry Testing Center, Wuhan 430074, China
3. Hubei Land Resources Vocational College, Wuhan 430090, China
Abstract：Shizigou of Xichuan County, Nanyang City, Henan Province, is located in the eastern extension of the turquoise mining area in the eastern part of the Qinling Mountains, and is one of the important turquoise mining areas in the central mining belt of Hubei, Henan, and Shaanxi. However, compared with turquoise in Hubei and Shaanxi, the research on turquoise in Henan is still insufficient. In this paper, infrared spectroscopy, Raman spectroscopy and LA-ICP-MS were used to analyze the spectroscopic and geochemical characteristics of Shizigou turquoise, focusing on the rare earth elements and trace elements of Shizigou turquoise, and the mineral assemblage and structure of turquoise were studied by X-ray powder crystal diffraction and scanning electron microscopy. The results show that Shizigou turquoise is composed of thin plates, short columnars, and fine flake crystallites. The distribution characteristics of rare earth elements are the relative loss of light rare earths and the relative enrichment of heavy rare earths, and have the geochemical characteristics of high Fe, Cu, Ba, U, V, Zn content, and low Ca content. Typical impurity minerals include quartz, graphite, bonattite, apatite, dickite and hematite, etc., and the surrounding rock mineral assemblage is mainly quartz, accompanied by barite, lepidocrocite, and a small amount of clay minerals such as kaolinite, chlorite and illite, which have important indicative significance for the low-temperature hydrothermal metasomatism and weathering leaching composite metallogenic environment of Shizigou turquoise, which provides a scientific basis for improving the domestic turquoise research and exploring the source of raw materials for early turquoise handicrafts in China.
顿瑾涵，杨明星，刘 玲，姜 炎，袁 冶，汪 毅. 河南淅川狮子沟绿松石光谱学及伴生矿物特征研究[J]. 光谱学与光谱分析, 2025, 45(11): 3027-3034.
DUN Jin-han, YANG Ming-xing, LIU Ling, JIANG Yan, YUAN Ye, WANG Yi. Study on Spectroscopy and Associated Mineral Characteristics of
Turquoise From Shizigou, Xichuan, Henan. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2025, 45(11): 3027-3034.
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