Abstract：X-ray powder diffractometry (XRD), Infrared (IR) spectroscopy, Scanning electron microscope (SEM) and Differential thermal analysis (DTA) were used for studying the transparency in fluence factors of Shuikeng Stone from Shoushan, China. Results of IR spectroscopy and XRD indicated that the main mineral composition of Shuikeng Stone is Dickite. Order degree of Dickite can be indicated by intensity difference of wave number 3 704 and 3 621 cm-1 in IR spectroscopy and intensity difference of diffraction peaks in XRD pattern. Intensity ratio of wave number 3 704 and 3 621 cm-1 in IR spectroscopy (OI) was calculated, the result showed that OI has nothing to do with the transparency of the samples. DHI was calculated by intensity of diffraction peaks of crystallographic plane (111) and (111), the results showed that DHI also has nothing to do with transparency of samples. Results of SEM showed that the crystal particles in transparent samples show a uniform appearance and similar size and the crystallinitydegree of Dickite has nothing to do with its transparency. Results of DTA indicated that the adsorption water in transparent samples is less than that in opaque samples, and the constitution water in transparent samples is closer to the theoretical water content of kaolinite-group mineral than opaque samples. Deficiency of constitution water has caused the decline of structural integrity, accordingly, the charge balance of samples was destroyed. Adsorption water exists in crystal lattice of samples as impurity molecule because of the decrease in charge balance, these impurity molecules would decrease the transparency.
Key words：Shuikeng Stone; Transparency; IR; XRD; Constitution water
邓雨晴，陈 涛. 寿山水坑石的透明度影响因素[J]. 光谱学与光谱分析, 2018, 38(05): 1400-1405.
DENG Yu-qing, CHEN Tao. Influence Factors of Transparency on Shuikeng Stone from Shoushan. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(05): 1400-1405.
[1] TANG De-ping, ZHENG Zong-tan(汤德平, 郑宗坦). Journal of Gems and Gemmology(宝石和宝石学杂志), 1999, 1(4): 28.
[2] DENG Yu-qing, XU Wen-jing, YAO Chun-mao, et al(邓雨晴，徐文静，姚春茂，等). Journal of Gems and Gemmology(宝石和宝石学杂志), 2015, 17(6): 16.
[3] LI Ting, CHEN Tao(李 婷，陈 涛). Acta Petrologica et Mineralogica(岩石矿物学杂志)，2010，29(4)： 414.
[4] ZHAO Shan-rong(赵珊茸). Crystallography and Mineralogy(结晶学及矿物学). Beijing: Higher Education Press(北京: 高等教育出版社), 2004. 371.
[5] CHEN Tao, LIU Yun-gui, WU Di, et al(陈 涛，刘云贵，吴 迪，等). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2016，36(11)： 3693
[6] WANG Guan-yu, CHEN Tao(王冠玉, 陈 涛). Journal of Gems and Gemmology(宝石和宝石学杂志), 2016, 18(1): 15.
[7] Balan E, Lazzeri M, Saitta A M, et al. American Mineralogist，2005, 90(1): 50.
