• 责任者：Yuan Ye (State Key Laboratory of Geological Processes and Mineral Resources ; School of Gemology ; China University of Geosciences ; Beijing 100083 ; China) ; Shi Guanghai
• 刊名：Journal of Mineralogy and Petrology
• 出版年：2011
• 卷期：31(3)
• 关键词：高岭石 ; kaolinite ; 迪开石 ; dickite
• 页码：p.18-24
• 图表：7 illus., 5 tables, 13 refs.
• 分类号：0700
• 出版序号：1631
• issnNo：ISSN1001-6872
• isbnNo：CN51-1143/TD

///Based on the field and microscope observations, electron probe microanalysis (EPMA) and differential thermal analysis (DTA), representative samples of the Changhua stone were selected for spectra analysis by using X-ray powder diffraction (XRD) and infrared spectrum (IR). The major mineral components of the stone belong to kaolinite group, consisting of dickite and some transitional mineral along kaolinite-dickite joint. The Hinckley index indicates that the structural order of kaolinite group minerals varies significantly and the IR spectrum shows that the ratio of the intensity (A) of 3 697 cm^-1 band (corresponding to outer layer OH vibration) relative to the intensity (B) of 3 620 cm^-1 band (corresponding to inner layer OH vibration) becomes increasingly lower as the HI is becoming higher.