Study on Microstructure of Nano-Minerals in Chrysanthemum Stone

详细信息   

• 责任者：Wu Cuilan (Center for Electron Microscopy ; College of Material Science and Engineering ; Hunan University ; Changsha 410082 ; China) ; Chen Jianghua
• 刊名：Rock and Mineral Analysis
• 出版年：2008
• 卷期：27(3)
• 关键词：观赏石 ; ornamental stones ; 透射电子显微术 ; transmission electron microscopy ; 扫描电子显微术 ; scanning electron microscopy ; 湖南 ; Hunan
• 页码：p.161-164
• 图表：3 illus., 14 refs.)&
• 分类号：0900
• issnNo：ISSN0254-5357
• isbnNo：CN11-2131/TD

摘要

Chrysanthemum stone is a diagenetic celestite nodule widely distributed in the Permian Chihsia Formation of South China. The microstructure of chrysanthemum stone from Liuyang was studied using scanning electron microscope (SEM), transmission electron microscope (TEM) and X-ray energy dispersive spectrometer (EDS). It was found that the petals in chrysanthemum stone from Liuyang retained the original celestite and their rectangular pyramid shape, but silicifieation was observed in celestite petals. In chrysanthemum stone, there are many types of nanometer minerals, such as amorphous silica nanometer threads, CaCO₃ or SrSO₄ nanometer grains, CaCO₃ nanometer bands and lamellas. Some amorphous silica nanometer threads were enclosed by nano-crystals, which were related to magnesium.