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《Geochimica》 2015-01
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Mineral composition and origin of a stone-eye on Duanxi Inkstone from Zhaoqing, Guangdong

WANG Fu-ya;WEI Jing-ming;MIN Yu-shun;XIE Xian-de;WANG Chun-yun;TAN Dao-yong;Guangzhou Institute of Geochemistry, Chinese Academy of Sciences;Guangdong Academician Work Station Affiliated with Zhaoqing Institute of Duanxi Inkslab Research;University of Chinese Academy of Sciences;  
Stone eye, a distinctive mark of Duanxi Inkstone, has attracted attention of inkstone lovers in the long history of inkstone utilization, this is simply because stone eye mark is one of the key factors that can effectively enhance the professional connoisseurship and increase the market value of inkstone. This study was focused on the stone eye on Duanxi inkstone from Meihuakeng pit in Zhaoqing. By using advanced Laser Raman spectroscopic technique fitted with microscope, the mineral composition at different parts of a stone eye mark was observed and tested. As indicated by our experimental results, carbon occurs in the groundmass around the stone eye mark of inkstone mainly in the form of graphite phase; Carbon also occurs at the eyelid of the stone eye mark is postulated to be resulted from increased contents of stone eye marks, but in the form of carbon microspheres. Dark color that happens at the eyelid consists of hematite and graphite and occurrence of black glass phase. In contrast, grey color that occurs at the eyeball of the stone eye mark is postulated to be resulted from major mineral constituents being illite and quartz, decreased contents of hematite and graphite and disappearance of chlorite. The maroon color at the pupil of the stone eye mark is resulted from rutile, rather than from the hematite, the latter being the long-held view of the academics. It is inferred that stone eye marks of purple Duanxi Inkstone are closely related to volcanism, as stone eye marks are resulted from light metamorphism of volcanic tuff-related dust that was deposited in the silty clay formed in the gulf or tidal flat sedimentary environment.
【Fund】: 广东省肇庆市端州区科学技术协会资助项目
【CateGory Index】: P619.28
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1 CHEN Zhi-qiang1,HE Xiao-qing1,LU You-ren2 and YU Heng-xiang2 1.Shenzhen Academy of Metrology and Quality Inspection,Shenzhen 518055,China;2.Department of Resources and Environmental Engineering,Guilin University of Technology,Guilin 541004,China;Geochemical characteristics of trace elements of the Duanxi Inkstone[J];Geochimica;2011-04
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