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LU Bao - qi 《上海大学学报(英文版)》2005,9(4):365-368
Infrared （IR） absorption spectra and X-ray powder diffraction （XRD） patterrns of sexpenfine cat＇s eye from Sichuan Province have been investigated, and infrared absorption bands of the serpentine have been assigned in this paper. The results indicate that the bands near 3 600 - 3 700 cm^-1 belong to the stretching absorption band VOH, the bands in 948 - 1 100 cm^-1 axe assigned to the stretching vibraling band Usvo, and the bands at 600 570 and 440 cm^-1 respectively belong to the bending vibration band VOH, δMg-O and δSi-O. The serpentine cat＇ s eye includes two types： chrysotile and antigorite. Chrysotile has a sharp and intensive band at 3 688 cm^-1 and a weak band at 3 643 cm^-1 , while antigorite has only one intensive band in the region. At vibration band VSi-O, chrysotile and antigorite have a similar feature at 1 071 cm^-1, but the band at 980 cm^-1 in anfigorite has been split into two bands in chrysotile - a strong one at 1 027 cm^-1 and a weak one at 949 cm^-1. In addition, antigorite has a characteristic bending vibrating band δMg-O at 570 cm^-1. Based on the analysis of the feature of crystal structure, their IR differences axe well explained. 相似文献
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1IntroductionSerpentine used as inorganic material inindustry hasbeeninvestigated for many years[1-3].But there are noreports on serpentine cat’s eye owing to its rarity.During our recent field investigation in Sichuan Prov-ince,southwest of China,for the first ti me we discov-ered the rare serpentine cat’s eye with well-growntex-ture and,if properly polished,a vivid cat eye effect(see Fig.1).Weng,et al.[4]also reported the newdiscovery of nephrite cat’s eyes inthis region.Serpen-tine can… 相似文献
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