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《JOURNAL OF GEMS & GEMMOLOGY》 1999-04
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MINERALOGY AND GEMMOLOGY OF SHOUSHAN STONE

Tang Depins(Gemstone Identification and Reecarch Center, Fuzhou Univeraity,Fuzhou, 350002)Zheng Zongtan(Fuzhou Carving Arts & Crafts Factory,Fuzhou, 350005)  
Shoushan Stone is a famous gemstone in Fujian and has more than 100 varieties, Over 50samples of Shoushan Stone have been studied using XRD and IR.Shoushan Stone can be divided intothree groups based upon the density. The first group has density of 2. 57~2.67 g/cm3, consisting mainly of dickite;The second has density of 2.71~2.79 g/cm3, containing illite;The third has density of2. 81~2.87 g/cm3, with pyrophyllite as its major mineral. Therefore, it is possible to determine theirmineral constituent on basis of their densities. There are differences in the mineral constituent betweenthe varieties of Shoushan Stone. Gaoshan Stone,Duchengkeng Stone and Kengtou Stone are composedof dickite, Yuewei Stone and Furong Stone consist of pyrophyllite. Shanbodong and Qijiang Stones contain kaolinite. Tianhuang Stone, the best variety among Shoushan Stone, is complex in their mineralconstituent, and dickite f nacrite or illite have been found as the major mineral. Most of samples of Tianhuang Stone have illite as a minor mineral, which seems to be an important feature of Tianhuang Stoneand is probably related to hydration during its formation.
【Fund】: 福建省科委资助
【CateGory Index】: P619.28
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