| 银星石晶体结构的测定 |
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| 引用本文： | 傅平秋.银星石晶体结构的测定[J].地质科学,1966,7(2):116-135. |
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| 作者姓名： | 傅平秋 |
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| 摘 要： | 有关银星石的矿物学工作,不少学者作过研究,但对其化学式、晶胞参数等有不同看法,对于空间群的判定亦未作详细叙述。本文通过银星石晶体结构的测定认为该矿物属斜方晶系,空间群系 C2v9-P（c2）1n而非 D2h16-Pcmn,共化学式为 Al3（OH）3（PO4）2·6H2O,每个晶胞中含有四个分子。同时文中也对银星石的物理性质作了较满意的解释。
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| 关 键 词： | , |
THE CRYSTAL STRUCTURE OF WAVELLITE |
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| Fu PING-QIU.THE CRYSTAL STRUCTURE OF WAVELLITE[J].Chinese Journal of Geology,1966,7(2):116-135. |
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| Authors: | Fu PING-QIU |
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| Abstract: | Wavellite is orthorhmbic,space group C2v9—Pc21n.Unit-cell a0=9.57,b0= 17.3,c0=6.98,Z=4 molecules.The structural formula of wavellite is Al3（OH）3（PO4）2·6H2O. On the basis of Patterson function,the crystal structure of wavellite was solved. By means of the Model and Fourier method the oxygen position was determined. The crystal structure of wavellite is constructed by continuously linked chains of AI—O octahedra,which have three different coordinations,linked top to top but inc- lining to either left or right.The chain is along c-axis.The chains are connected by P—O tetrahedra in two different ways constructing a three-dimensional loose framework. According to this result an interpretation of the main physical properties of this mineral was satisfactorily obtained. |
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| Keywords: | , |
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