| 索伦石的晶体结构 |
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| 引用本文： | 湖北地质学院X光实验室.索伦石的晶体结构[J].地质科学,1974,9(2):117-132. |
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| 作者姓名： | 湖北地质学院X光实验室 |
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| 作者单位： | 湖北地质学院X光实验室 |
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| 摘 要： | 索伦石是1961年在我国发现的一种新矿物。成分为CaO·SiO2·H2O,是人工和天然的含水硅酸钙矿物中CaO∶SiO2∶H2O=1:1:1的唯一一种矿物,因此索伦石结构的测定对了解这一类矿物的晶体化学当有助益。
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| 关 键 词： | , |
THE CRYSTAL STRUCTURE OF SUOLUNITE |
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| X-RAY LABORATORY,HuPEH GEOLOGIC COLLEGE.THE CRYSTAL STRUCTURE OF SUOLUNITE[J].Chinese Journal of Geology,1974,9(2):117-132. |
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| Authors: | X-RAY LABORATORY HuPEH GEOLOGIC COLLEGE |
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| Institution: | X-RAY LABORATORY, HuPEH GEOLOGIC COLLEGE |
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| Abstract: | Suolunite is a new mineral found in our country. Its chemical formula is CaO · SiO · H2O. It is the only mineral that has CaO : SiO : H2O = 1 : 1:1, in the synthetic and natural hydrous calcium silicate minerals. It is a true CSH material and orthorhombic with space group symmetry c2v19 = Fdd2, and a = 11.02A, 6 = 19.74A, c = 6.08A. In the structural analysis, the projection of interatomic vectors, election density section, weighted Patterson projection and superposition methods have been used. As the result of the above analyses its structural formula is found to be Ca2H2Si2O7] · H2O, the coordination number of Ca is 8 and the Si-O radical is a. double tetrahedra.Furthermore by means of balance of election valence, atomic distance and infrared absorption analysis, the distribution of H-atom in the structure is determined and its structural formula is written as Ca2Si2O5(OH)2] · H2O, adding a new example of OH radical combined with Si-O group.The phase transformation occurred in the heating of suolunite is examined. It is found that xonotlite Ca6Si6O17] (OH)2 is formed on heating to 400℃ and under loss 5/6 of its water, and wollastonite Ca3Si3O9 is presented on heating to 950℃ and under loss of all of its water. |
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