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首页> 外文期刊>Crystallography reports >Stability of the modulated structure of Baikal lazurite and its recrystallization at a temperature of 600 degrees C over a wide range of sulfur dioxide fugacities
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Stability of the modulated structure of Baikal lazurite and its recrystallization at a temperature of 600 degrees C over a wide range of sulfur dioxide fugacities

机译：贝加尔湖lazurite的调制结构的稳定性及其在600摄氏度的温度下在各种二氧化硫逸度下的重结晶

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摘要

The stability of three-dimensional incommensurate modulation in cubic lazurite from the Baikal region is experimentally investigated at T = 600 degrees C. It is found that the X-ray photoelectron spectra of the annealed samples exhibit a peal, corresponding to sulfite and a split peak associated with the (Na,Ca)SO4 sulfate. It is assumed that the splitting is caused by the ordering of the complexes not involved in the framework. This assumption is confirmed by the presence of a similar split peak in the X-ray photoelectron spectra of triclinic lazurite. It is demonstrated that the initial modulation is retained at the fugacity f(SO2) = 8 X 10(-3) bar. The decisive factors responsible for the retention of the three-dimensional incommensurate modulation are the temperature and the fugacity of sulfur dioxide. The latter quantity should be close to the stability boundary of the basic lazurite structure. The growth and transformation mechanisms of the modulation formation are considered. (C) 2005 Pleiades Publishing, Inc.
机译：在T = 600℃下，对来自贝加尔湖地区的立方天青石中三维不对称调制的稳定性进行了实验研究。发现退火样品的X射线光电子能谱显示出一个皮脂，对应于亚硫酸盐和一个分裂峰与（Na，Ca）SO4硫酸盐有关。假定拆分是由框架中未涉及的复合物的排序引起的。该假设通过三斜斜方晶石的X射线光电子能谱中存在类似的分裂峰而得到证实。证明了初始调制保持在逸度f（SO2）= 8 X 10（-3）bar。保持三维不相称调制的决定性因素是温度和二氧化硫的逸度。后者的数量应接近于基本Lazurite结构的稳定性边界。考虑了调制形成的生长和转化机理。 （C）2005年Pleiades Publishing，Inc.

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