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化学学报
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化学学报 ›› 2011, Vol. 69 ›› Issue (19): 2259-2264. 上一篇    下一篇

研究论文

NiSO4•6H2O晶体聚集体形貌及结晶学模型的建立

王浩铮1，赵珊茸*,1，邱志惠2，徐畅1，李坤1，史冰洁1   

  1. (1中国地质大学(武汉)地球科学学院 武汉 430074)
    (2广西师范大学化学化工学院 桂林 541004)
  • 投稿日期:2011-03-28 修回日期:2011-06-10 发布日期:2011-06-23
  • 通讯作者: 王浩铮 E-mail:cugwanghaozheng@sina.com
  • 基金资助:

    矿物晶体腐蚀像立体模型及其地质意义;国家人才培养基金中国地质大学（武汉）地质学基地

Aggregation Pattern of NiSO4•6H2O and Its Crystallographic Model

Wang Haozheng1 Zhao Shanrong*,1 Qiu Zhihui2 Xu Chang1, Li Kun1 Shi Bingjie1   

  1. (1 Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074)
    (2 School of Chemistry and Chemical Engineering, Guangxi Normal University, Guilin 541004)
  • Received:2011-03-28 Revised:2011-06-10 Published:2011-06-23

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对四方晶系水溶性晶体NiSO4•6H2O(镍矾)进行生长实验, 得到其晶体聚集体形貌. 基于单偏光显微镜下的形貌观察和分析, 以结晶学、晶体形貌学基本原理为基础, 探讨该晶体聚集体形貌中蕴含的结晶学规律, 并建立了该晶体聚集体的结晶学模型. 在该模型中, 晶体发育单形{110}, {114}, {100}, {103}, 形成聚集体形貌时, 发育{110}的晶粒和发育{114}的晶粒以{102}共格晶界结合, 发育{100}的晶粒和发育{103}的晶粒以{112}共格晶界结合. 所获得的聚集体形貌模型与实际观察到的聚集体形貌很相似, 从而验证了模型的正确性. 模型中所计算出的所有共格晶界都为简单指数面, 说明了模型的合理性.

关键词: NiSO4•6H2O, 镍矾, 聚集体形貌, 结晶学模型

Based on the observation of aggregate patterns of NiSO4•6H2O (retgersite) formed in aqueous solution, the crystallography relationship between crystallites in the aggregates is analyzed and crystallographic model of aggregates is built. In this model, developed simple forms {110} and {114} or {103} and {100} are connected through co-lattice net {102} and {112}, respectively. The similarity between branch-like morphology formed by this model and the feature of real aggregates and the rational index co-lattice net represent the rationality of this model.

Key words: NiSO4•6H2O, retgersite, aggregate pattern, crystallographic model