化学学报 ›› 1992, Vol. 50 ›› Issue (6): 527-532. 上一篇    下一篇

研究论文

钓鱼岛石晶体结构的研究

竺乃珏;郭芳;李言;申顺喜;陈丽蓉;李安春   

  1. 中国科学院化学研究所;中国科学院青岛海洋研究所
  • 发布日期:1992-06-15

Study on crystal structure of diaoyudaoite

ZHU NAIJUE;GUO FANG;LI YANMIN;SHEN SHUNXI;CHEN LIRONG;LI ANCHUN   

  • Published:1992-06-15

钓鱼岛石是钓鱼岛附近海洋沉积物中发现的一种新矿物。我们测定了不同铬含量的钓鱼岛石系列的晶体结构, 它们是由双尖晶石单元组成的层状结构, 层间由一个含有钠离子的结构层隔开, 氧原子按照立方密堆积的ABCA方式堆积。这些钓鱼岛石的六方晶格常数与其中铬的含量线性相关。本文还讨论了钓鱼岛石中铝离子被铬离子取代的情况。

关键词: 晶体结构测定, 铝离子, 铬矿物, 钓鱼岛石

Diaoyudaoite, as a new mineral, was discovered in marine deposite near Diaoyudao island, northeast of Taiwan, China. The idealized mol. formula is NaAl11O17 and its structural formula is represented by Na2O.11Al2O3. The crystal structure of a series of diaoyudaoite samples with different chromium contents was determine The structure is made up of layers of the double spinel unit and each layer is separated by a layer of sodium ions. The oxygen atoms are arranged in cubic close packing with the sequence ABCA. The hexagonal cell constants for the analyzed Diaoyudaoite samples are linearly related to the chromium concentration The replacement of aluminum by chromium is discussed.

Key words: CRYSTAL STRUCTURE DETERMINATION, ALUMINIUM ION, CHROME MINERAL, DIAOYUDAOITE

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