名义上无水的地幔矿物中结构水的研究进展

介绍了研究名义上无水地幔矿物中的结构水的科学意义,综述了近年来该领域的一些主要研究进展。包括7个方面:①结构水赋存状态的确定;②结构水含量的测定;③氢的结合方式;④氢在结构中的位置;⑤氢的稳定性;⑥氢的溶解度;⑦氢同位素组成。指出了存在的问题以及今后的研究方向,呼吁我国学者积极加入到这一前沿领域中来。

RESEARCH PROGRESS IN STRUCTURAL WATER IN NOMINALLY ANHYDROUS MANTLE MINERALS

The scientific significance of research of trace water in nominally anhydrous mantle minerals is described; the research progress in this field are reviewed, including the following seven aspects:(1) confirmation of structural water, (2)determination of the amount of water, (3)incorporation mechanism of hydrogen, (4)the structural site of hydrogen, (5)stability of hydrogen, (6)solubility of hydrogen, and (7)hydrogen isotope compositions of some nominally anhydrous minerals; some problems and difficulties are pointed out, such as (1)the investigations of natural samples are not so enough, (2)the calibrations of IR for some minerals haven't been made, (3)we know very little about the incorporation mechanism and structural site of hydrogen, (4)there is only a little information for stability and solubility of hydrogen, and (5)hydrogen isotope compositions of nominally anhydrous minerals are scarce; the future research emphases of this field are suggested.