异性石中平面四配位Fe^(2+)的穆斯堡尔谱研究  

MOSSBAUER SPECTRUM OF SQUARE PLANAR COORDINATED Fe^(2+) IN EUDIALYTE

作　　者：阚学敏[1] 张恩林[2] 南君亚[2] 

机构地区：[1]中国科学院地区新技术研究所,广州510640 [2]中国科学院地球化学研究所,贵阳550002

出　　处：《矿物学报》1994年第2期142-146,共5页Acta Mineralogica Sinica

摘　　要：除硅铁钡矿之处，异性石是迄今仅知的另一种含有平面四配位Fe2+的矿物。异性石晶体样品为玫瑰色，透明，有油脂光泽，取自一花岗岩标本。异性石中平面四配位Fe2+的穆斯堡尔参数：化学位移=0．785（mm／s）（相对天然铁），四极短分裂=0.419（mm／s），明显地低于大多数硅酸盐矿物中的Fe2+，但和硅铁钡矿的Fe2+十分相近。本文对硅酸盐矿物中Fe2+的杜斯堡尔参数与配位数之间的关系做了讨论。In addition to gillespite, eudialyte is another kind of mineral so far knowm, in which Fe2+ is square planar coordinated. The eudialyte sample, glossy and transparent in nossy, was found in a specimen of alkali granite. Mossbauer parameters of the square planar coordinated Fe2+ in eudia lyte are:I. S. =0. 785mm/s (to natural iron)Q. S =0. 419mm/smuch smaller than those of Fe2+ in most silicate minerals, but similar to those in gillespite. The relationship between the Mossbauer parameters and the coordination of Fe2+ in silicate minerals are discussed as well.

关 键 词：异性石 穆斯堡尔谱 铁原子 

分 类 号：P575.9[天文地球—矿物学]