Hydroxyl Stretching Frequencies in the Infrared Spectra of Anthophyllites and Gedrites
Hydroxyl Stretching Frequencies in the Infrared Spectra of Anthophyllites and Gedrites
复制标题
直闪岩和闪晶石红外光谱中的羟基伸缩频率
作者：
R. Burns;A. Law
几种正交角闪石矿物(-，Na)(Mg，Fe)5Si6(Si，Al)2O22(OH，F)2的红外光谱显示出一些特征，这些特征关系到现场总体研究的红外法的准确性。观察到基羟基伸展频率的半宽变化，峰高不是强度的准确测量。这对以前基于峰高强度数据2-4的阳离子聚集的迹象提出了一些怀疑。我们希望说明如何通过最近对叶绿石结构的改进来解释半宽度的变化5，并讨论用红外方法研究立地种群时可能固有的误差。
THE infrared spectra of several orthorhombic amphibole minerals of the anthophyllite–gedrite series, (□,Na)(Mg, Fe)5Si6(Si,Al)2O22(OH,F)2, show features which bear on the accuracy of the infrared method for site population studies1,2. It has been observed that half-widths of the fundamental hydroxyl stretching frequencies vary, and that peak height is not an accurate measure of intensity. This throws some doubt on previous indications of cation clustering which were based on peak height intensity data2–4. We wish to show how the variation in half-widths may be explained by a recent refinement of the anthophyllite structure5and to discuss errors that may be inherent in site population studies by the infrared method.