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The characteristics of Mossbauer spectra for a sample of schorlomite are described in this paper. There are 7 fitting doublets, three of which are considered as anomalous absorptions and their origin may come front complex electronic processes occurring in the schor]omite. It has been found that the isomer shift (IS) of Fe~(3 ) exhibits an apparent temperature effectin the mineral studied. 相似文献
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Twenty-eight samples of garnet are collected and divided into five groups by thepresent authors. The Mossbauer spectra of the garnets are measured at room temperature.The line width and intensity of two component peaks of Fe~(2 ) doublet for pyropes inkimberlite and inclusions of basalt are always not equal. The degree of intensity asymmetryof Fe~(2 ) doublet is denoted by DA. We have found that the DA is closely related to pyropeend-member molecule percentage (X_1), uvarovite and hanleite end-member molecule percent-age (X_2) and Cr_2O_3 wt.% (X_3). The linear equations are obtained: DA=-8.43 0.31X_1,DA=12.15 0.62X_2, DA=11.92 1.88X_3. Finally a multiple regression equation isderived: DA=8.24 0.05X_1 0.63X_2. The next nearest neighbour effect of Cr~(3 ) ionsin pyrope plays an important role for the origin of the asymmetry of Fe~(2 ) doublet. TheMossbauer spectra of other four groups of garnet are discussed in the present paper. 相似文献
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本文描述了一个钛榴石样品穆斯堡尔谱的特征,有七个拟合的双峰,其中三个被认为是反常的吸收,它们可归因于发生在钛榴石中复杂的电子过程.还发现在这种矿物中Fe~(3 )的同质异能移位(IS) 显示明显的温度效应。 相似文献
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