| MSSBAUER SPECTRA OF NATURAL GARNETS |
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| 引用本文： | 应育浦,李哲,胡嘉瑞.MSSBAUER SPECTRA OF NATURAL GARNETS[J].中国科学B辑(英文版),1982(9). |
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| 作者姓名： | 应育浦 李哲 胡嘉瑞 |
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| 作者单位： | Institute of Geology，Academia Sinica，Beijing，Institute of Geology，Academia Sinica，Beijing，Institute of Geology，Academia Sinica，Beijing |
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| 摘 要： | 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.
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