| 巨晶普通辉石的M1位分裂 |
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| 引用本文： | 李一良,支霞臣,李玉芝,李铁,张裕恒.巨晶普通辉石的M1位分裂[J].矿物岩石地球化学通报,1996(3). |
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| 作者姓名： | 李一良 支霞臣 李玉芝 李铁 张裕恒 |
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| 作者单位： | 中国科学技术大学 |
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| 摘 要： | 巨晶普通辉石的Ｍ１位分裂李一良，支霞臣，李玉芝，李铁，张裕恒（中国科学技术大学，合肥２３００２６）关键词巨晶辉石，Ｍ１位分裂，面积约束法，近邻边效应，Ｔ位铁单斜辉石的穆斯堡尔谱学研究历时已久。但由于其晶体结构和成份的复杂性、化学不均一性及出溶现象等［...
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| 关 键 词： | 巨晶辉石，M1位分裂，面积约束法，近邻边效应，T位铁 |
M1 Site Splitting of Clinopyroxene Megacrysts |
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| Li Yiliang,Zhi Xiachen,Li Yuzhi,Li Tie,Zhang Yuheng.M1 Site Splitting of Clinopyroxene Megacrysts[J].Bulletin of Mineralogy Petrology and Geochemistry,1996(3). |
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| Authors: | Li Yiliang Zhi Xiachen Li Yuzhi Li Tie Zhang Yuheng |
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| Abstract: | it is difficult to interpret the Mossbauer spectra of clinopyroxene because of high Fe3+ contents,exsolution and chemical inhomogeneity.Mineralogists commonly consider that when Fe3+ is present it is selectively concentrated in the regular octahedral M1 site. But we find that some Fe3+ is-distributed in tetrahedral sites in relation to the aluminum content,and a coupled substitution, R2+ +Si= Fe3+ +Al,leads to Fe3+ occurrence in tetrahedral and octahedral sites in aluminum -bearing Cpx.It is possible that M1 site of Cpx-megacrysts studied has been splitted into distinct two clusters with remarkably different hyperfine parameters because of the Next Nearest Neighbor(NNN)Effects.It is the Ca content in M2 site that governs. the NNN configurations. |
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