Hydroxyl groups in nonmetamict chevkinite-(Ce): a crystal chemical discussion
文献类型：期刊论文
| 作者 | Yang Zhuming1; Pertlik, Franz2; Fleck, Michel2 |
| 刊名 | JOURNAL OF RARE EARTHS
 |
| 出版日期 | 2008-08-01 |
| 卷号 | 26期号:4页码:609-613 |
| 关键词 | chevkinite-(Ce) infrared spectrum bond-valance sum bond length hydroxyl groups rare earths |
| ISSN号 | 1002-0721 |
| 文献子类 | Article |
| 英文摘要 | The minerals of chevkinite group were commonly considered to be anhydrous minerals. The infrared absorption spectrum of natural nonmetamict chevkinite-(Ce) front the aegirine-alkali granite, Mianning, Sichuan Province, China, exhibited two broad peaks in the 3600-2800 cm(-1) region owing to the OH stretching. The corresponding H2O content required for the charge balance in formula was 1.27%. The O-H center dot center dot center dot O bond lengths maight cover from 0.2658 to 0.2794 nm by the correlated OH stretching energies. An electrostatic charge balance for chevkinite-(Ce) based on the assigned site-population from chemical data was calculated without the hydrogen contribution. The resulting empirical bond-valence sum on 06, 08, 02, 03, 05, and 04 ranged from 1.73 to 1.95 vu. The partial substitution of 0 by OH may occur in four atom sites: O6, O2, O4, and O5. The small differences in the bond-valence sums between the supposed donors and acceptors may mean a mixed donor/acceptor role of the involved oxygen atoms. The IR spectral features between 3394 and 3035 cm(-1) consisted of various hydrous species at different structural sites and orientations. The OH groups in the chevkinite-(Ce) appeared to be involved in local charge imbalance in the structure and to be present when the mineral crystallized hydrothermally. |
| WOS关键词 | HYDROGEN-BOND ; RARE-EARTH ; METAMICT ; MINERALS ; RECRYSTALLIZATION ; TITANITE ; OXIDES ; ZIRCON ; DAMAGE ; STATE |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000259591900029 |
| 出版者 | METALLURGICAL INDUSTRY PRESS |
| 资助机构 | National Natural Science Foundation of China(40572029) ; National Natural Science Foundation of China(40572029) ; National Natural Science Foundation of China(40572029) ; National Natural Science Foundation of China(40572029) ; National Natural Science Foundation of China(40572029) ; National Natural Science Foundation of China(40572029) ; National Natural Science Foundation of China(40572029) ; National Natural Science Foundation of China(40572029) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/68766]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Yang Zhuming |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Engn Geomech, Beijing 100029, Peoples R China 2.Univ Vienna, Inst Mineral & Crystallog, Geozentre, A-1090 Vienna, Austria |
| 推荐引用方式 GB/T 7714 | Yang Zhuming,Pertlik, Franz,Fleck, Michel. Hydroxyl groups in nonmetamict chevkinite-(Ce): a crystal chemical discussion[J]. JOURNAL OF RARE EARTHS,2008,26(4):609-613. |
| APA | Yang Zhuming,Pertlik, Franz,&Fleck, Michel.(2008).Hydroxyl groups in nonmetamict chevkinite-(Ce): a crystal chemical discussion.JOURNAL OF RARE EARTHS,26(4),609-613. |
| MLA | Yang Zhuming,et al."Hydroxyl groups in nonmetamict chevkinite-(Ce): a crystal chemical discussion".JOURNAL OF RARE EARTHS 26.4(2008):609-613. |
入库方式： OAI收割
来源：地质与地球物理研究所
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