Mineralogical alteration of thermally treated siderite in air: Mossbauer spectroscopy results

	Mineralogical alteration of thermally treated siderite in air: Mossbauer spectroscopy results
	Pan, YX ; Zhu, RX ; Ping, JY
刊名	CHINESE SCIENCE BULLETIN
	1999-09-01
卷号	44 期号:18 页码:1712-1717
关键词	siderite mienralogical phase transition thermally treated in air
ISSN号	1001-6538
文献子类	Article
英文摘要	Mineralogical alternation of thermally treated siderite in air atmosphere has been systematically analyzed by Mossbauer effects. It was preliminarily estimated from the area of subspectra that 4%, 39% and 62% of magnetite were formed at 410 degrees C, 490 degrees C and 510 degrees C respectively. After being incrementally heated at 530 degrees C the spectra consist of two sextets of Fe3O4. Sextet of gamma-Fe2O3 with hyperfine field of 50T was observed at 550 degrees C. Spectra at 580 degrees C consisted of two sextets with hyperfine fields caused by gamma-Fe2O3 and alpha-Fe2O3. Fe3O4 disappeared and the amount of gamma-Fe2O3 decreased, while the quantity of alpha-Fe2O3 increased to 34% and 77% at 640 degrees C and 690 degrees C, respectively. During the early stage of decomposition and oxidation, FeO was probably produced but quickly oxidized to magnetite and unidentified in our experiment. These results, in good agreement with the X-ray diffraction analyses and microscopic observation, provide an interpretation to anomalous magnetic property changes of siderite-bearing rock samples.
WOS关键词	DECOMPOSITION
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000083584600020
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/75304]
专题	中国科学院地质与地球物理研究所
通讯作者	Pan, YX
作者单位	1.Chinese Acad Sci, Inst Geophys, Beijing 100101, Peoples R China 2.Beijing Univ Sci & Technol, Dept Phys Mat, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Pan, YX,Zhu, RX,Ping, JY. Mineralogical alteration of thermally treated siderite in air: Mossbauer spectroscopy results[J]. CHINESE SCIENCE BULLETIN,1999,44(18):1712-1717.
APA	Pan, YX,Zhu, RX,&Ping, JY.(1999).Mineralogical alteration of thermally treated siderite in air: Mossbauer spectroscopy results.CHINESE SCIENCE BULLETIN,44(18),1712-1717.
MLA	Pan, YX,et al."Mineralogical alteration of thermally treated siderite in air: Mossbauer spectroscopy results".CHINESE SCIENCE BULLETIN 44.18(1999):1712-1717.