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DOI	10.1180/claymin.2011.046.1.137
	Quantification of hematite from the visible diffuse reflectance spectrum: effects of aluminium substitution and grain morphology
	Liu, Q. S.; Torrent, J.; Barron, V.; Duan, Z. Q.; Bloemendal, J.
通讯作者	Liu, QS (通讯作者)
发表日期	2011
ISSN	0009-8558
起始页码	137
结束页码	147
卷号	46 期号:1
英文摘要	Hematite exists ubiquitously in soils and sediments, and is commonly aluminium (Al)-substituted. This study investigated systematically the effects of Al substitution on the visible diffuse reflectance spectrum (DRS) of hematite by using several sets of synthetic samples. We found that the position and amplitude of the characteristic absorption band of hematite (estimated from the first-and second-order derivative curves of the Kubelka-Munk remission function spectrum derived from the DRS) was significantly affected by the degree of Al substitution as well as by sample grain morphology. Therefore, there are ambiguities in quantifying the degree of Al substitution and the mass concentration of hematite using DRS. Nevertheless, if hematite forms under similar environmental conditions, it is possible to establish a transfer function between the DRS parameters and hematite concentration as discussed here for a Chinese loess-palaeosol sequence.
关键词	CHINESE LOESS PLATEAU PHOSPHATE ADSORPTION MAGNETIC-ANOMALIES CRYSTAL PROPERTIES SIZED HEMATITE OXIDE MINERALS SPECTROSCOPY COLOR MARS IDENTIFICATION
英文关键词	hematite; diffuse reflectance spectroscopy; aluminium substitution
语种	英语
WOS研究方向	Chemistry ; Geology ; Mineralogy
WOS类目	Chemistry, Physical ; Geosciences, Multidisciplinary ; Mineralogy
WOS记录号	WOS:000288539700010
来源期刊	CLAY MINERALS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257922
推荐引用方式 GB/T 7714	Liu, Q. S.,Torrent, J.,Barron, V.,et al. Quantification of hematite from the visible diffuse reflectance spectrum: effects of aluminium substitution and grain morphology[J]. 中国科学院青藏高原研究所,2011,46(1).
APA	Liu, Q. S.,Torrent, J.,Barron, V.,Duan, Z. Q.,&Bloemendal, J..(2011).Quantification of hematite from the visible diffuse reflectance spectrum: effects of aluminium substitution and grain morphology.CLAY MINERALS,46(1).
MLA	Liu, Q. S.,et al."Quantification of hematite from the visible diffuse reflectance spectrum: effects of aluminium substitution and grain morphology".CLAY MINERALS 46.1(2011).