干旱区生态环境知识资源中心(Arid): Spectroscopic Characterizations of Sand Dunes Minerals of El-Oued (Northeast Algerian Sahara) by FTIR, XRF and XRD Analyses

Arid

DOI	10.1007/s12633-019-00109-5
	Spectroscopic Characterizations of Sand Dunes Minerals of El-Oued (Northeast Algerian Sahara) by FTIR, XRF and XRD Analyses
	Meftah, Nassima 1; Mahboub, Mohammed Sadok 1,2
通讯作者	Meftah, Nassima
来源期刊	SILICON
ISSN	1876-990X
EISSN	1876-9918
出版年	2020
卷号	12 期号:1 页码:147-153
英文摘要	This paper investigates the chemical and crystal structural properties of sand dunes of El-Oued region from the northeast Sahara of Algeria. By using of Fourier-transform infrared (FT-IR) spectroscopy, X-ray fluorescence (XRF) and X-ray diffraction (XRD) we show that El-Oued sand dunes are composed mainly of 97.6% alpha-quartz (SiO2) and 0.56% calcite (CaCO3). Very low concentrations of some oxides as Al2O3, Fe2O3, MgO and trace elements impurities were also found. The calculated crystallinity index CI = 0.975 confirm the highly crystalline nature of quartz. From the X-ray diffraction data, structural parameters of quartz and calcite minerals were determined. Quartz grains were found to have a hexagonal crystal structure with lattice parameters of a = b = 4.907 angstrom and c = 5.401 angstrom and calcite grains have a trigonal crystal structure with a = b = 4.977 angstrom and c = 17.04 angstrom. The calculated lattice parameters were similar to those of standard references. The crystallite sizes of quartz and calcite were estimated to be nanometric.
英文关键词	Sand dunes Quartz Calcite X-rays diffraction Fourier-transform infrared Structural parameters
类型	Article
语种	英语
国家	Algeria
收录类别	SCI-E
WOS记录号	WOS:000511866900016
WOS关键词	DESERT SAND ; QUARTZ ; SILICON ; OUARGLA ; CRYSTALLINITY
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary
WOS研究方向	Chemistry ; Materials Science
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315570
作者单位	1.Univ El Oued, Fac Exact Sci, Dept Phys, El Oued 39000, Algeria; 2.Univ El Oued, Fac Exact Sci, LEVRES Lab, El Oued 39000, Algeria
推荐引用方式 GB/T 7714	Meftah, Nassima,Mahboub, Mohammed Sadok. Spectroscopic Characterizations of Sand Dunes Minerals of El-Oued (Northeast Algerian Sahara) by FTIR, XRF and XRD Analyses[J],2020,12(1):147-153.
APA	Meftah, Nassima,&Mahboub, Mohammed Sadok.(2020).Spectroscopic Characterizations of Sand Dunes Minerals of El-Oued (Northeast Algerian Sahara) by FTIR, XRF and XRD Analyses.SILICON,12(1),147-153.
MLA	Meftah, Nassima,et al."Spectroscopic Characterizations of Sand Dunes Minerals of El-Oued (Northeast Algerian Sahara) by FTIR, XRF and XRD Analyses".SILICON 12.1(2020):147-153.