干旱区生态环境知识资源中心(Arid): Stream sediment geochemical exploration for gold in Central Eastern Desert, Egypt: Application of the concentration-number fractal model, factor analysis, and geochemical mineralization probability index

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DOI	10.1016/j.chemer.2021.125811
	Stream sediment geochemical exploration for gold in Central Eastern Desert, Egypt: Application of the concentration-number fractal model, factor analysis, and geochemical mineralization probability index
	Helba, Hossam A.; Khalil, Khalil I.; El-Farnawany, Hany M.; El-Raghy, Samy A.
通讯作者	Helba, HA (corresponding author), Alexandria Univ, Fac Sci, Alexandria 21511, Egypt.
来源期刊	GEOCHEMISTRY
ISSN	0009-2819
EISSN	1611-5864
出版年	2021
卷号	81 期号:4
英文摘要	Geochemical exploration by stream sediment sampling using bulk leach extractable gold (BLEG) technique and applying concentration-number (C-N) fractal model, factor analysis (FA), and geochemical mineralization probability index (GMPI) resulted in the recognition of new Au occurrences around the Sukari gold mine in the central Eastern Desert of Egypt. The geochemical data of 128 stream sediment samples collected from the study area was used for delineating the geochemical anomalies and characterizing the dispersion trains of ore and associated elements (Au, Ag, As, Sb, Cu, Pb, Zn, Mo). Statistical analysis of the geochemical data applying the CN fractal modeling enabled us to identify significant anomaly and background populations of the investigated elements and to construct reliable geochemical anomaly maps. Factor analysis using centered log-ratios (CLR), to address the problem of closed compositional data, revealed significant element associations for mineralization (Au, As, Mo, Zn, Ba), country rock compositions (Rb, Li, Be, Sn, Bi for granite, and Co, Cr, Ni for mafic rocks), and element mobility (e.g. Sb, Zr, and Ag). Weak and moderate Au anomalies that cannot be detected by factor score maps can be delineated clearly by using the C-N fractal method and GMPI distribution map. Our study revealed that Ag, As, and Sb are the main pathfinder elements for gold mineralization in arid to semiarid regions exemplified by the Sukari gold district. Silver can be used as a direct pathfinder, whereas As and Sb are indirect pathfinders for Au in such regions. The spatial distribution of Au and Ag anomalies indicate that gold mineralization in the Sukari district is structurally controlled. However, the spatial distribution of Cu, Pb, Zn, and Mo is controlled by mineralogical and lithological factors and is not related to any significant base metal deposits.
英文关键词	Handling Editor Behnam Sadegi BLEG sampling C-N fractal model Geochemical anomaly maps Factor analysis Geochemical mineralization probability index Sukari gold district-Egypt
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000728580700002
WOS关键词	STEPWISE FACTOR-ANALYSIS ; STAGED FACTOR-ANALYSIS ; 1/100,000 SHEET ; MULTIVARIATE-ANALYSIS ; OROGENIC GOLD ; ANOMALIES ; DELINEATION ; DEPOSIT ; AREA ; SEPARATION
WOS类目	Geochemistry & Geophysics
WOS研究方向	Geochemistry & Geophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/373698
作者单位	[Helba, Hossam A.; Khalil, Khalil I.] Alexandria Univ, Fac Sci, Geol Dept, Alexandria, Egypt; [El-Farnawany, Hany M.; El-Raghy, Samy A.] Sukari Gold Mines Co, Alexandria, Egypt
推荐引用方式 GB/T 7714	Helba, Hossam A.,Khalil, Khalil I.,El-Farnawany, Hany M.,et al. Stream sediment geochemical exploration for gold in Central Eastern Desert, Egypt: Application of the concentration-number fractal model, factor analysis, and geochemical mineralization probability index[J],2021,81(4).
APA	Helba, Hossam A.,Khalil, Khalil I.,El-Farnawany, Hany M.,&El-Raghy, Samy A..(2021).Stream sediment geochemical exploration for gold in Central Eastern Desert, Egypt: Application of the concentration-number fractal model, factor analysis, and geochemical mineralization probability index.GEOCHEMISTRY,81(4).
MLA	Helba, Hossam A.,et al."Stream sediment geochemical exploration for gold in Central Eastern Desert, Egypt: Application of the concentration-number fractal model, factor analysis, and geochemical mineralization probability index".GEOCHEMISTRY 81.4(2021).