干旱区生态环境知识资源中心(Arid): Integrated studies to identify site-specific parameters for environmentally benign mining operations: A case study from the Sukari Gold Mine, Egypt

Arid

DOI	10.1016/j.scitotenv.2020.141654
	Integrated studies to identify site-specific parameters for environmentally benign mining operations: A case study from the Sukari Gold Mine, Egypt
	Abdelaal, Ahmed; Sultan, Mohamed; Elhebiry, Mohamed; Krishnamurthy, R., V; Sturchio, Neil
通讯作者	Sultan, M
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2021
卷号	750
英文摘要	This study integrates observations fromfield and remote sensing data, along with geochemical and isotopic analyses, to assess the environmental impacts of cyanidation and mining activities in the Sukari gold mine (SGM), Eastern Desert, Egypt, in particular, and the orogenic gold deposits of the Arabian-Nubian Shield (ANS) in general. Our findings indicate: (1) groundwater flows south to north in the highly fractured basement aquifer related to the brittle deformation associatedwith the Najd Fault System; (2) massive gabbroic bodies separate the fractured basement aquifer into east andwest conduits; (3) the tailings storage facility (TSF) pond and leach pad were constructed over the west conduit; and (4) cyanide-richwastewater has leaked downward through tears and cuts in the lining of the TSF pond into the fractured aquifer and cyanide contaminants have migrated northward along the west conduit. Evidence for the latter includes: (1) toxic concentrations of cyanide (total: 0.018-9.4 mg/L; free weak-acid dissociable: 0.003-0.7 mg/L) were observed in groundwater samples north of the TSF pond; (2) similarities in electrical conductivity (EC) values and chloride/bromide (Cl-/Br-) ratios between groundwater north of the pond (EC: 88.8 mS/cm; Cl-/Br-: 346 to 363) and those of the TSF pond water (mean EC: 99 mS/cm; Cl-/Br-: 242 to 383) were observed; (3) the geochemical (e.g., sodium [Na+], Cl-) and isotopic compositions (delta O-18 and delta H-2 values) of groundwater are consistent with mixing of groundwater upgradient from the SGM with isotopically enriched pond water; and (4) cyanide contamination could not have resulted from an overflow of the TSF pond during flash flood events, given that rainfall is negligible and effective flood control systems are in place. Our findings show that the international codes/regulations do not fully address site-specific characteristics and highlight the importance of considering these parameters in mining of orogenic gold deposits in the ANS. (C) 2020 The Authors. Published by Elsevier B.V.
英文关键词	Cyanide contamination Groundwater Eastern Desert of Egypt Sukari gold mine
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000585694600075
WOS关键词	CENTRAL EASTERN DESERT ; ARABIAN-NUBIAN SHIELD ; NAJD SHEAR SYSTEM ; CYANIDE COMPLEXES ; STABLE-ISOTOPES ; AFRICAN OROGEN ; SAUDI-ARABIA ; RED-SEA ; GROUNDWATER ; AQUIFERS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327966
作者单位	[Abdelaal, Ahmed] Port Said Univ, Fac Sci, Environm Sci Dept, Port Said 42526, Egypt; [Abdelaal, Ahmed; Sultan, Mohamed; Elhebiry, Mohamed; Krishnamurthy, R., V] Western Michigan Univ, Dept Geol & Environm Sci, 1903 W Michigan Ave, Kalamazoo, MI 49008 USA; [Elhebiry, Mohamed] Al Azhar Univ, Fac Sci, Geol Dept, Cairo 11884, Egypt; [Sturchio, Neil] Univ Delaware, Dept Geol Sci, Newark, DE 19716 USA
推荐引用方式 GB/T 7714	Abdelaal, Ahmed,Sultan, Mohamed,Elhebiry, Mohamed,et al. Integrated studies to identify site-specific parameters for environmentally benign mining operations: A case study from the Sukari Gold Mine, Egypt[J],2021,750.
APA	Abdelaal, Ahmed,Sultan, Mohamed,Elhebiry, Mohamed,Krishnamurthy, R., V,&Sturchio, Neil.(2021).Integrated studies to identify site-specific parameters for environmentally benign mining operations: A case study from the Sukari Gold Mine, Egypt.SCIENCE OF THE TOTAL ENVIRONMENT,750.
MLA	Abdelaal, Ahmed,et al."Integrated studies to identify site-specific parameters for environmentally benign mining operations: A case study from the Sukari Gold Mine, Egypt".SCIENCE OF THE TOTAL ENVIRONMENT 750(2021).