干旱区生态环境知识资源中心(Arid): Geology, mineralogy and genesis of the world-class Mahd Adh Dhahab epithermal Au-(Ag)-telluride deposit, Kingdom of Saudi Arabia

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DOI	10.1016/j.jseaes.2020.104510
	Geology, mineralogy and genesis of the world-class Mahd Adh Dhahab epithermal Au-(Ag)-telluride deposit, Kingdom of Saudi Arabia
	El-shafei, Shaimaa A.; Abdel-Maksoud, Kholoud M.; Helmy, Hassan M.; Ahmed, Ahmed H.
通讯作者	Helmy, HM
来源期刊	JOURNAL OF ASIAN EARTH SCIENCES
ISSN	1367-9120
EISSN	1878-5786
出版年	2020
卷号	201
英文摘要	Mahd Adh Dhahab polymetallic Au-telluride mine in Kingdom of Saudi Arabia is a world-class deposit. The mineralization is hosted by subalkaline bimodal rhyolite-basalt arc succession part of the late Proterozoic Mahd group. The mineralized quartz veins mostly occupy fractures that formed in response to local folding of the Mahd volcanic-sedimentary sequence. The ore predominantly consists of massive sulfides (sphalerite, chalcopyrite, pyrite, and galena) and a diverse range of Au-(Ag)-tellurides (sylvanite, petzite, hessite, tetradymite, tellurobismuthite and altaite). Gangue mineral assemblage comprises chlorite, epidote, sassurite and quartz. Tellurides occur as subhedral grains dispersed within chalcopyrite, sphalerite and Fe-rich chlorite. Geological, structural and mineralogical observations support a model invoking a multi-stage process of mixed magmatic-meteoric fluids and boiling as a cause of telluride precipitation. The metal-bearing magmatic fluid was exsolved from a crystallizing arc alkaline melt produced by partial melting of a subducted slab containing ocean floor sediments. Precipitation from solution occurs as a result of the condensation of Te-rich vapor phase and mixing of auriferous fluids with cooled oxygenated meteoric water at a shallow depth.
英文关键词	Mahd Adh Dhahab Au-(Ag)-tellurides Tellurium Epithermal Arabian Shield
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000568796600016
WOS关键词	EASTERN DESERT ; GOLD DEPOSIT ; TELLURIDE MINERALOGY ; PHASE-RELATIONS ; STABLE-ISOTOPE ; MINERALIZATION ; SILVER ; MOUNTAINS ; SULFIDES ; DISTRICT
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326229
作者单位	[El-shafei, Shaimaa A.] Zagazig Univ, Dept Geol, Fac Sci, Zagazig 44519, Egypt; [Abdel-Maksoud, Kholoud M.] Cairo Univ, Inst African Res & Studies, Dept Geol, Giza, Egypt; [Helmy, Hassan M.] Menia Univ, Dept Geol, Fac Sci, Al Minya 61519, Egypt; [Ahmed, Ahmed H.] King Abdulaziz Univ, Fac Earth Sci, Jeddah, Saudi Arabia; [Ahmed, Ahmed H.] Helwan Univ, Dept Geol, Fac Sci, Cairo, Egypt
推荐引用方式 GB/T 7714	El-shafei, Shaimaa A.,Abdel-Maksoud, Kholoud M.,Helmy, Hassan M.,et al. Geology, mineralogy and genesis of the world-class Mahd Adh Dhahab epithermal Au-(Ag)-telluride deposit, Kingdom of Saudi Arabia[J],2020,201.
APA	El-shafei, Shaimaa A.,Abdel-Maksoud, Kholoud M.,Helmy, Hassan M.,&Ahmed, Ahmed H..(2020).Geology, mineralogy and genesis of the world-class Mahd Adh Dhahab epithermal Au-(Ag)-telluride deposit, Kingdom of Saudi Arabia.JOURNAL OF ASIAN EARTH SCIENCES,201.
MLA	El-shafei, Shaimaa A.,et al."Geology, mineralogy and genesis of the world-class Mahd Adh Dhahab epithermal Au-(Ag)-telluride deposit, Kingdom of Saudi Arabia".JOURNAL OF ASIAN EARTH SCIENCES 201(2020).