Arid
DOI10.1007/s12517-012-0727-y
Geochemistry and mineral chemistry of lode gold mineralisation, SE Egypt: implications for ore genesis and exploration
Zoheir, Basem A.1; Abdel-Fattah, Mohamed G.2; ElAlfy, Sameh M.2
通讯作者Zoheir, Basem A.
来源期刊ARABIAN JOURNAL OF GEOSCIENCES
ISSN1866-7511
EISSN1866-7538
出版年2013
卷号6期号:12页码:4635-4646
英文摘要

Orogenic, lode gold mineralisation in the South Eastern Desert of Egypt is related to quartz veins spatially and temporally associated with conjugate NW- and NE-trending brittle-ductile shear zones. These structures are assumed to be linked to a regional transpression deformation which occurred late in the tectonic evolution of the area. In the Betam deposit, gold is confined to quartz(+/- carbonate) veins cutting through tectonised metagabbro and metasedimentary rocks in the vicinity of small granite intrusions. The ore bodies contain ubiquitous pyrite and arsenopyrite, in addition to minor disseminated chalcopyrite, pyrrhotite, galena, tetrahedrite and rare gold/electrum. New ore microscopy and electron microprobe studies indicate that most free-milling Au is intimately associated with the late-paragenetic galena-tetrahedrite-chalcopyrite assemblage. An early Fe-As sulphide assemblage, however, shows minor traces of refractory gold. New mineralogical and geochemical data are used to better constrain on possible element dispersions for exploration uses. This study indicates that parameters that most consistently define primary dispersion of gold in the mine area include pervasive silicification, sericite and carbonate alteration. The trace element data of gold lodes reflect a systematic dispersion of gold and certain base metals. Low-cost, extensive exploration programs may use elevated concentrations of Ag, Sb, Cu and Pb as tracers for Au ore zones in the Betam mine area and surroundings.


英文关键词Lode gold Geochemistry Electron microprobe Element dispersion Betam deposit Egypt
类型Article
语种英语
国家Egypt
收录类别SCI-E
WOS记录号WOS:000326454300007
WOS关键词SOUTH-EASTERN DESERT ; WESTERN-AUSTRALIA ; YILGARN CRATON ; DEPOSIT ; TEMPERATURE ; EVOLUTION ; GOLDFIELDS ; GRADIENTS ; GEOLOGY ; QUARTZ
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/2XILL650/175874
作者单位1.Benha Univ, Fac Sci, Dept Geol, Banha 13518, Egypt;
2.Nucl Mat Author Egypt, Cairo, Egypt
推荐引用方式
GB/T 7714
Zoheir, Basem A.,Abdel-Fattah, Mohamed G.,ElAlfy, Sameh M.. Geochemistry and mineral chemistry of lode gold mineralisation, SE Egypt: implications for ore genesis and exploration[J],2013,6(12):4635-4646.
APA Zoheir, Basem A.,Abdel-Fattah, Mohamed G.,&ElAlfy, Sameh M..(2013).Geochemistry and mineral chemistry of lode gold mineralisation, SE Egypt: implications for ore genesis and exploration.ARABIAN JOURNAL OF GEOSCIENCES,6(12),4635-4646.
MLA Zoheir, Basem A.,et al."Geochemistry and mineral chemistry of lode gold mineralisation, SE Egypt: implications for ore genesis and exploration".ARABIAN JOURNAL OF GEOSCIENCES 6.12(2013):4635-4646.
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