Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/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
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ISSN | 1866-7511 |
EISSN | 1866-7538 |
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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