干旱区生态环境知识资源中心(Arid): High resolution mapping of alteration zones in Daghbag and Bakriya gold occurrences (Central Eastern Desert, Egypt) using field, mineralogical-geochemical, and remote sensing data

Arid

DOI	10.1007/s12517-021-07490-9
	High resolution mapping of alteration zones in Daghbag and Bakriya gold occurrences (Central Eastern Desert, Egypt) using field, mineralogical-geochemical, and remote sensing data
	Hagag, Wael; Abdelnasser, Amr
通讯作者	Hagag, W (corresponding author), Benha Univ, Fac Sci, Geol Dept, Banha 13518, Egypt.
来源期刊	ARABIAN JOURNAL OF GEOSCIENCES
ISSN	1866-7511
EISSN	1866-7538
出版年	2021
卷号	14 期号:14
英文摘要	Daghbag and Bakriya gold occurrences are located at the western part of the central Eastern Desert of Egypt belonging to Barramiya gold district. This work presents comprehensive geological, structural, and new mineralogical data to define the different alteration types related to the gold mineralization at these occurrences. Moreover, in order to reduce the field and additional costs, ASTER and Landsat-8 OLI data are used at the initial exploration stages to elucidate the spread of alteration zones associated with the auriferous quartz veins at the Daghbag and Bakriya gold mines. Two alteration types are defined in the studied areas: type 1 (sericitic/muscovitization) and type 2 (propylitic). The Daghbag gold mineralization is mainly related to NW- milky, brownish, and smoky quartz veins and veinlets having pyrite, chalcopyrite goethite and malachite with gold. While Bakriya gold mineralization occurs within NNW-SSE and NW-SE quartz veins and alteration zones at the mining areas including pyrite and chalcopyrite, magnetite, hematite, malachite, and goethite with gold. Mass balance calculations and Gresens'isocon diagrams revealed that Au was added with Cu along mainly with K2O, Fe2O3, MgO, CaO to the sericitic and some propylitic with ferriginated altered wallrocks. Although alteration types do not show regular distribution pattern, several band combinations, and multiplications, developed selective principal component analysis and image transformations were developed for detecting the hydrothermal alteration zones associated with gold mineralization using ASTER and Landsat-8 OLI data. In which, the gold mineralization at the studied area is related to pervasive sericitic (+/- muscovite) alteration types with some propylitic and ferrugination at Bakriya mine areas.
英文关键词	Hydrothermal alteration Gold mineralization ASTER Landsat-8 OLI Daghbag Bakriya Central Eastern Desert (Egypt)
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000691614000007
WOS关键词	SPACEBORNE THERMAL EMISSION ; REFLECTION RADIOMETER ASTER ; HYDROTHERMALLY ALTERED ROCKS ; PRINCIPAL COMPONENT ANALYSIS ; IMAGERY DATA ; LANDSAT TM ; DEPOSITS ; AREA ; MINERALIZATION ; IDENTIFICATION
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/2XILL650/362545
作者单位	[Hagag, Wael; Abdelnasser, Amr] Benha Univ, Fac Sci, Geol Dept, Banha 13518, Egypt
推荐引用方式 GB/T 7714	Hagag, Wael,Abdelnasser, Amr. High resolution mapping of alteration zones in Daghbag and Bakriya gold occurrences (Central Eastern Desert, Egypt) using field, mineralogical-geochemical, and remote sensing data[J],2021,14(14).
APA	Hagag, Wael,&Abdelnasser, Amr.(2021).High resolution mapping of alteration zones in Daghbag and Bakriya gold occurrences (Central Eastern Desert, Egypt) using field, mineralogical-geochemical, and remote sensing data.ARABIAN JOURNAL OF GEOSCIENCES,14(14).
MLA	Hagag, Wael,et al."High resolution mapping of alteration zones in Daghbag and Bakriya gold occurrences (Central Eastern Desert, Egypt) using field, mineralogical-geochemical, and remote sensing data".ARABIAN JOURNAL OF GEOSCIENCES 14.14(2021).