Microanalytical investigations of gold-bearing rocks from the An Najadi region in Saudi Arabia

N. I. Khandaker; M. Ahmed; M. M. Hariri; M. M. Al-Ohali; M. A. Garwan; K. R. Khan

doi:10.1016/S0168-583X(97)00251-6

Microanalytical investigations of gold-bearing rocks from the An Najadi region in Saudi Arabia

N. I. Khandaker^*, M. Ahmed, M. M. Hariri, M. M. Al-Ohali, M. A. Garwan, K. R. Khan

^*Corresponding author for this work

King Fahd University of Petroleum & Minerals

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

The Proton Induced X-ray Emission technique with a scanning microbeam (micro-PIXE) and Scanning Electron Microscopy (SEM) were employed to study gold-bearing rocks from the An Najadi and adjacent regions situated within the exposed northeastern part of the Arabian Shield. These microanalytical investigations, together with routine petrological and ore microscopic studies, demonstrated the presence of important partitioning of major minerals and trace elements in several samples. These measurements also revealed microstructural features including brecciation within quartz grains and metal concentrations within these fracture-controlled micro-conduits. Results showed promise in terms of using distinctive geochemical signatures for ore body recognition. Of particular interest to this study is the presence of an identifiable geochemical trend pertaining to As, Ti, Zn, Cu, Fe and Au. Overall geochemical and petrological data indicate an epithermal mineralization phenomenon for the metal deposits in the An Najadi regions. Mineralization not only postdated brecciation but also followed the regional structural grain of this area.

Original language	English
Pages (from-to)	654-659
Number of pages	6
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	130
Issue number	1-4
DOIs	https://doi.org/10.1016/S0168-583X(97)00251-6
State	Published - Jul 1997

Bibliographical note

Funding Information:
The authors acknowledge the support of the Re-searchI nstitute of King Fahd University of Petroleum & Minerals for this work. Thanks are due to the personnel in the Earth Sciences Departmentf or assistance in sample prep~ation and S. Madhusoodhanan Pillai, Tandetron Accelerator Operator for technical assistance.S incere appreciationsa re due to the man- agement of the Sukhaybarat Gold Mine, especially Sameh Jalal, Kurt Christensen, Juhani Nylander, and J.S. Portacio, Jr. for their cooperation.

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

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10.1016/S0168-583X(97)00251-6

Cite this

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title = "Microanalytical investigations of gold-bearing rocks from the An Najadi region in Saudi Arabia",

abstract = "The Proton Induced X-ray Emission technique with a scanning microbeam (micro-PIXE) and Scanning Electron Microscopy (SEM) were employed to study gold-bearing rocks from the An Najadi and adjacent regions situated within the exposed northeastern part of the Arabian Shield. These microanalytical investigations, together with routine petrological and ore microscopic studies, demonstrated the presence of important partitioning of major minerals and trace elements in several samples. These measurements also revealed microstructural features including brecciation within quartz grains and metal concentrations within these fracture-controlled micro-conduits. Results showed promise in terms of using distinctive geochemical signatures for ore body recognition. Of particular interest to this study is the presence of an identifiable geochemical trend pertaining to As, Ti, Zn, Cu, Fe and Au. Overall geochemical and petrological data indicate an epithermal mineralization phenomenon for the metal deposits in the An Najadi regions. Mineralization not only postdated brecciation but also followed the regional structural grain of this area.",

author = "Khandaker, {N. I.} and M. Ahmed and Hariri, {M. M.} and Al-Ohali, {M. M.} and Garwan, {M. A.} and Khan, {K. R.}",

note = "Funding Information: The authors acknowledge the support of the Re-searchI nstitute of King Fahd University of Petroleum & Minerals for this work. Thanks are due to the personnel in the Earth Sciences Departmentf or assistance in sample prep~ation and S. Madhusoodhanan Pillai, Tandetron Accelerator Operator for technical assistance.S incere appreciationsa re due to the man- agement of the Sukhaybarat Gold Mine, especially Sameh Jalal, Kurt Christensen, Juhani Nylander, and J.S. Portacio, Jr. for their cooperation.",

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AU - Al-Ohali, M. M.

AU - Garwan, M. A.

AU - Khan, K. R.

N1 - Funding Information: The authors acknowledge the support of the Re-searchI nstitute of King Fahd University of Petroleum & Minerals for this work. Thanks are due to the personnel in the Earth Sciences Departmentf or assistance in sample prep~ation and S. Madhusoodhanan Pillai, Tandetron Accelerator Operator for technical assistance.S incere appreciationsa re due to the man- agement of the Sukhaybarat Gold Mine, especially Sameh Jalal, Kurt Christensen, Juhani Nylander, and J.S. Portacio, Jr. for their cooperation.

PY - 1997/7

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N2 - The Proton Induced X-ray Emission technique with a scanning microbeam (micro-PIXE) and Scanning Electron Microscopy (SEM) were employed to study gold-bearing rocks from the An Najadi and adjacent regions situated within the exposed northeastern part of the Arabian Shield. These microanalytical investigations, together with routine petrological and ore microscopic studies, demonstrated the presence of important partitioning of major minerals and trace elements in several samples. These measurements also revealed microstructural features including brecciation within quartz grains and metal concentrations within these fracture-controlled micro-conduits. Results showed promise in terms of using distinctive geochemical signatures for ore body recognition. Of particular interest to this study is the presence of an identifiable geochemical trend pertaining to As, Ti, Zn, Cu, Fe and Au. Overall geochemical and petrological data indicate an epithermal mineralization phenomenon for the metal deposits in the An Najadi regions. Mineralization not only postdated brecciation but also followed the regional structural grain of this area.

AB - The Proton Induced X-ray Emission technique with a scanning microbeam (micro-PIXE) and Scanning Electron Microscopy (SEM) were employed to study gold-bearing rocks from the An Najadi and adjacent regions situated within the exposed northeastern part of the Arabian Shield. These microanalytical investigations, together with routine petrological and ore microscopic studies, demonstrated the presence of important partitioning of major minerals and trace elements in several samples. These measurements also revealed microstructural features including brecciation within quartz grains and metal concentrations within these fracture-controlled micro-conduits. Results showed promise in terms of using distinctive geochemical signatures for ore body recognition. Of particular interest to this study is the presence of an identifiable geochemical trend pertaining to As, Ti, Zn, Cu, Fe and Au. Overall geochemical and petrological data indicate an epithermal mineralization phenomenon for the metal deposits in the An Najadi regions. Mineralization not only postdated brecciation but also followed the regional structural grain of this area.

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Microanalytical investigations of gold-bearing rocks from the An Najadi region in Saudi Arabia

Abstract

Bibliographical note

ASJC Scopus subject areas

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