The behavior of gold during listvenitization: Experimental and theoretical simulation

Likhoidov, G. G.; Plyusnina, L. P.; Shcheka, Zh. A.

doi:10.1134/s1028334x07050145

Cited by 19 publications

(9 citation statements)

References 2 publications

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“…Colvine et al, 1984;Stern and Gwinn, 1990;Boskabadi et al, 2017;Hamdy and Gamal El Dien, 2017), 2meteoric and metamorphic hydrothermal fluids penetrating along tectonic fractures during or even after exhumation to upper crustal levels (e.g. Buisson and Leblanc, 1987;Auclair et al, 1993;Likhoidov et al, 2007;Hamdy and Lebda, 2007), and (3) mixing of these two sources (Gahlan et al, 2018). We do not have stable isotope data on the Jabal Ess suite at this time, but we note that such data remain subject to a variety of interpretations and may not be sufficient to settle the issue of fluid sources.…”

Section: Petrogenesis Of the Listvenitesmentioning

confidence: 99%

Petrogenesis of gold-bearing listvenites from the carbonatized mantle section of the Neoproterozoic Ess ophiolite, Western Arabian Shield, Saudi Arabia

Gahlan

Azer

Asimow

et al. 2020

Lithos

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Section: Petrogenesis Of the Listvenitesmentioning

confidence: 99%

Petrogenesis of gold-bearing listvenites from the carbonatized mantle section of the Neoproterozoic Ess ophiolite, Western Arabian Shield, Saudi Arabia

Gahlan

Azer

Asimow

et al. 2020

Lithos

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“…Terrane boundaries are major tectonic discontinuities that often display a complex and polyphase structural evolution, and a variety of ore mineralizations were reported in these boundaries [2,3]. Listvenite, a carbonate-silica-dominated rock that forms as a result of CO 2 -and K-metasomatism of ultramafic/mafic rocks, represents a key indicator for the occurrence of ore mineralizations along shear zones or major tectonic boundaries [20][21][22][23][138][139][140]. The ability to map hydrothermal alteration mineral and listvenites using spectral bands of ASTER satellite remote sensing data has been successfully established in many parts of the world [6][7][8][9][10][11][12][27][28][29]31,43].…”

Section: Discussionmentioning

confidence: 99%

Mapping Listvenite Occurrences in the Damage Zones of Northern Victoria Land, Antarctica Using ASTER Satellite Remote Sensing Data

et al. 2019

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Listvenites normally form during hydrothermal/metasomatic alteration of mafic and ultramafic rocks and represent a key indicator for the occurrence of ore mineralizations in orogenic systems. Hydrothermal/metasomatic alteration mineral assemblages are one of the significant indicators for ore mineralizations in the damage zones of major tectonic boundaries, which can be detected using multispectral satellite remote sensing data. In this research, Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) multispectral remote sensing data were used to detect listvenite occurrences and alteration mineral assemblages in the poorly exposed damage zones of the boundaries between the Wilson, Bowers and Robertson Bay terranes in Northern Victoria Land (NVL), Antarctica. Spectral information for detecting alteration mineral assemblages and listvenites were extracted at pixel and sub-pixel levels using the Principal Component Analysis (PCA)/Independent Component Analysis (ICA) fusion technique, Linear Spectral Unmixing (LSU) and Constrained Energy Minimization (CEM) algorithms. Mineralogical assemblages containing Fe2+, Fe3+, Fe-OH, Al-OH, Mg-OH and CO3 spectral absorption features were detected in the damage zones of the study area by implementing PCA/ICA fusion to visible and near infrared (VNIR) and shortwave infrared (SWIR) bands of ASTER. Silicate lithological groups were mapped and discriminated using PCA/ICA fusion to thermal infrared (TIR) bands of ASTER. Fraction images of prospective alteration minerals, including goethite, hematite, jarosite, biotite, kaolinite, muscovite, antigorite, serpentine, talc, actinolite, chlorite, epidote, calcite, dolomite and siderite and possible zones encompassing listvenite occurrences were produced using LSU and CEM algorithms to ASTER VNIR+SWIR spectral bands. Several potential zones for listvenite occurrences were identified, typically in association with mafic metavolcanic rocks (Glasgow Volcanics) in the Bowers Mountains. Comparison of the remote sensing results with geological investigations in the study area demonstrate invaluable implications of the remote sensing approach for mapping poorly exposed lithological units, detecting possible zones of listvenite occurrences and discriminating subpixel abundance of alteration mineral assemblages in the damage zones of the Wilson-Bowers and Bowers-Robertson Bay terrane boundaries and in intra-Bowers and Wilson terranes fault zones with high fluid flow. The satellite remote sensing approach developed in this research is explicitly pertinent to detecting key alteration mineral indicators for prospecting hydrothermal/metasomatic ore minerals in remote and inaccessible zones situated in other orogenic systems around the world.

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“…That is because gold solubility from bisulfide complexes changes very little with temperature (e.g., Hayashi and Ohmoto, 1991;Gilbert et al, 1998) and there is no clear evidence of P(lithostatic)T changes at the scale of Nyankanga deposit; the proximal alteration assemblage is the same throughout the deposit and of similar grade with the surrounding country rocks. The most effective way to precipitate gold is to decrease the activity of reduced sulphur (e.g., Seward, 1973;Likhoidov et al, 2007). This can be done by dilution, oxidation, boiling or by precipitation of sulphide minerals with Fe-rich wallrock.…”

Section: The Role Of Iron Rich Lithotypes In Gold Deposition (Chemicamentioning

confidence: 99%

The geology of the giant Nyankanga gold deposit, Geita Greenstone Belt, Tanzania

Sanislav

Kolling²,

Brayshaw³

et al. 2015

Ore Geology Reviews

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The behavior of gold during listvenitization: Experimental and theoretical simulation

Cited by 19 publications

References 2 publications

Petrogenesis of gold-bearing listvenites from the carbonatized mantle section of the Neoproterozoic Ess ophiolite, Western Arabian Shield, Saudi Arabia

Petrogenesis of gold-bearing listvenites from the carbonatized mantle section of the Neoproterozoic Ess ophiolite, Western Arabian Shield, Saudi Arabia

Mapping Listvenite Occurrences in the Damage Zones of Northern Victoria Land, Antarctica Using ASTER Satellite Remote Sensing Data

The geology of the giant Nyankanga gold deposit, Geita Greenstone Belt, Tanzania

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