 | Fuchs, Sebastian, Williams-Jones, Anthony E., Jackson, Simon E., Przybylowicz, Wojciech J. (2016) Metal distribution in pyrobitumen of the Carbon Leader Reef, Witwatersrand Supergroup, South Africa: Evidence for liquid hydrocarbon ore fluids. Chemical Geology, 426. 45-59 doi:10.1016/j.chemgeo.2016.02.001 | Journal (article/letter/editorial) | | distribution in pyrobitumen of the Carbon Leader Reef, Witwatersrand Supergroup, South Africa: Evidence for...distribution in pyrobitumen of the Carbon Leader Reef, Witwatersrand Supergroup, South Africa: Evidence for...Distribution in Pyrobitumen of the Carbon Leader Reef, Witwatersrand PT Supergroup, South Africa: Evidence...Foundation, P.O. Box 722, Somerset West 7129, South Africa 4 ED AGH University of Science and Technology...+49-177-234-1904 (GER) Keywords: LA-ICP-MS, pyrobitumen, oil migration, gold, uranium, Witwatersrand |  | Fuchs, Sebastian H.J., Schumann, Dirk, Williams-Jones, Anthony E., Murray, Andrew J., Couillard, Martin, Lagarec, Ken, Phaneuf, Michael W., Vali, Hojatollah (2017) Gold and uranium concentration by interaction of immiscible fluids (hydrothermal and hydrocarbon) in the Carbon Leader Reef, Witwatersrand Supergroup, South Africa. Precambrian Research, 293. 39-55 doi:10.1016/j.precamres.2017.03.007 | Journal (article/letter/editorial) | | and hydrocarbon) in the Carbon Leader Reef, Witwatersrand Supergroup, South Africa Sebastian H.J. Fuchs...and hydrocarbon) in the Carbon Leader Reef, Witwatersrand Supergroup, South Africa, Precambrian Research...and hydrocarbon) in the Carbon Leader Reef, Witwatersrand Supergroup, South Africa Author names: Sebastian...and transmission-electron microscopy of pyrobitumen-hosted uraninite reveal that uraninite grains...that were converted to pyrobitumen during burial and metamorphism. The pyrobitumen in the pores of the gold |  | Fuchs, S., Schumann, D., Williams-Jones, A.E., Vali, H. (2015) The growth and concentration of uranium and titanium minerals in hydrocarbons of the Carbon Leader Reef, Witwatersrand Supergroup, South Africa. Chemical Geology, 393. 55-66 doi:10.1016/j.chemgeo.2014.11.018 | Journal (article/letter/editorial) | | in hydrocarbons of the Carbon Leader Reef, Witwatersrand Supergroup, South Africa S. Fuchs a,â, D. Schumann...gold-bearing pyrobitumen from the Carbon Leader Reef in the Witwatersrand Basin, South Africa, was investigated...of uraninite and anatase nanocrystals in the pyrobitumen, implying mobilization and concentration of uranium...distributed and locally isolated within the pyrobitumen matrix. Crystallization of uraninite and anatase...abundant uraninite and anatase nanoparticles in pyrobitumen, a new model is proposed for the transport and |  | DepinĂ©, M., Frimmel, H. E., Emsbo, P., Koenig, A. E., Kern, M. (2013) Trace element distribution in uraninite from Mesoarchaean Witwatersrand conglomerates (South Africa) supports placer model and magmatogenic source. Mineralium Deposita, 48 (4) 423-435 doi:10.1007/s00126-013-0458-3 | Journal (article/letter/editorial) | | from Mesoarchaean Witwatersrand conglomerates (South Africa) supports placer model and magmatogenic source...conglomerates of the Mesoarchaean Central Rand Group in South Africaâs Witwatersrand Basin by in situ laser ablation-inductively...University of Cape Town, Rondebosch, Cape Town 7701, South Africa e-mail: hartwig.frimmel@uni-wuerzburg.de P....Mesoarchaean Witwatersrand Supergroup (Fig. 1) in South Africa hosts both the worldâs largest known concentration...many places intimately associated with pyrobitumen. Pyrobitumen is a conspicuous component of several |  | | Journal (article/letter/editorial) | | photosynthesizers at around 3.0 Ga, the first âwhiffsâ of free oxygen produced by photosynthesis under an overall...gold is still preserved in thin kerogen layers ("carbon seams") that typically developed on erosional ...University of Cape Town, Rondebosch, Cape Town 7701, South Africa e-mail: hartwig.frimmel@uni-wuerzburg.de Q....compared with average continental crust, average South African peridotite xenolith and Allende meteorite...more or less abundant stratiform kerogen layers (carbon seams) that represent former microbial mats (Hallbauer |  | Mossman, D.J., Minter, W.E.L., Dutkiewicz, A., Hallbauer, D.K., George, S.C., Hennigh, Q., Reimer, T.O., Horscroft, F.D. (2008) The indigenous origin of Witwatersrand âcarbonâ. Precambrian Research, 164 (3) 173-186 doi:10.1016/j.precamres.2008.04.008 | Journal (article/letter/editorial) | | com/locate/precamres The indigenous origin of Witwatersrand âcarbonâ D.J. Mossman a,â , W.E.L. Minter b , A. Dutkiewicz...Rondebosch 7700, South Africa c School of Geosciences, University of Sydney, Sydney, New South Wales 2006,...Planetary Sciences, Macquarie University, Sydney, New South Wales 2109, Australia f Evolving Gold Corporation...Accepted 29 April 2008 Keywords: Witwatersrand Carbon Indigenous Spatial distribution Kerogen Bitumen...is intimately associated with so-called âcarbonâ in âcarbon seam reefsâ, which occur in over a dozen |  | | Journal (article/letter/editorial) | | Sciences, University of Cape Town, Rondebosch 7701, South Africa c GeoZentrum Nordbayern, University of Erlangen-NĂŒrnberg...uraninite in the Mesoarchean Witwatersrand Basin (South Africa), as well as for forensic purposes to track...the low solubility of Th4+, the only oxidation state of this element. Consequently, high-temperature...Archaean Dominion Group of the Kaapvaal Craton of South Africa (Rantzsch et al., 2011). Thus Th content in...occur in the Mesoarchaean Witwatersrand Basin in South Africa. We extended therefore our study to include |  | MolnĂĄr, Ferenc, OâBrien, Hugh, Stein, Holly, Cook, Nick (2017) Geochronology of Hydrothermal Processes Leading to the Formation of the AuâU Mineralization at the Rompas Prospect, PerĂ€pohja Belt, Northern Finland: Application of Paired UâPb Dating of Uraninite and ReâOs Dating of Molybdenite to the Identification of Multiple Hydrothermal Events in a Metamorphic Terrane. Minerals, 7 (9) 171 doi:10.3390/min7090171 | Journal (article/letter/editorial) | | Finland; hugh.obrien@gtk.fi AIRIE Program, Colorado State University, Fort Collins, CO 80523-1482, USA; Holly...hydrocarbon-bearing fluid flow which produced pyrobitumen crusts around grains of uraninite. Gold precipitated...stromatolitic carbonates preserving the JatuliâLomagundi carbon isotope âexcursionâ [20]. These rocks are intercalated...Norrbotten and other Svecofennian microcontinents to the south with the Karelian domain and also the final collision...from middle to upper greenschist facies in the south to amphibolite facies in the north (Figure 1). Occurrences |  | | Journal (article/letter/editorial) | | Palaeoproterozoic marine shales of the Kaapvaal Craton, South Africa Glen T. Nwaila 1,2 & Hartwig E. Frimmel 2...Witwatersrand, Private Bag 3, Johannesburg 2050, South Africa 2 Bavarian Georesources Centre (BGC), Institute...Sciences, University of Cape Town, Rondebosch 7700, South Africa and PGE content in modern seawater are extremely...studied marine shales with low sulphide and organic carbon contents. Published gold values in settings other...rocks such as the Witwatersrand conglomerates and carbon seams. Previous data on Archaean shales suggest |  | HavelcovĂĄ, Martina, SĂœkorovĂĄ, Ivana, RenĂ©, MiloĆĄ, Mizera, JiĆĂ, Coubal, Miroslav, MachoviÄ, VladimĂr, Strunga, VladimĂr, GoliĂĄĆĄ, Viktor (2022) Geology and Petrography of Uraniferous Bitumens in Permo-Carboniferous Sediments (VrchlabĂ, Czech Republic) Minerals, 12 (5) 544 doi:10.3390/min12050544 | Journal (article/letter/editorial) | | Minerals 2022, 12, 544 2 of 20 uraniferous pyrobitumen, or anthraxolite have been used to describe the...structure, named by ChaloupskĂœ [29]ChaloupskĂœ as the South KrkonoĆĄe Tectonic northern part is limited by a...a tectonic structure, named by [29] as the South Zone (Figure 1). Zone (Figure 1). KrkonoĆĄe Tectonic wellaccessible...structure of the South KrkonoĆĄe Tectonic Zonewas wasalso VrchlabĂ road cut, structure of the South KrkonoĆĄe Tectonic...FOR PEER REVIEW 4 of 19 the dip growing to the south from approximately 16⊠in the southern part of the |  | Shapi, Michael, Jordaan, Maryam Amra, Mbambo, Andile Truelove, Davies, Theophilus Clavell, Chirenje, Emmanuel, Dube, Mpumelelo (2021) Determination of Potentially Harmful Element (PHE) Distribution in Water Bodies in Krugersdorp, a Mining City in the West Rand, Gauteng Province, South Africa. Minerals, 11 (10) 1133 doi:10.3390/min11101133 | Journal (article/letter/editorial) | | Mining City in the West Rand, Gauteng Province, South Africa Michael Shapi 1 , Maryam Amra Jordaan 1, *,...Mining City in the West Rand, Gauteng Province, South Africa. Minerals 2021, 11, 1133. https://doi.org/10...Technology, 511 Mangosuthu Highway, Durban 4031, South Africa; MShapi@mut.ac.za (M.S.); mbamboa@webmail.co...C.D.) Council for Geoscience, Tshwane 0184, South Africa; echirenje@geoscience.org.za (E.C.); mdube@geoscience...+27-86-616-3453 Abstract: The town of Krugersdorp in South Africa is the locus of an important wildlife game reserve |  | Qiu, Lin-Fei, Wu, Yu, Wang, Qiong, Wu, Lin-Feng, He, Zhong-Bo, Peng, Song, Fan, Yun-Fei (2022) Metallogenic Mechanism of Typical Carbonate-Hosted Uranium Deposits in Guizhou (China) Minerals, 12 (5) 585 doi:10.3390/min12050585 | Journal (article/letter/editorial) | | âYangtze Continent Blockâ of the âQiangtangâYangtzeâSouth China Plateâ, Minerals 2022, XX, x Minerals 2022..."Yangtze Continent Block" of the "QiangtangâYangtzeâSouth China Plate", which is divided by the tectonic regional...discussed in detail. The Dayutang U deposit is in the south of Fenggang County, Zunyi City, Guizhou Province...mainly controlled by the trending of near northâsouth faults (The strike is 10⊠â15⊠) (Figure 2a,b)....experiment and GC-MS analysis were carried out in the State Key Laboratory of Oil and Gas Reservoir Geology |  | Crede, Lars S., Evans, Katy A., Rempel, Kirsten U., Grice, Kliti, Sugiyama, Ichiko (2019) Gold partitioning between 1-dodecanethiol and brine at elevated temperatures: Implications of Au transport in hydrocarbons for oil-brine ore systems. Chemical Geology, 504. 28-37 doi:10.1016/j.chemgeo.2018.11.011 | Journal (article/letter/editorial) | | was proposed for the Witwatersrand Basin in South Africa in the form of mobile liquid hydrocarbons that...M2+ refers to any divalent metal ion, and R is any free radical species (e.g., unbonded H+ or hydrocarbon...X-ray absorption spectroscopy (XAS) within a glassy carbon cell up to 250 °C (Crede et al., 2017; Crede et...in hydrocarbons of the Carbon Leader Reef, Witwatersrand Supergroup, South Africa. Chem. Geol. 393-394...distribution in pyrobitumen of the Carbon Leader Reef, Witwatersrand Supergroup, South Africa: evidence for |  | | Journal (article/letter/editorial) | | AIRIE Program, Dept. of Geosciences, Colorado State University, Fort Collins, CO, USA 2 Dept. of Earth...Australia (Murphy, 1990) and hosted in Devonian reef carbonates of the Lennard Shelf 4 (Druce and...Bluffs Extension (340-354 Ma) (Shaw et al., 1994). Reef development was contemporaneous with the evolution...to 4.6 wt.% total organic carbon (TOC) and yield 0.3-20.3 mg/g combined free oil and kerogen (DâErcole...indicate a potential combined yield of 4.9-208.2 mg/g free oil and kerogen determined by Rock-Eval pyrolysis |  | Crede, Lars-S., Evans, Katy A., Rempel, Kirsten U., Brugger, JoĂ«l, Etschmann, Barbara, Bourdet, Julien, Reith, Frank (2020) Revisiting hydrocarbon phase mobilization of Au in the AuâHg McLaughlin Mine, Geysers/Clear Lake area, California. Ore Geology Reviews, 117. 103218 doi:10.1016/j.oregeorev.2019.103218 | Journal (article/letter/editorial) | | Kensington WA 6151, Australia 8 dThe 9 Adelaide, South Australia 5005, Australia of Applied Geology, Curtin...Mitigation and Technologies, PMB2, Glen Osmond, South 1 20 Keywords 21 Gold; organic; McLaughlin;...fluorescence 33 microscopy of microscopic silica-free carbonaceous material reveals that the CM contains...of organic carbon-rich material) or hydrocarbons (HC; natural 45 material rich in carbon and hydrogen...AuâU deposits 54 (Witwatersrand Supergroup, South Africa; Fuchs et al., 2015; 2016); Pb-Zn-(Ba) deposits |  | | Journal (article/letter/editorial) | | nitric acid and hydrogen peroxide to generate carbon free solutions prior to ICP-MS analysis. This procedure... AC CE Figure 1: 2D structure of n-dodecane. Carbon atoms between the two methyl groups are represented...ml screw top titanium autoclaves to produce carbon-free, homogeneous aqueous solutions suitable for ICP-MS...prevents the detection of compounds with a smaller carbon number than n-hexane, compounds with concentrations...reduction by the X-ray beam and the use of a glassy carbon tube to contain samples, facilitated precipitation |  | Gaboury, Damien, Genna, Dominique, Trottier, Jacques, Bouchard, Maxime, Augustin, JĂ©rĂŽme, Malcolm, Kelly (2021) The Perron Gold Deposit, Archean Abitibi Belt, Canada: Exceptionally High-Grade Mineralization Related to Higher Gold-Carrying Capacity of Hydrocarbon-Rich Fluids. Minerals, 11 (10) 1066 doi:10.3390/min11101066 | Journal (article/letter/editorial) | | but are brecciated at the top, consistent with a south-facing dome interpretation. Rhyolite colors vary...butweak are brecciated at the top, consistent a south-facing dome interpretation. Rhyolite EâW dipping...(A) visible free in gold gold)Source in drillAMEX hole PE-20-192. Inc. (B) Brown visible free Examples gold...porphyroblastic amphiboles in mafic rocks were analyzed in carbon-coated thin sections using a Cameca SX-100 microprobe...orogenic gold deposits are dominated by water with carbon dioxide (e.g., [25â31]). Implications of such particular |  | | Journal (article/letter/editorial) | | Sciences, University of Cape Town, Rondebosch 7701, South Africa 10 11 Abstract 12 We describe the presence...Paleoproterozoic basins. 61 The Witwatersrand Basin in South Africa, similarly sized to the Huronian Basin, is known...Paleoplacer Deposits 140 The Witwatersrand Basin in South Africa is the worldâs largest known gold province,...occasionally, for 170 example in the case of the Carbon Leader Reef, as lag surfaces ranging from decimeters...deposition in shallow braided streams flowing 238 south on a south-dipping paleoslope (Fralick and Miall, 1989) |  | Crede, Lars-S., Liu, Weihua, Evans, Katy A., Rempel, Kirsten U., Testemale, Denis, Brugger, JoĂ«l (2019) Crude oils as ore fluids: An experimental in-situ XAS study of gold partitioning between brine and organic fluid from 25 to 250âŻÂ°C. Geochimica et Cosmochimica Acta, 244. 352-365 doi:10.1016/j.gca.2018.10.007 | Journal (article/letter/editorial) | | transport of gold (Au) in model oil compounds (S-free n-dodecane, CH3(CH2)10CH3, DD; and S-bearing 1-dodecanethiol...equilibration kinetics in the beaker and glassy carbon tube. Since sulfur and organothiol compounds are...in Nevada, USA (Emsbo and Koenig, 2007) and in South China (Zhuang et al., 1999; Sun et al., 2009; Gu...1dodecanethiol (98%) directly into either a glassy carbon cell for XAS measurement, or into a beaker, from...were sampled and measured separately in glassy carbon tubes, that were open at the top. XAS standards |  | | Book | | BELARUS BELGIUM BELIZE BENIN BOLIVIA, PLURINATIONAL STATE OF BOSNIA AND HERZEGOVINA BOTSWANA BRAZIL BRUNEI...SEYCHELLES SIERRA LEONE SINGAPORE SLOVAKIA SLOVENIA SOUTH AFRICA SPAIN SRI LANKA SUDAN SWEDEN SWITZERLAND SYRIAN...Greenland; Poços de Caldas, Brazil Phalabora, South Africa; CatalĂŁo, Brazil La Crouzille district, France;...Lignite-coal Carbonate Phosphate Black shale Examples South Texas, USA LodĂšve Basin, France; Franceville Basin...Elliot Lake district, Canada Witwatersrand Basin, South Africa Kamushanovskoye, Kyrgyzstan; Flodelle Creek |  | GuimarĂŁes, Frederico Sousa, de Freitas, Monica Elizetti, Rios, Francisco Javier, Pedrosa, TĂ©rcio Assunção (2019) Mineralogical characterization and origin of uranium mineralization in Witwatersrand-like metaconglomerate of the Moeda Formation, QuadrilĂĄtero FerrĂfero, Brazil. Ore Geology Reviews, 106. 423-445 doi:10.1016/j.oregeorev.2019.01.016 | Journal (article/letter/editorial) | | Nucleares Brasileiras (NUCLEBRAS), a Brazilian state-owned nuclear company, identified the Moeda metaconglomerate...the world-class Witwatersrand gold deposit, in South Africa, and the Blind River-Elliot Lake uranium deposit...Supegroup with those of the Transvaal Supergroup of South Africa, suggesting a correlation with respect to lithology...(see below, under sections 5.2.1 and 5.2.2), but free of such inclusions in the western limb. AntimonyâAsâS...secondary porosity and oxidation of U to the hexavalent state. All these factors contribute to low totals (Frimmel |  | Shi, Chunhua, Cao, Jian, Luo, Bing, Hu, Wenxuan, Tan, Xiucheng, Tian, Xingwang (2020) Major elements trace hydrocarbon sources in over-mature petroleum systems: Insights from the Sinian Sichuan Basin, China. Precambrian Research, 343. 105726pp. doi:10.1016/j.precamres.2020.105726 | Journal (article/letter/editorial) | | Wenxuan Hua, Xiucheng Tanc, Xingwang Tianb a State Key Laboratory for Mineral Deposits Research, School...Field Company, Chengdu, Sichuan 610051, China c State Key Laboratory of Oil and Gas Reservoir Geology...million amounts of major elements in addition to carbon (i.e., organic matter). Na and K in the bitumen...correlations between Ca or Mg and total organic carbon (TOC) content (Shi et al., 2018). There is no obvious...form of âinvisibleâ nano-minerals in an emulsiïŹed state. 5.3.2. Elements related to Fe porphyrins (Al, |  | Sindern, S., Havenith, V., Gerdes, A., Meyer, F. M., Adelmann, D., Hellmann, A. (2019) Dating of anatase-forming diagenetic reactions in Rotliegend sandstones of the North German Basin. International Journal of Earth Sciences, 108 (4) 1275-1292 doi:10.1007/s00531-019-01705-x | Journal (article/letter/editorial) | | permeability for migration or storage of hydrocarbons, carbon dioxide or water), but they also represent valuable...the preceding stages of the diagenetic evolution. Carbon species, like ÂCO2, ÂCO32â and H  CO3â, could...of anatase nanocrystals next to uraninite in pyrobitumen representing formerly mobile liquid hydrocarbons...rutile recrystallization to anatase. The authors state that such anatase domains keep a dominant part of...uplift known for the Pompeckj Block and the region south of the Groningen Highâto the east and west of the |  | | Report (issue) | | Great Oxidation Event (GOE). The availability of free oxygen would have had a strong effect on the (bio)geochemical...elements that exist in more than one oxidation state in nature. Of the major rock-forming elements, only...elements in ore deposits respond to the oxygen-carbon-sulfur geochemistry of the atmosphere and oceans...iron-sulfides. Next, Grassineau et al. use sulfur and carbon isotope geochemistry of Archean v Downloaded...famous Mesoarchean Witwatersrand Supergroup in South Africa that contains Earthâs largest gold-uranium deposits |  | | Book | | Archaean Geology of the Kaapvaal Craton, Southern Africa Regional Geology Reviews Series editors Roland... Nelson Mandela University, Port Elizabeth, South Africa François M. Roure, Rueil-Malmaison, France ... Each book aims to provide the reader with the state-of-the-art understanding of a regions geology with...Archaean Geology of the Kaapvaal Craton, Southern Africa 123 Editors Alfred Kröner Institut fĂŒr Geowissenschaften...Geology University of Johannesburg Auckland Park, South Africa ISSN 2364-6438 ISSN 2364-6446 (electronic) |
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