 | Guy, B. M., Ono, S., Gutzmer, J., Lin, Y., Beukes, N. J. (2014) Sulfur sources of sedimentary “buckshot” pyrite in the Auriferous Conglomerates of the Mesoarchean Witwatersrand and Ventersdorp Supergroups, Kaapvaal Craton, South Africa. Mineralium Deposita, 49 (6) 751-775 doi:10.1007/s00126-014-0518-3 | Journal (article/letter/editorial) | | and Ventersdorp Supergroups, Kaapvaal Craton, South Africa B. M. Guy & S. Ono & J. Gutzmer & Y. Lin & N...and Ventersdorp supergroups, Kaapvaal Craton, South Africa. Detailed petrographic analyses of the reefs...grains from the Main, Vaal, Basal, Kalkoenkrans, Beatrix, and Ventersdorp Contact reefs were analyzed for...Johannesburg, Auckland Park, Johannesburg 2006, South Africa e-mail: bradley.guy@sgs.com J. Gutzmer Helmholtz-Institute...Services, SGS South Africa, 58 Melville Street, Booysens, Johannesburg 2091, South Africa Present Address: |  | Lippmann, J., Stute, M., Torgersen, T., Moser, D.P., Hall, J.A., Lin, L., Borcsik, M., Bellamy, R.E.S., Onstott, T.C. (2003) Dating ultra-deep mine waters with noble gases and 36Cl, Witwatersrand Basin, South Africa. Geochimica et Cosmochimica Acta, 67 (23) 4597-4619 doi:10.1016/s0016-7037(03)00414-9 | Journal (article/letter/editorial) | | 1016/S0016-7037(03)00414-9 Dating ultra-deep mine waters with noble gases and South Africa 36 Cl, Witwatersrand Basin...08544, USA 6 Geology Dept Beatrix Mine, P O Box 2823, Welkom, 9460 South Africa (Received May 15, 2002;...below the surface) in the Witwatersrand Basin, South Africa, were investigated to quantify the dynamics...research areas is the ultra deep gold mines in South Africa, the deepest continental sites on Earth that...lies within the Archaean Kaapvaal Craton of South Africa (Fig. 1a and b) and formed episodically between |  | | Journal (article/letter/editorial) | | Genmin, P.O. Box 61820, Marshalltown, 2107, South Africa (Received November 4, 1992; revised version...assemblage of pyrophyllite-chloritoidmuscovite-chlorite-quartz-tourmaline-rutile-pyrite is found in most gold...biotite, pyrrhotite and arsenopyrite have more local distribution. Pelites ("shales"), quartzites, meta-conglomerates...Fluids in equilibrium with pyrophyllite-muscovite-quartz-pyrite + paragonite are inferred during metamorphism...Dome, Johannesburg, and other important towns (Welkom, W; Klerksdorp, K; Carletonville, C; Randfontein |  | | Book | | J. H. L. Voncken Geology of Coal Deposits of South Limburg, The Netherlands Including Adjacent German...academic such as: • • • • • timely reports of state-of-the art analytical techniques bridges between... J. H. L. Voncken Geology of Coal Deposits of South Limburg, The Netherlands Including Adjacent German...relevant protective laws and regulations and therefore free for general use. The publisher, the authors and...firer/blaster in the Dutch coal mine Oranje Nassau Mine II. This mine was located in the village of Schaesberg |  | | Journal (article/letter/editorial) | | CHLORITE-RICH COMMUNICATIONS NODULES IN THE BEATRIX REEF, WITWATERSRAND G. NEIL PHILLIPS AND Guo-YI...Thisstudy examines the chlorite-rich nodules of the Beatrix reef The Witwatersrandreefs are characterizedby...greenstonebelts minerals,including chlorite, pyrophyllite, quartz, rutile, margarite,graphite(opticalidentiplusp...chlorite-richnodules,quartzcommonly the Beatrixreef at Welkom, for example,they are formstiny roundinclusions...the Fe-rich minerals of hematite, al- found at Beatrix. The chlorite-rich nodules are con- ture. Further |  | | Journal (article/letter/editorial) | | Private Bag 3, PO Wits 2050, Johannesburg, South Africa Present address: Rock Engineering Department...SRK Consulting, PO Box 55291, Northlands 2116, South Africa Wolf Uwe Reimold Impact Cratering Research... Private Bag 3, PO Wits 2050, Johannesburg, South Africa Corresponding author, Fax: +27 (11) 339 1697;...99775-7320, USA © 2003 Geological Society of South Africa ABSTRACT Tectonites from ~2.7-Ga-old Platberg...in H.J. Joel and Harmony gold mines (southern Free State Goldfield) were dated by the 40Ar-39Ar step-heating |  | Lippmann-Pipke, Johanna, Sherwood Lollar, Barbara, Niedermann, Samuel, Stroncik, Nicole A., Naumann, Rudolf, van Heerden, Esta, Onstott, Tullis C. (2011) Neon identifies two billion year old fluid component in Kaapvaal Craton. Chemical Geology, 283 (3) 287-296 doi:10.1016/j.chemgeo.2011.01.028 | Journal (article/letter/editorial) | | Biotechnology, University of the Free State, P.O. Box 339, Bloemfontein 9300, South Africa e Department of Geosciences...deep gold mines of the Witwatersrand Basin, South Africa have gained recent attention not only because...deep gold mines of the Witwatersrand Basin, South Africa, a suite of noble gas isotopes 3,4He, 20Ne,...of fluid inclusions in bulk rock (1b), and vein quartz (1c) from the Witwatersrand Basin were analysed...depth throughout of the Witwatersrand basin, South Africa. Noble gas concentrations and isotope ratios |  | Heard, Andrew W., Warr, Oliver, Borgonie, Gaetan, Linage, Borja, Kuloyo, Olukayode, Fellowes, Jonathan W., Magnabosco, Cara, Lau, Maggie C.Y., Erasmus, Mariana, Cason, Errol D., van Heerden, Esta, Kieft, Thomas L., Mabry, Jennifer C., Onstott, Tullis C., Sherwood Lollar, Barbara, Ballentine, Chris J. (2018) South African crustal fracture fluids preserve paleometeoric water signatures for up to tens of millions of years. Chemical Geology, 493. 379-395 doi:10.1016/j.chemgeo.2018.06.011 | Journal (article/letter/editorial) | | Accepted Manuscript South African crustal fracture fluids preserve paleometeoric water signatures for...Barbara Sherwood Lollar, Chris J. Ballentine , South African crustal fracture fluids preserve paleometeoric...apply to the journal pertain. ACCEPTED MANUSCRIPT South African Crustal Fracture Fluids Preserve Paleometeoric...Biotechnology, University of the Free State, CE Bloemfontein, South Africa 10 Biology Department, New Mexico...Fermi Institute, The University of Chicago, 5734 South Ellis Avenue, Chicago, IL 60637, U.S.A. (andyheard@uchicago |  | | Journal (article/letter/editorial) | | hat ReflectProterozoicWeathering, Welkom Gold Field, South Africa W. E. L. MINTER, Departmentof Geology...of erosionin the Witwatersrand succession in the Welkom gold field. Fluvial and debris flow sedimentson...of arthe earliest cratonic sediments in southern Africa enites,with minor gravelfacies,andwere deposited...fiuviallydominatedupperpart by trough crossbedded quartz arenites. These of the WitwatersrandSupergroup...the St. Helenafan and at the baseof the overlying Welkom fan, is referred to collectivelyasthe Intermediate |  | | Journal (article/letter/editorial) | | produced a fan channel system mainly filled with quartz pebbles. At present, most researchers support a...sedimentation basin by the auriferous hydrothermal quartz of pebble or sand dimension that was metamorphosed...processes, temperature of the Earth’s surface, and state and composition of primary atmosphere at early stages...gneisses (“gray gneisses”) detected, though in local sectors, virtually in all continents and ancient...Rand, (V) Carletonville, (VI) Klerksdorp, (VII) Welkom. (1−12) Major reefs developed in the western fields: |  | Sherwood Lollar, B., Voglesonger, K., Lin, L.-H., Lacrampe-Couloume, G., Telling, J., Abrajano, T.A., Onstott, T.C., Pratt, L.M. (2007) Hydrogeologic Controls on Episodic H2 Release from Precambrian Fractured Rocks—Energy for Deep Subsurface Life on Earth and Mars. Astrobiology, 7 (6) 971-986 doi:10.1089/ast.2006.0096 | Journal (article/letter/editorial) | | range and H2 levels up to 9–58% by volume in the free gas phase are reported for groundwaters at sites...for groundwaters from the Witwatersrand Basin, South Africa, these findings indicate that deep Precambrian...signatures of H2 gas from Canada, Finland, and South Africa are consistent with a range of H2-producing...at 2–3 km depth in the Witwatersrand Basin of South Africa, Lin et al. (2006b) and Sherwood Lollar et al...previous studies of sites in Canada, Finland, and South Africa, the current paper shows that, worldwide, Precambrian |  | | Journal (article/letter/editorial) | | margin of the Archaean Witwatersrand Basin of South Africa associated with regional greenschist facies...in producing gold deposits were the widespread local concentrations of C and Fe on unconformity surfaces...Sciences, University of Stellenbosch, Stellenbosch, South Africa 2 *Corresponding author, email neil@phillipsgold...model. Keywords: Gold, Witwatersrand, Archaean, South Africa, Metamorphism, Devolatilisation, Replacement...Origin of Witwatersrand gold 1 (A) Map of southern Africa showing the major Archaean cratons; the Witwatersrand |  | | Journal (article/letter/editorial) | | Empire Street, WITS 2050, Gauteng, Johannesburg, South Africa a r t i c l e i n f o Article history: Received... a b s t r a c t The Witwatersrand Basin in South Africa has been the focus of gold exploitation for...the Free State (Welkom), Klerksdorp, West Wits Line, West Rand, Central Rand, East Rand and South Rand.... . . . . . . . . . . . . . . . . . . . . 3.2. South Rand goldfield . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . . . Free State (Welkom) goldfield . . . . . . . . . . . . . . . |  | | Journal (article/letter/editorial) | | University of the Witwatersrand, Wits, 2050, South Africa Abstract. Chloritoid and pyrophyllite occur...particularly common in foliated zones, adjacent to quartz veins, and near unconformably overlying auriferous...the distribution of chloritoid and pyrophyllite, quartz veining and textures. F1uid:rock ratios calculated...Koen, 1975; Palmer, 1986; Phillips, 1987). In the Welkom goldfield, chloritoid- andor pyrophyllite-bearing...interpreted to be diamictites, in the west of ERPM gold mine (D. Martin, personal communication, 1986). Mature |  | | Journal (article/letter/editorial) | | photosynthesizers at around 3.0 Ga, the first ‘whiffs’ of free oxygen produced by photosynthesis under an overall...University of Cape Town, Rondebosch, Cape Town 7701, South Africa e-mail: hartwig.frimmel@uni-wuerzburg.de Q....mineralization was indeed synsedimentary. Limited local remobilization of gold and other ore constituents...compared with average continental crust, average South African peridotite xenolith and Allende meteorite...Observations of primary gold inclusions within detrital quartz clasts (Fig. 2d) or within greenstone clasts (Fig |  | Young, E.D., Kohl, I.E., Lollar, B. Sherwood, Etiope, G., Rumble, D., Li (李姝宁), S., Haghnegahdar, M.A., Schauble, E.A., McCain, K.A., Foustoukos, D.I., Sutclife, C., Warr, O., Ballentine, C.J., Onstott, T.C., Hosgormez, H., Neubeck, A., Marques, J.M., Pérez-Rodríguez, I., Rowe, A.R., LaRowe, D.E., Magnabosco, C., Yeung, L.Y., Ash, J.L., Bryndzia, L.T. (2017) The relative abundances of resolved l2CH2D2 and 13CH3D and mechanisms controlling isotopic bond ordering in abiotic and biotic methane gases. Geochimica et Cosmochimica Acta, 203. 235-264 doi:10.1016/j.gca.2016.12.041 | Journal (article/letter/editorial) | | temperature of CH4 formation 253 of ~ 60oC. Methane is free of 254 (Whiticar and Etiope 2014). 14 C, indicating...We 262 analyzed deep mine samples from the Witwatersrand Basin, South Africa and from the Canadian ...from the Witwatersrand Basin, including 267 the Beatrix, Masimong, Kloof, and Tau Tona mines (Figure 4)...4). Sampling depths were from ~1 268 km (Beatrix) to 3.3 km (Kloof). The Witwatersrand lies within the...Lippmann-Pipke et al. 2011). 282 Waters from the Beatrix, Masimong, and Tau Tona mines are dominated by |  | | 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...cover successions of the Kaapvaal Craton in South Africa (Fig. 1). A large amount of geochemical data...Palaeoproterozoic marine shales of the Kaapvaal Craton, South... in the hinterland of the Witwatersrand Basin |  | Morishita, Yuichi, Hammond, Napoleon Q., Momii, Kazunori, Konagaya, Rimi, Sano, Yuji, Takahata, Naoto, Ueno, Hirotomo (2019) Invisible Gold in Pyrite from Epithermal, Banded-Iron-Formation-Hosted, and Sedimentary Gold Deposits: Evidence of Hydrothermal Influence. Minerals, 9 (7) 447 doi:10.3390/min9070447 | Journal (article/letter/editorial) | | of Limpopo, Private Bag X1106, Sovenga 0727, South Africa Atmosphere and Ocean Research Institute, University...banded-iron-formation (BIF)-hosted Au deposit in South Africa using secondary ion mass spectrometry (SIMS)...epithermal systems, deposits with high-sulfidation-state minerals, including enargite, tennantite, and covellite...reduced fluids are associated with low-sulfidation-state minerals [22]. 2.2. Epithermal Deposits in Kyushu...Iwato, and Akeshi deposits, are in the Nansatsu district of Kagoshima-ken and are thus commonly called |  | | Report (issue) | | 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 SWAZILAND SWEDEN SWITZERLAND.........................................59 3.3.4. Mine data .............................................Kazakhstan Canada Russian Federation Namibia South Africa Niger Brazil China Greenland (Denmark) Ukraine...Rössing in Namibia and the closure of the Kayelekera mine in Malawi as a result of low prevailing uranium |  | | Journal (article/letter/editorial) | | University of the Witwatersrand, Johannesburg, South Africa With 7 Figures Received August 13, 1998; revised...Group shales from three boreholes to the east and south of the Vredefort Dome is lower greenschist facies...samples the peak metamorphic assemblage consists of quartz + muscovite + chlorite, with the phyllosilicates...replaced by assemblages consisting of pyrite ÷ quartz ± chlorite + stilpnomelane ± calcite ± carbonaceous...availability of exposure, as almost all of the central and south-eastern portions of the basin are covered by post-Witwatersrand |  | | Book | | I hope that this volume provides both a useful state-of-the-art review and an insight into the scientific...Manchester in 1973 (Ph.D.) and was then employed as a mine and exploration geologist by Falcon Mines Ltd in...and applied research in collaboration with the local mining industry. In 1984 he moved to the University...consultant on gold mining and exploration in Europe, Africa, and the Middle East. Professor D.1. Groves Key...geochemical exploration programmes, in France and North Africa, where he has gained considerable experience in |  | McCarthy, T.S., Corner, B., Lombard, H., Beukes, N.J., Armstrong, R.A., Cawthorn, R.G. (2018) The pre-Karoo geology of the southern portion of the Kaapvaal Craton, South Africa. South African Journal of Geology, 121 (1) 1-22 doi:10.25131/sajg.121.0006 | Journal (article/letter/editorial) | | the southern portion of the Kaapvaal Craton, South Africa T.S. McCarthy School of Geosciences, University...2050, South Africa Shango Solutions, HHK House, 22 Ethel Street, Johannesburg 2194, South Africa e-mail:...Department of Geosciences, University of Cape Town, South Africa e-mail: branko@iafrica.com.na H. Lombard Geo-Consult...address: PO Box 469, Struben's Valley, 1735, South Africa e-mail: henri.lombard@gmail.com N.J. Beukes...University of Johannesburg, Auckland Park 2006, South Africa e-mail: nbeukes@uj.ac.za R.A. Armstrong Research |  | | Journal (issue) | | If we fail to provide any of this, your rental is FREE* until we fix it. *The only condition is you need...Instruments Visit www.envirotechonline.com ◆ Call Toll Free 1-800-468-8921 EnviroTech’s Quality Guarantee on...ordered, your rental is free • If any rental doesn’t work, your rental is free RENTAL RATES 75/200/600...We accept P.O.s Solinst Levelogger ◆ Call Toll Free 1-800-468-8921 75/210/600 DAY WEEK MONTH Also a...subject to fees by EARTH. Scott Burns (Portland State University) Jacob Haqq-Misra (Blue Marble Space |  | | Journal (article/letter/editorial) | | 1957. HAR~,ISON, J.V.: The Pacific Mountains of South America. 8th Pacif. Sci. Congr. II A. 1956. : Some...Editor: Handboek of South American Geology. An explanation of the Geologic Map of South America. Geol. Soe...precariously poised. Occasional violent rain-storms of local extent occur and result in sweeping some of the...inch thick. The sections described lie north and south of Lima. They are distributed capriciously at intervals...of the batholith, the belt of volcanics, and the south western front of the Cretaceous. - - G ~ granite; |  | | Journal (issue) | | with popular • Coordinate lon/lat, UTM, State Plane, local, custom tools such as maps,systems: logs...through the Online Helptypes Files de, UTM, State Plane, local, custom • •Numerous gridding and solid modeling... Other Tools • Time-based animations Download FREE Trial at www.RockWare.com models arth and posters...Dourlat 25 Geothermal energy developments in the district heating of Szeged M. Osvald, J. Szanyi, T. Medgyes...Willis-Richards & A.J.S.C. Pereira 34 Geothermal use of mine water L.M. Lara, I. G. Colinas, M.T Mallada, A.E |
|
