 | Smit, C.A., Van Reenen, D.D., McCourt, S., Huizenga, J.M., Belyanin, G., Vafeas, N.A. (2019) Hypozonal orogenic gold mineralization in the Giyani Goldfield, Northern Kaapvaal Craton/Limpopo Complex. South African Journal of Geology, 122 (4) 455-488 doi:10.25131/sajg.122.0037 | Journal (article/letter/editorial) | | gold mineralization in the Giyani Goldfield, Northern Kaapvaal Craton/ Limpopo Complex C.A. Smit and D.D...Johannesburg, PO Box 524, Auckland Park, 2006, South Africa email: christofasmit@gmail.com; dirkvr@uj.ac...Sciences, University of KwaZulu Natal, Durban, South Africa email: mccourts@ukzn.ac.za J.M. Huizenga Economic...Johannesburg, P.O. Box 524, Auckland Park, 2006, South Africa email: jan.huizenga@jcu.edu.au G. Belyanin Department...Johannesburg, P.O. Box 524, Auckland Park, 2006, South Africa Email: gbelyanin@uj.ac.za N.A. Vafeas Department |  | | Journal (article/letter/editorial) | | Craton, Giyani area, and part of the Limpopo Belt (modified from Rollinson 1993). Greenstone belts: G...G Giyani; M Murchison; P Pietersburg, HRSZ Hout River Shear Zone, TSZ Triangle Shear Zone. GEOLOGY AND...MINERALIZATION OF THE STUDY AREA The study area—the Giyani greenstone belt (GGB)—is the same area studied by Carranza...supracrustal rocks (i.e., the Giyani Group) in the GGB are flanked to the south by younger granite and to...cides with or forms part of the oblique to reverse south-verging, north-dipping regional-scale Hout River |  | | 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 ...Archaean Geology of the Kaapvaal Craton, Southern Africa 123 Editors Alfred Kröner Institut für Geowissenschaften...Geology University of Johannesburg Auckland Park, South Africa ISSN 2364-6438 ISSN 2364-6446 (electronic)...continued interest. The Kaapvaal Craton of Southern Africa is featuring prominently in early Earth studies |  | | Journal (article/letter/editorial) | | http://www.tandfonline.com/loi/tigr20 The Hadamengou Mine: A Typical Gold Deposit in the Archean Granulite... Box 524 Auckland Park, Johannesburg, 2000, South Africa b Department of Geology , Shenyang Institute... Box 524 Auckland Park, Johannesburg, 2000, South Africa Published online: 06 Jul 2010. To cite this...-Y. Yang & D. D. Van Reenen (1994) The Hadamengou Mine: A Typical Gold Deposit in the Archean Granulite...& Son, Inc. All rights reserved. The Hadamengou Mine: A Typical Gold Deposit in the Archean Granulite |  | | Journal (article/letter/editorial) | | in mid-crustal auriferous mylonites of the Renco mine, southern Zimbabwe Received: 27 October 1998 /...the Renco mine in the Northern Marginal Zone of the late-Archaean, granulite-facies Limpopo Belt in southern...Marginal Zone onto low- to medium-grade granite-greenstone terrains of the Zimbabwe craton. Mineral assemblages...Stellenbosch, Private Bag X1, Matieland 7602, South Africa undergone extensive post-entrapment modi®cations...were generated from dehydration of subcreted greenstone terrains of the Zimbabwe craton. Introduction |  | | Journal (article/letter/editorial) | | in the mineralized lithologies of the Renco gold mine are dominated by carbonic inclusions of highly variable...inclusions occurs in distinct microstructural domains of quartz crystals (i.e. subgrain-, grain boundaries). Therefore...Müller 1997; Ridley et al. 2000) and Southern Africa (Limpopo Belt: van Reenen et al. 1994; Gan and van Reenen...conclusions for gold mineralization in the Ashanti Belt, Ghana, and proposed a new category of ore-forming...granulitefacies Northern Marginal Zone of the Limpopo Belt. An attempt has been made to compare microthermometric |  | | Report (issue) | | metals 106 and semi-precious minerals Precious Quartz 106 '- 106 crystal 107 *- Quicksilver Silica...Limestone Manganese - - Mineral paint - — Quartz 211 21 21 crystal Quicksilver 213 Roofing...location of Calaveras County Map of the Angels Camp district showing geology and lode mines Sketch map of the...._ West Point-Railroad Flat-Glencoe of the district, — of the Carson Hill Figure 7. Cross section...of the Figure 9. Cross section of Royal gold mine Map Figure 11. 38 46 area Figure Figure 10 |  | | Journal (article/letter/editorial) | | volcanic rocks near Tiele, Northwest Benin, West Africa 58(1-4) 169-194: [1992] Aguirre Aguirre, Luis...Shield; im- plications from the 1.6 Ga Amal-Horred Belt, SW Sweden Ahall Ahall, Karl-Inge, Cornell, D. H...Archaean Campbell Group, western Kaapvaal Craton, South Africa Alviola Alviola, R., Johanson, B. S., Ramo...Pendjari Formation, Benin and Burkina-Faso, West Africa Amelin Amelin, Yu. V., Heaman, L. M. and Semenov...co- balt mineralization in the Modum Complex, South Norway; implications for Precambrian crustal evolution |  | | Journal (article/letter/editorial) | | (CIZ) in the western branch of European Variscan belt, mainly on the eastern flank of the Valongo anticline...microfractures of the sulfides or in associated quartz veins; and Gold III occurs as free gold particles...alluvial gold as well as gold in gossan and in quartz veins (Fuertes-Fuente et al., 2016). A gossan is...boundaries, filling late fractures or in cavities in quartz veins. The occurrence of mineralized veins, which...Noronha et al. (2000) concluded that the gold ores in quartz veins appear to be the result of three successive |  | | Report (issue) | | and Grade-Tonnage Information on Low-Sulfide Au-Quartz Veins by James D. Bliss and Gail M. Jones Open-File...mineralogy of deposits classifed as lowsulfide Au-quartz veins were compiled for deposits found throughout...357 deposits, including deposit name, country, local geographical area, mineralogy, gold and silver grades...deposit. Table 4, part B, gives an alphabetic list of mine and properties followed by the deposit name. CHARACTERISTICS...tabulation have characteristics of low-sulfide Au-quartz veins as described in Berger (1986). These deposits |  | Doyle, M. G., Fletcher, I. R., Foster, J., Large, R. R., Mathur, R., McNaughton, N. J., Meffre, S., Muhling, J. R., Phillips, D., Rasmussen, B. (2015) Geochronological Constraints on the Tropicana Gold Deposit and Albany-Fraser Orogen, Western Australia. Economic Geology, 110 (2) 355-386 doi:10.2113/econgeo.110.2.355 | Journal (article/letter/editorial) | | Australia Abstract Gold mineralization at the Tropicana mine occurs within the Plumridge terrane along the eastern...Tropicana mineralization is distinctly younger than greenstone-associated gold deposits elsewhere in the Yilgarn...craton. As in the Dharwar craton, India, and the Limpopo belt, Zimbabwe, economic gold mineralization at Tropicana...Renco in Zimbabwe, Hutti in India, Challenger in South Australia, and Griffins Find and Big Bell in Western...reworking is amphibolites-granulite facies in the south, greenschist facies in the north (Spaggiari et al |  | Koglin, Nikola, Zeh, Armin, Franz, Gerhard, Schüssler, Ulrich, Glodny, Johannes, Gerdes, Axel, Brätz, Helene (2018) From Cadomian magmatic arc to Rheic ocean closure: The geochronological-geochemical record of nappe protoliths of the Münchberg Massif, NE Bavaria (Germany) Gondwana Research, 55. 135-152 doi:10.1016/j.gr.2017.11.001 | Journal (article/letter/editorial) | | Zone in Germany forms part of the Variscan orogenic belt, extending AC from Spain in the west to Poland...and its wider role within the European Variscan belt, detailed knowledge about the timing of geological...least parts of the Teplá-Barrandian block (e.g. Franke et al. 2017). The Münchberg Massif superposes very... SC NW Bavaria (e.g. Behr et al. 1982; Franke 1984; Franke et al. 1995 and references therein) NU ...melanocratic, hornblende-rich and leucocratic, feldspar-quartz-rich rocks. Both the melanocratic and the leucocratic |  | | Conference Proceedings (Volume) | | Cover photograph: View of the Aitik open pit copper mine in the very north of Sweden. Mining operations started...for interpretive bedrock mapping in the Giyani area (South Africa) .. ...................................mineral potential map of the Neoproterozoic Gariep Belt in Namibia .......................... 480 . ...area of the Kristineberg VHMS deposit, Skellefte district, Sweden .......................................A. Massive Zn-Cu-Pb deposits in the Røros ore district, Norway: setting and formation ............. |  | | Journal (article/letter/editorial) | | early Palaeozoic rifting (Weber and Behr 1983; Franke 1993). This is apparently supported by U—Pb zircon...interpreted to date the peak of high-grade metamorphism. Franke (1993) has challenged this interpretation which...alone during periods of uplift, as speculated by Franke (1993). Instead, zircons almost always preserve...grains from the Phalaborwa igneous complex, South Africa, during the course of this study. These zircons...Polish Sudetes (O’Brien et al. 1997), the Limpopo belt of South Africa (Jaeckel et al. 1997) and in Archaean |  | | Journal (article/letter/editorial) | | Meggen and those deposits in the Iberian Pyrite Belt. Introduction The Palaeozoic volcano-sedimentary...7, D-95652 Waldsassen, Germany (previously Chief Mine Geologist, Preuûag AG Metall, Goslar, Germany) ...hunting expedition. The wealth generated by the mine was the basis for the development of the city of...immediately to the north of the mine in the Harz Mountains. The mine was an important source of revenue...activities. Agricola (1557) mentions the Rammelsberg mine only once (De re Metallica ± 6th Book), and describes |  | | Journal (issue) | | research into the geology and geomorphology of South West England and the surrounding marine areas; to...to hold Annual Conferences at various places in South West England where those engaged in this research...visit to the city (or the eighth if we include the 'South Western Conferences' and their historic inaugural...shown important exposures in ECC's Greystone Quarry south-east of Launceston, on Brent Tor and in the stream...set against a broader background by Dr Wolfgang Franke of the Geological and Palaeontological Institute |  | | Journal (article/letter/editorial) | | mineralization styles, which are (1) extensional quartz-stibnite vein systems, and (2) (Cu)–Pb–Sb sulphosalt...Pb-sulphosalts (zinkenite, semseyite, plagionite) formed in quartz–stibnite vein systems display Pb isotope ratios...thrust zones hosting Pb–Zn ores and crosscutting quartz–ankerite fissure veins (Ramsbeck deposit) indicates...Pb–Zn mineralization styles in the European Variscan belt (e.g. Wedepohl et al. 1978; Höhndorf and Dill 1986;...and Cook 2000a). In addition to the formation of quartz–stibnite–sulphosalts veins, which show numerous |  | | Book | | France and Related Areas (1994) R.D. DALLMEYER, W. FRANKE, and K. WEBER {Eds.}: Pre-Permian Geology of Central...Central and Eastern Europe (1995) R.D. Dallmeyer W. Franke K. Weber (Eds.) Pre-Permian Geology of Central...University of Georgia Athens, Georgia 30602-2501 USA W. FRANKE Justus-Liebig-Universität Senckenbergstrasse 3... DALLMEYER W. FRANKE K. WEBER Contents I Introduction R.D. DALLMEYER, W. FRANKE, and K. WEBER...Rhenohercynian Foldbelt III.A Introduction W. FRANKE . . . . . . . . . . . . . . . . . . . . . . . |  | Heubeck, Christoph, Engelhardt, Jonathan, Byerly, Gary R., Zeh, Armin, Sell, Bryan, Luber, Tim, Lowe, Donald R. (2013) Timing of deposition and deformation of the Moodies Group (Barberton Greenstone Belt, South Africa): Very-high-resolution of Archaean surface processes. Precambrian Research, 231. 236-262 doi:10.1016/j.precamres.2013.03.021 | Journal (article/letter/editorial) | | deformation of the Moodies Group (Barberton Greenstone Belt, South Africa): Very-high-resolution of Archaean surface...online 6 April 2013 Keywords: Archaean Barberton South Africa Moodies Group Zircon geochronology Subsidence...the Middle Archaean Moodies Group, Barberton Greenstone Belt (BGB), contain rare to abundant zircon. Dating...mid-Archaean Moodies Group of the Barberton Greenstone Belt (BGB), South Africa. These data place new constraints...up to 3.7 km thick Moodies Group, whose dominant quartz-rich sandstones and conglomerates deposited in |  | | Book | | Germany Maarten J. de Wit, Port Elizabeth, South Africa François M. Roure, Rueil-Malmaison, France ...sediments of the Ediacaran Rocha Formation (Dom Felicano Belt) at the Atlantic coast of Uruguay. These metasediments...Oranjemund Group (Gariep Belt) cropping out in the western borders of Namibia and South Africa. They were split...split up in the Mesozoic during the south Atlantic Ocean opening”. Photo by Mathias Hueck Printed on acid-free...Ortelius was the first to recognize the match of the South American and African Atlantic margins (Ortelius |  | | Journal (article/letter/editorial) | | Germany Abstract The Rhenohercynian thrust- and fold-belt of Central Europe hosts a syn- to post-kinematic...massif, but is mainly developed in the Siegerland district as synkinematic lodes which are hosted by low-grade...gradually decrease from S.E. to N.W. across the belt. This trend correlates with decreasing degree of...the postkinematic magmatism of the Rhenohercynian belt. Main(-siderite)-stage mineralisation of the Rhenish...the Variscan siderite lodes of the Siegerland district, Germany, which have been among the world's largest |  | | Journal (article/letter/editorial) | | reworking. The source of the iron is to be related to local, glacio-eustatic driven, emergence of Upper Ordovician...same stratigraphic interval in NW Sardinia (Nurra district) as oolitic ironstones. Phanerozoic ironstones...ascertain whether: Fig. 1. Schematic view of the south European Variscan chain (after Cappelli et al.,...connected to a glacio-eustatic sea level drop. 2. Local geology The Sardinia and Corsica segment of the...consisting of an anchimetamorphic thrust and fold belt, which is characterized by a sedimentary succession |  | | Journal (issue) | | Introduction to Lapidary will be taught by Nevin Franke: #1750.501 5:15 – 9:15 pm March 26 – April 30 To...Cash awards: 1st place $10; 2nd place $5. Feb: Quartz and other crystals, bought or found. Mar: Any recent...Apr: Any faceted stone cut by member. May: Bolas & belt buckles with stones, bought or made by member. January...21-23: Bridgeton (ST. Louis), MO Rock Hobby Club of Greater St. Louis Annual Show, Machinists Hall Auditorium...Geological Society's 49th Annual Show, Des Plaines Park District Leisure Center, Adults $3, seniors and students |  | Schnapperelle, S., Mezger, J.E., Stipp, M., Hofmann, M., Gärtner, A., Linnemann, U. (2020) Polyphase magmatic pulses along the Northern Gondwana margin: U-Pb zircon geochronology from gneiss domes of the Pyrenees. Gondwana Research, 81. 291-311 doi:10.1016/j.gr.2019.11.013 | Journal (article/letter/editorial) | | recording much of the tectonic history of an orogenic belt. The general dome-shaped structure consisting of...southwest European re Variscides, located to the south of the Rheic Ocean suture. Either part of the Iberia...Iberia microplate or terrane (Stampfli et al., 2013; Franke et al., 2017) or the Amorican Spur lP of the...transpressive deformation, e.g., Cap de Creus shear belt in the eastern Axial Zone (Druguet, 2001). Journal...dome is separated from the Hospitalet dome to the south of by the E–W-striking Mérens fault and shear |  | LEXA, O., SCHULMANN, K., JANOUŠEK, V., ŠTÍPSKÁ, P., GUY, A., RACEK, M. (2011) Heat sources and trigger mechanisms of exhumation of HP granulites in Variscan orogenic root. Journal of Metamorphic Geology, 29 (1) 79-102 doi:10.1111/j.1525-1314.2010.00906.x | Journal (article/letter/editorial) | | melts which directly contaminated and enriched the local lithospheric mantle by lithophile elements, most...Bohemian Massif (e.g. 2010 Blackwell Publishing Ltd Franke, 2000), whereas in the second model, granulites...whereby heavy mafic 79 80 O. LEXA ET AL. rocks (greenstone belts) rest upon light intermediate to felsic..., 2007). The first occurs mostly in south Bohemia, the second belt follows the eastern boundary between...Brunia continent and the third is a less extensive belt of granulite rocks tracing the contact between the |
|
