 | | Journal (article/letter/editorial) | | Photographs January/February: Chalcopyrite on quartz, La Mine de Giraud, La Gardette, Bourg d’Oisan, Isère...Benjamin specimen, Jeff Scovil photo. March/April: Quartz, variety amethyst, Las Vigas, Veracruz, Mexico...Martin Zinn specimen, Jeff Scovil photo. May/June: Quartz (Herkimer “diamond”), Herkimer Diamond Mines, Inc...albite, variety cleavelandite, 49er Pocket, Oceanview mine, Pala district, San Diego County, California. Bill...Scovil photo. September/October: Gold, Mockingbird mine, Mariposa County, California. Collector’s Edge Minerals |  | Cairncross, Bruce, Windisch, Wolfgang, Smit, Henk, Fraser, Allan, Gutzmer, Jens (2008) The Vergenoeg: Gauteng Province, South Africa Fluorite Mine. Rocks & Minerals, 83 (5) 410-421 doi:10.3200/rmin.83.5.410-421 | Journal (article/letter/editorial) | | RG E N O E G GAUTENG PROVINCE, SOUTH AFRICA T FLUORITE MINE he Vergenoeg fluorite mine is located in...the Gauteng Province of South Africa, approximately 80 kilometers northeast of Pretoria. The mine is somewhat...somewhat of an anomaly regarding the production of fluorite mineral specimens—it is located on the largest...virtually devoid of large, aesthetic fluorite crystals. Even so, there is an interesting array of other secondary...addition, the mine has produced spectacular botryoidal and stalactitic goethite and a variety of micromount-sized |  | | Journal (article/letter/editorial) | | Department of Geology University of Johannesburg PO Box 524, Auckland Park 2006 Gauteng, South Africa brucec@uj...Descloizite is one of my personal favorite collectible species. Berg Aukas is the acknowledged king of localities...during its tenure, produced tens of thousands of crystals in a wide variety of habits. This thumbnail specimen...specimen (2.8 cm) is one of these. Partly translucent and twinned, this Christmas-treelike cluster is brilliantly...well. It is one of my favorite thumbnails in my collection. I have had the good fortune of photographing |  | Graupner, Torsten, Mühlbach, Caroline, Schwarz-Schampera, Ulrich, Henjes-Kunst, Friedhelm, Melcher, Frank, Terblanche, Hennie (2015) Mineralogy of high-field-strength elements (Y, Nb, REE) in the world-class Vergenoeg fluorite deposit, South Africa. Ore Geology Reviews, 64. 583-601 doi:10.1016/j.oregeorev.2014.02.012 | Journal (article/letter/editorial) | | OREGEO-01179; No of Pages 19 Ore Geology Reviews xxx (2014) xxx–xxx Contents lists available at ScienceDirect...com/locate/oregeorev Mineralogy of high-field-strength elements (Y, Nb, REE) in the world-class Vergenoeg fluorite deposit...deposit, South Africa Torsten Graupner a,⁎, Caroline Mühlbach b, Ulrich Schwarz-Schampera a, Friedhelm Henjes-Kunst...D-30171 Hannover, Germany Vergenoeg Mining Company (PTY) LTD., South Africa d Chair of Geology and Economic...Economic Geology, University of Leoben, Peter-Tunnerstraße 5, 8700 Leoben, Austria b c a r t i c l e i n f |  | Goff, B. H., Weinberg, R., Groves, D. I., Vielreicher, N. M., Fourie, P. J. (2004) The giant Vergenoeg fluorite deposit in a magnetite?fluorite?fayalite REE pipe: a hydrothermally-altered carbonatite-related pegmatoid?. Mineralogy and Petrology, 80 (3) 173-199 doi:10.1007/s00710-003-0012-6 | Journal (article/letter/editorial) | | 173–199 DOI 10.1007/s00710-003-0012-6 The giant Vergenoeg fluorite deposit in a magnetite–fluorite–fayalite...Global Metallogeny, School of Earth and Geographical Sciences, University of Western Australia, Crawley...Australia 2 Vergenoeg Mine, Farm Kromdraai, Rust De Winter, SA, Pienaar’s River, South Africa Received February...world-class Paleoproterozoic Vergenoeg fluorite deposit in South Africa is hosted in a breccia pipe comprising...comprising units with varying proportions of pegmatoidal fayalite, magnetite, fluorite and siderite. |  | | Journal (article/letter/editorial) | | Depositsand AssociatedPyroclastic Rock Suite at Vergenoeg, BushyeldComplex I. T. CROCKER GeologicalSurveyof...farms Kromdraai and Naaupoortnear Rust de Winter is of volcanogenic originandis relatedto a rhyoliticpy...withinthe pyroclastic suite.At surfacethe Vergenoeg orebodyis madeup of an oxidizedgossan,which consistsof massiveto...strikingnorthnorthwestand consisting of similarmetsparoriginatefrom the apicalpart of theseplugs. The contactof...interpretationis supportedby the experimentalpetrologicaldata of Ernst (1968). Introduction RooibergGroup and the |  | | Journal (article/letter/editorial) | | granites of the Bushveld Complex Judith A. Kinnaird Economic Geology Research Institute, School of Geosciences...Geosciences University of the Witwatersrand, Private Bag 3, Wits 2050 South Africa email: kinnairdj@geosciences...School of Geosciences University of the Witwatersrand, Private Bag 3, Wits 2050 South Africa email: krugerj@geosciences...School of Geosciences University of the Witwatersrand, Private Bag 3, Wits 2050 South Africa cawthorng@geosciences...2004 Geological Society of South Africa ABSTRACT The Lebowa Granite Suite of the Bushveld Complex is |  | | Report (issue) | | Fluorine Chapter G of Critical Mineral Resources of the United States—Economic and Environmental Geology...1802–G U.S. Department of the Interior U.S. Geological Survey Periodic Table of Elements 1A 8A 1 2...(Minerva) Mine, Cave-in-Rock subdistrict, Illinois-Kentucky fluorspar district, showing the sequence of mineral...solely for its fluorine content. Photograph courtesy of the Mineralogical and Geological Museum at Harvard...MGMH 124614 © Copyright 2012, President and Fellows of Harvard College. All rights reserved. Fluorine |  | | Journal (article/letter/editorial) | | KESLEB, * RUDOLF H. BOER,** Department of Geology, University of theWitwatersrand, P.O.WITS,Johannesburg...Department of Geological Sciences, University of Michigan, AnnArbor,Michigan 48109 Abstract Vergenoeg is a...genetically relatedto granites of the Bushveld Complex. It consists of a pipe-shaped bodycontaining primaryfayalite...bystratiform bodies of felsiteandfragmental hematite-fluorite debris.With the exception of its abundant fluorite...fluorite,Vergenoeg is similarto massive iron oxidedeposits suchasKiruna,PeaRidge,andCerroMercado, allofwhicharerelatedto |  | | Journal (article/letter/editorial) | | A GEOLOGICAL EXCURSION TO THE MINING AREAS OF SOUTH AFRICA by Aberra Mogessie, Christoph Hauzenberger...Wedenig & Sebastian Wiesmair Institute of Earth Sciences, University of Graz, Universitaetsplatz 2, A-8010...Juliane Hentschke Chair of Geology and Economic Geology, Mining University of Leoben, Peter-Tunner-Strasse...Christoph Gauert Department of Geology, University of the Free State, South Africa 1. Preface Almost a year...excursion for the students of the Institute of Earth Sciences, University of Graz. The choices were Argentina |  | | Journal (article/letter/editorial) | | Economic potential of the Rooiberg Group: volcanic rocks in the floor and roof of the Bushveld Complex...0002, South Africa Received: 17 May 1994/Accepted: 9 December 1994 Abstract. Volcanic rocks of the Rooiberg...preserved in the floor and roof of the marie Rustenburg Layered Suite of the Bushveld Complex. Field and...and geochemical characteristics of these volcanic rocks imply that they are genetically related to the...lowermost portion of the Rooiberg Group, underlying the Rustenburg Layered Suite. This type of mineralisation |  | | Journal (article/letter/editorial) | | The THABAZIMBI Mine Cave Limpopo Province, South Africa Downloaded by [University of California Santa...Department of Geology University of Johannesburg PO Box 524, Auckland Park 2006 Gauteng, South Africa brucec@uj...ALLAN FRASER PO Box 369 Fourways 2055 Gauteng, South Africa. mineralman@telkomsa.net STUART MacGREGOR...Kumba Iron Ore PO Box 9679 Centurion 0046 Gauteng, South Africa stuart.macgregor@angloamerican.com Figure...flank of Thabazimbi Mountain. I All photos by Bruce Cairncross The Thabazimbi mine cave in South Africa |  | | Journal (article/letter/editorial) | | Sn–F–(REE) mineralization, Bushveld Igneous Complex, South Africa Litshedzani Mutele ,1,2 Alazar Billay,1 and...with the Bushveld granites of the Bushveld Igneous Complex, South Africa. The Lebowa Granite Suite, commonly... is host to a continuum of polymetallic mineralization with a wide range of metal assemblages (Sn–Mo...generated by fuzzy logic modeling and a selection of targeting criteria (or spatial proxies) based on...critical processes responsible for the formation of the polymetallic mineralization. The spatial proxies |  | Hou, Tong, Charlier, Bernard, Namur, Olivier, Schütte, Philip, Schwarz-Schampera, Ulrich, Zhang, Zhaochong, Holtz, Francois (2017) Experimental study of liquid immiscibility in the Kiruna-type Vergenoeg iron–fluorine deposit, South Africa. Geochimica et Cosmochimica Acta, 203. 303-322 doi:10.1016/j.gca.2017.01.025 | Journal (article/letter/editorial) | | study of liquid immiscibility in the Kiruna-type Vergenoeg ironfluorine deposit, South Africa Tong Hou...study of liquid immiscibility in the Kiruna-type Vergenoeg iron-fluorine deposit, South Africa, Geochimica...org/10.1016/j.gca.2017.01.025 This is a PDF file of an unedited manuscript that has been accepted for...version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting...study of liquid immiscibility in the Kirunatype Vergenoeg iron-fluorine deposit, South Africa Tong Hou |  | | Journal (article/letter/editorial) | | granites of the Bushveld Complex – examples from the central southeastern lobe R.H. Bailie School of Geosciences...University of the Witwatersrand, Johannesburg, 2050, South Africa Current address: Department of Geology...Johannesburg, 2006, South Africa e-mail: glgy13@na.rau.ac.za L.J. Robb EGRI-HAL, School of Geosciences, University...University of the Witwatersrand, Johannesburg, 2050, South Africa e-mail: robblj@geosciences.wits.ac.za...Society of South Africa ABSTRACT Field mapping of a region in the central southeastern portion of the Bushveld |  | Groves, D. I., Bierlein, F. P., Meinert, L. D., Hitzman, M. W. (2010) Iron Oxide Copper-Gold (IOCG) Deposits through Earth History: Implications for Origin, Lithospheric Setting, and Distinction from Other Epigenetic Iron Oxide Deposits. Economic Geology, 105 (3) 641-654 doi:10.2113/gsecongeo.105.3.641 | Journal (article/letter/editorial) | | ©2010 Society of Economic Geologists, Inc. Economic Geology, v. 105, pp. 641–654 Iron Oxide Copper-Gold...Exploration Targeting, School of Earth and Environment, University of Western Australia, 35 Stirling...Department 4 Department of Geosciences, Smith College, Northampton, Massachusetts 01063 of Geology and Geological...School of Mines, Golden, Colorado 80401 Abstract The iron oxide copper-gold (IOCG) group of deposits...deposits, initially defined following discovery of the giant Olympic Dam Cu-U-Au deposit, has progressively |  | MAIER, W. D., ANDREOLI, M. A. G., GROVES, D. I., BARNES, S.- J. (2012) PETROGENESIS OF CU-NI SULPHIDE ORES FROM O'OKIEP AND KLIPRAND, NAMAQUALAND, SOUTH AFRICA: CONSTRAINTS FROM CHALCOPHILE METAL CONTENTS. South African Journal of Geology, 115 (4) 499-514 doi:10.2113/gssajg.115.4.499 | Journal (article/letter/editorial) | | PETROGENESIS OF CU-NI SULPHIDE ORES FROM O’OKIEP AND KLIPRAND, NAMAQUALAND, SOUTH AFRICA: CONSTRAINTS...METAL CONTENTS W.D. MAIER Department of Geosciences, University of Oulu 90014, Finland e-mail: wolfgang...ANDREOLI South African Nuclear Energy Corporation, South Africa; School of Geosciences, University of the...the Witwatersrand, Johannesburg 2000, South Africa e-mail: marco.andreoli@necsa.co.za D.I. GROVES Centre...Centre for Exploration Targeting, University of Western Australia, Crawley 6009, Australia e-mail: di_groves@hotmail |  | Günther, T., Haase, K. M., Klemd, R., Teschner, C. (2018) Mantle sources and magma evolution of the Rooiberg lavas, Bushveld Large Igneous Province, South Africa. Contributions to Mineralogy and Petrology, 173 (6) doi:10.1007/s00410-018-1477-y | Journal (article/letter/editorial) | | magma evolution of the Rooiberg lavas, Bushveld Large Igneous Province, South Africa T. Günther1 · K...Germany, part of Springer Nature 2018 Abstract We report a new whole-rock dataset of major and trace...continental large igneous province (LIP). The formation of the Paleoproterozoic Rooiberg Group is contemporaneous...with and spatially related to the layered intrusion of the Bushveld Complex, which stratigraphically separates...volcanic succession. Our new data confirm the presence of low- and high-Ti mafic and intermediate lavas (basaltic—andesitic |  | Cornell, D.H., Harris, M., Mapani, B.S., Malobela, T., Frei, D., Kristoffersen, M., Lehman Francko, K., Hanson, R. (2020) Dating of Guperas Formation rhyolites changes the stratigraphy of the Mesoproterozoic Sinclair Supergroup of Namibia. South African Journal of Geology, 123 (4). 633-648 doi:10.25131/sajg.123.0040 | Journal (article/letter/editorial) | | D R. H AN SON Dating of Guperas Formation rhyolites changes the stratigraphy of the Mesoproterozoic Sinclair...Sinclair Supergroup of Namibia D.H. Cornell Department of Earth Sciences, University of Gothenburg, SE40530...Department of Earth Sciences, University of Stellenbosch, Private Bag X1, Matieland 7602, South Africa e-mail:...cornell@gvc.gu.se M. Harris Department of Geology, University of Namibia, Southern Campus, P.O. Box 99546...Department of Geology, University of Namibia, Southern Campus, P.O. Box 99546 Department of Mining and |  | Cook, Robert B. (2017) Microminerals of the Bushveld Complex, South Africa by Maria T. Atanasova, Bruce Cairncross, and Wolfgang R. Windisch. Council for Geoscience, 280 Pretoria St., Silverton, Private Mail Bag 112, Pretoria 0001, South Africa; www.geoscience.org.za. 437 pages; 2016; R1,000 (US $74) plus shipping and handling (hardbound). Rocks & Minerals, 92 (3) 293 doi:10.1080/00357529.2017.1283666 | Journal (article/letter/editorial) | | 21:10 13 August 2017 Microminerals of the Bushveld Complex, South Africa by Maria T. Atanasova, Bruce Cairncross...Silverton, Private Mail Bag 112, Pretoria 0001, South Africa; www. geoscience.org.za. 437 pages; 2016; R1...to it is voluminous. Although it is the source of much of the world’s platinum-group metals and chromite...and post-intrusive history of the Bushveld has resulted in a wide variety of specimen-quality mineral occurrences...occurrences, many of them rich in microminerals. This book, therefore, describes many of these occurrences |  | | Journal (article/letter/editorial) | | evolution of convergent margins: Selected ore deposit models Stephen E. Kesler ) Department of Geological...Geological Sciences, UniÕersity of Michigan, 1006 C.C. Little Building, Ann Arbor, MI 48109, USA Received 16...in convergent margin arcs are related to thickness of the arc crust and its petrologic evolution, which...between average silica content of arc rocks and average thickness of arc crust. In general, tin, mercury...are most abundant in areas of thickest crust. Although the composition of ore deposits is strongly controlled |  | | Journal (article/letter/editorial) | | Transactions of the Royal Society of Edinburgh: Earth Sciences http://journals.cambridge.org/TRE Additional...Additional services for Transactions of the Royal Society of Edinburgh: Earth Sciences: Email alerts:...Commercial reprints: Click here Terms of use : Click here Nature and longevity of hydrothermal uid ow and mineralisation...mineralisation in granites of the Bushveld Complex, South Africa L. J. Robb, L. A. Freeman and R. A. Armstrong...Armstrong Transactions of the Royal Society of Edinburgh: Earth Sciences / Volume 91 / Issue 1-2 / January |  | | Journal (article/letter/editorial) | | Mineralogist, Volume 86, pages 1143–1150, 2001 Occurrence of apatite associated with magnetite in an ophiolite...MARIA ECONOMOU-ELIOPOULOS* University of Athens, Department of Geology, Panepistimiopolis, Athens 15784...× 1 m) of apatite associated with magnetite and silicates are present in the Agoriani area of the Othrys...(plagioclase lherzolite) of the mantle sequence, intruded by irregular bodies, dikes, and veins of gabbro, as well...well as by dikes of pyroxenite and pegmatitic gabbro. Apatite occurs as large (up to 3 cm long) well-formed |  | | Journal (article/letter/editorial) | | Sedimentology of the Beaufort-Molteno Karoo fluvial strata in the Tuli Basin, South Africa Emese M. Bordy...Rhodes University, Department of Geology, Grahamstown 6140, South Africa. e-mail: emese_bordy@yahoo.com...com Octavian Catuneanu University of Alberta, Department of Earth and Atmospheric Sciences, 1-26 Earth...The sedimentary rocks of the Karoo Supergroup in the Tuli Basin (South Africa) may be grouped into four...presents the findings of the sedimentological investigation of the fluvial clastic deposits of the Middle Unit |  | Li, Gen, Fang, Guicong, Feng, Zuohai, Xu, Cheng, Huang, Zhennan, Wang, Chunzeng (2022) Genetic Relationship between Granite and Fluorite Mineralization in the Shuanghuajiang Fluorite Deposit, Northern Guangxi, South China: Evidence from Geochronology, REE, and Fluid Geochemistry. Minerals, 12 (9) 1102 doi:10.3390/min12091102 | Journal (article/letter/editorial) | | Shuanghuajiang Fluorite Deposit, Northern Guangxi, South China: Evidence from Geochronology, REE, and Fluid...Shuanghuajiang Fluorite Deposit, Northern Guangxi, South China: Evidence from Geochronology, REE, and Fluid...Laboratory of Hidden Metallic Ore Deposits Exploration, College of Earth Sciences, Guilin University of Technology...College of Petroleum and Chemical Engineering, Beibu Gulf University, Qinzhou 535011, China School of Earth...University, Beijing 100871, China College of Arts and Sciences, University of Maine at Presque Isle, Presque Isle |
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