 | | Journal (article/letter/editorial) | | Photographs January/February: Chalcopyrite on quartz, La Mine de Giraud, La Gardette, Bourg dâOisan, IsĂšre, France...albite, variety cleavelandite, 49er Pocket, Oceanview mine, Pala district, San Diego County, California. Bill...Scovil photo. September/October: Gold, Mockingbird mine, Mariposa County, California. Collectorâs Edge Minerals...Analcime, Connecticut, 159 Anastasenko, G. F., Diamonds of Russia, 508â17 Anatase, Cochabamba, Bolivia, 119;...and Mineral Museumâ Home of the Somerville Collection, Barthurst, New South Wales, M. Rheinberger, E |  | 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 specimensâit 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 |  | | 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 |  | Graupner, Torsten, MĂŒhlbach, 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) xxxâxxx Contents lists available at ScienceDirect...com/locate/oregeorev Mineralogy of high-ïŹeld-strength elements (Y, Nb, REE) in the world-class Vergenoeg ïŹuorite deposit...deposit, South Africa Torsten Graupner a,â, Caroline MĂŒhlbach 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-TunnerstraĂe 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) | | 173â199 DOI 10.1007/s00710-003-0012-6 The giant Vergenoeg fluorite deposit in a magnetiteâfluoriteâfayalite...Global Metallogeny, School of Earth and Geographical Sciences, University of Western Australia, Crawley...Australia 2 Vergenoeg Mine, Farm Kromdraai, Rust De Winter, SA, Pienaarâs 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. |  | | Report (issue) | | Fluorine Chapter G of Critical Mineral Resources of the United StatesâEconomic and Environmental Geology...1802âG 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) | | 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) | | 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) | | 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) | | granites of the Bushveld Complex â 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 |  | | Journal (article/letter/editorial) | | Global Metallogeny, School of Earth and Geographical Sciences, The University of Western Australia, Crawley...dedicated to the memory of Nicholas (Nick) Rock who was a pioneer in the recognition of genetic links between...diverse range of mineral deposit types. Unfortunately, Nick died in early 1992 before many of these associations...university career was outstanding. He was ranked by one of his supervisors as the best student that he had been...geology and the petrogenesis of alkaline rocks. He quickly became an author of papers in international journals |  | | Journal (article/letter/editorial) | | China M. P. SMITHâ ,* AND P. HENDERSON Department of Mineralogy, Natural History Museum, Cromwell Road...deposit. The deposit consists of replacement bodies hosted in dolomite marble and of magnetite, hematite, and...associated with apatite, aegirine, amphibole, fluorite, calcite, and barite. Fluid inclusions from monazite-(Ce)...from 0.3 to 0.45, at temperatures of >280Âș to 330ÂșC and pressures of >0.7 kbar. Fluids in apatite and...carbonate dissolution at temperatures of >400Âș to ~300ÂșC and pressures of >0.9 to 1.4 kbars. Evidence for phase |  | | Journal (article/letter/editorial) | | evolution of convergent margins: Selected ore deposit models Stephen E. Kesler ) Department of Geological...Geological Sciences, UniĂersity 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 |  | Vonopartis, Leonidas, Nex, Paul, Kinnaird, Judith, Robb, Laurence (2020) Evaluating the Changes from Endogranitic Magmatic to Magmatic-Hydrothermal Mineralization: The Zaaiplaats Tin Granites, Bushveld Igneous Complex, South Africa. Minerals, 10 (4) 379 doi:10.3390/min10040379 | Journal (article/letter/editorial) | | Zaaiplaats Tin Granites, Bushveld Igneous Complex, South Africa Leonidas Vonopartis 1, * , Paul Nex 1 , Judith...School of Geosciences, University of the Witwatersrand, Private Bag 3, Johannesburg 2050, South Africa;...) Department of Earth Sciences, University of Oxford, Oxford OX1 3AN, UK Department of Geology, University...University of Johannesburg, P.O. Box, 524, Johannesburg 2006, South Africa Correspondence: Lvonopartis@gmail...Abstract: The stanniferous granites of the Zaaiplaats Tin Field are part of the A-Type Lebowa Granite Suite |  | | Journal (article/letter/editorial) | | 288 www.elsevier.com/locate/chemgeo Geochemistry of fluid inclusion brines from Earth's oldest Mississippi...Supergroup, South Africa Stephen E. Kesler a,â, Martin Reich a,b , Marlon Jean a,c a Department of Geological...Geological Sciences, University of Michigan, Ann Arbor, MI 48105, United States Departamento de GeologĂa, Facultad...Universidad de Chile, Santiago, Chile Department of Earth and Environmental Sciences, California State...NeoarcheanâPaleoproterozoic Transvaal basin in South Africa, which were deposited before the 2.4 to 2.0 |  | | Report (volume) | | ~o~.iSP:~.,~r of'Atrica Fluorspar Resources of Africa By RALPH E. VAN ALSTINE and PAUL G. SCHRUBEN ...OFFICE. WASHINGTON 1980 UNITED STATES DEPARTMENT OF THE INTERIOR CECIL D. ANDRUS, Secretary GEOLOGICAL...GEOLOGICAL SURVEY H. William Menard Dit-ector Library of Congress Cataloging in Publication Data Van Alstine...resources of Africa. (Geological Survey bulletin ; 1487) Bibliography: p. 1. Fluorspar-Africa. I. Schruben...[5-53' 95] 79-20343 For sale by Superintendent of Documents, U.S. Government Printing Office Washington |  | | Book | | Published by Struik Nature (an imprint of Penguin Random House South Africa (Pty) Ltd) Reg. No. 1953/000441/07...(Oxbow Crescent), Century City, 7441 PO Box 1144, Cape Town, 8000 South Africa Visit www.randomstruik.co...published edition, 2015: Penguin Random House South Africa (Pty) Ltd Publisher: Pippa Parker Managing editor:...(M) Sdn Bhd, Malaysia All rights reserved. No part of this publication may be reproduced, stored in a retrieval...or otherwise, without the prior written permission of the copyright owner(s). ISBN: 978 1 43170 084 4 e-Pub: |  | 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 |  | | Journal (article/letter/editorial) | | detachment in my right eye while visiting mines in Africa. The restorative operation in Moshi, Tanzania,...compared to some of the major losses experienced by the micromount community. Here are some of them. Neil Wintringham...his MS in geology at Cornell in 1947, spent much of his career as a science teacher, and like many mineral...National Association of Geoscience Teachers. He was an Elected Honored Member of the Leidy Microscopical...Society; director of the Pennsylvania Chapter, Friends of Mineralogy; and a member of the Mineralogical |  | | Journal (article/letter/editorial) | | (hydrothermal) fluids, consisting largely of H2O, CO2, and NaCl, formed most of Earthâs ore deposits. The fluids...meteoric (~100°C) systems. Salinities well above that of seawater are reached by boiling, evaporation, and...establishing the concentrations of metals in these fluids, the volume and duration of hydrothermal flow, and the...analyses of inclusion contents provide information on compositions of the fluids. Isotopic analyses of hydrothermal...fluids serve as geothermometers and tracers of the source of the fluid and its dissolved constituents (Farmer |  | Potter, N. J., Kamenetsky, V. S., Chakhmouradian, A. R., Kamenetsky, M. B., Goemann, K., Rodemann, T. (2020) Polymineralic inclusions in oxide minerals of the Afrikanda alkaline-ultramafic complex: Implications for the evolution of perovskite mineralisation. Contributions to Mineralogy and Petrology, 175 (3) doi:10.1007/s00410-020-1654-7 | Journal (article/letter/editorial) | | oxide minerals of the Afrikanda alkalineâultramafic complex: Implications for the evolution of perovskite...GmbH Germany, part of Springer Nature 2020 Abstract The exceptional accumulation of perovskite in the...complex (Kola Peninsula, Russia) led to the study of polymineralic inclusions hosted in perovskite and...and magnetite to understand the development of the perovskite-rich zones in the olivinites, clinopyroxenites...clinopyroxenites and silicocarbonatites. The abundance of inclusions varies across the three perovskite textures |  | | Journal (article/letter/editorial) | | ECONOMIC GEOLOGY prints partial tables of contents of a number of journals as an information service. Please...to obtain copies of the journals or papers. If you cannot arrange to get copies of interesting papers...No. 2, 2004 Chemical bleaching indicates episodes of fluid flow in deformation bands in sandstoneâW.T...Parry, Marjorie A. Chan, and Brenda Beitler Origin of overpressures in shales: Constraints from basin modeling...normal library sources, please contact the offices of the individual journals for assistance. Where possible |  | | Journal (issue) | | MINERALS Red Lead Mine: J. Halpern specimen. J. Scovil photo. In this issue also: a new chapter J...INTRODUCTION In this issue we start a new series of articles presenting mineral photographers showing...best, most famous photos and presenting the style of their work. ... Read on page 16 Collectors interview:...well known South African collector Bruce Cairncross. Bruce is a professor of Geology and Head of the Department...Department of Geology at the University of Johannesburg. ... Read on page 19 Journal presentations: Rock |  | Malobela, T., Mapani, B., Harris, M., Cornell, D.H., Karlsson, A., Jonsson, A.K., Lundell, C., Kristoffersen, M. (2019) Age and geological context of the Barby Formation, a key volcanic unit in the Mesoproterozoic Sinclair Supergroup of southern Namibia. South African Journal of Geology, 122 (4) 519-540 doi:10.25131/sajg.122.0038 | Journal (article/letter/editorial) | | context of the Barby Formation, a key volcanic unit in the Mesoproterozoic Sinclair Supergroup of southern...Malobela, B. Mapani and M. Harris Department of Geology, University of Namibia, 340 Mandume Ndemufayo Avenue...mharris@unam.na D.H. Cornell, Department of Earth Sciences, University of Gothenburg, P.O. Box 460, Gothenburg...Department of Earth Sciences, Stellenbosch University, Private Bag X1, 7602 Matieland, South Africa e-mail:...cornell@gvc.gu.se A. Karlsson Department of Earth Sciences, University of Gothenburg, P.O. Box 460, Gothenburg |
|
