 | | Journal (article/letter/editorial) | | Genmin, P.O. Box 61820, Marshalltown, 2107, South Africa (Received November 4, 1992; revised version...pyrophyllite-chloritoidmuscovite-chlorite-quartz-tourmaline-rutile-pyrite is found in most gold fields. Kaolinite...biotite, pyrrhotite and arsenopyrite have more local distribution. Pelites ("shales"), quartzites, meta-conglomerates...Dome, Johannesburg, and other important towns (Welkom, W; Klerksdorp, K; Carletonville, C; Randfontein...~ O K ~AR N M A , N,EEF .: :" K'M ERL REEF WELKOM SEQUENCE ELDORADO ". ' , FORMATION ...,. âą, " |  | | 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...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...$4.00 909 910 SCIENTIFIC COMMUNICATIONS tourmaline(composition betweendraviteandschorl, with ratiosofMg/(Mg |  | | 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 |  | | Journal (article/letter/editorial) | | University of the Witwatersrand, Wits, 2050, South Africa Abstract. Chloritoid and pyrophyllite occur...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...metasediments (e.g. Consolidated Modderfontein gold mine); minor pyrophyllite occurs near the margins of...following mines: Beatrix. Harmony, Unisel, St Helena, President Steyn, President Brand, Free State Saaiplaas |  | | Journal (article/letter/editorial) | | processes, temperature of the Earthâs surface, and state and composition of primary atmosphere at early stages...gneisses (âgray gneissesâ) detected, though in local sectors, virtually in all continents and ancient...Rand, (V) Carletonville, (VI) Klerksdorp, (VII) Welkom. (1â12) Major reefs developed in the western fields:...(7) Vaal, (8) Eldorado, (9) Andenk, (10) Beisa-Beatrix, (11) Basal (Steyn), (12) Commonage; (2â4) rock...In this connection, it is worth mentioning that South African geologists (Robb and Robb, 1998; Frimmel |  | | 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) | | photosynthesizers at around 3.0 Ga, the first âwhiffsâ 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...2890 â â â 2900 Ada May, Beisa, North, Main, South, Carbon Leader, Commonage Middelvlei Livingstone |  | | 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 |  | | Journal (article/letter/editorial) | | tantalumdepositsare restrictedto specificbelts in Africa and South America. INTRODUCTION COLUMBITE-TANTALITE...columbiumand tantalum rich parts of the crust in south-easternAfrica and America. Internal $tructure.--A...overwhelmingmajority indue to the frequencyof complexesin Africa was extrudedin volcanoes. Types oI CarbonatiteComplexes...faults or their intersections(Kaiserstuhl, Feia district), in or on the edge of rift-valleys. They are...severaloccurrences, as well as cassiterite,gold and tourmaline. The only depositsof pyrochlorein fenitesand |  | | Book (volume) | | British Columbia California Colorado Connecticut District of Columbia Delaware Department Florida Georgia...Wis. Wyo. Yukon 3 New Mexico Nova Scotia New South Wales Northern Territory Northwest Territories New...Pennsylvania Queensland Rhode Island South Australia South Carolina South Dakota Saskatchewan Tasmania Tennessee...(Wales) Aberdeen (Scotland) Aberdeen (South Africa : District) Aberdeen Angus cattle Aberdeenshire (Scotland)...aka 294.382 4 Abhidharmapitaka T2--669 45 Abia State (Nigeria) T2--666 8 Abidjan (Ivory Coast) 153.9 |  | | Book (volume) | | Socialist Republic N.T. N.Y. Neb. Nev. Scotia South Wales Northern Territory Northwest Territories ...Socialist Republic South Australia Ind. Indiana S.C. South Carolina Kan. S.D. South Dakota Ky. Kansas...Australia British Mich. N.J. N.M. Columbia District of Columbia New Hampshire New Jersey New Mexico...(Scotland) Aberdeen (South Africa T2- -429 27 T2- -412 35 : T2- -687 15 District) Aberdeen Angus cattle...Abiogenesis Abitibi (Quebec Regional County Municipality) T2- -666 8 371.254 153.93 371.26 658.311 25 |  | | Conference Proceedings (Volume) | | Cover photograph: View of the Aitik open pit copper mine in the very north of Sweden. Mining operations started...Heerenveen granites/pegmatites (Barberton area, South Africa): a possible source for the Dominion Reef quartz...of the pelitic schist in the Dufferin Lake Zone, south central Athabasca Basin, Saskatchewan, Canada ...through polycyclic orogeny: the example of the Litsa district, Russia Anne-Sylvie AndrĂ©-Mayer, Michel Cuney...mantle-crustal ore-forming systems of the Pechenga ore district (Fennoscandian shield) ..................... |  | | 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...famous Mesoarchean Witwatersrand Supergroup in South Africa that contains Earthâs largest gold-uranium deposits...post-depositional processes in uranium ores at the Stanleigh mine, Elliot Lake, Ontario, Canada.....................glacier-associated sediments of the Neoproterozoic of south China: Oceanic anoxia or sulfate limitation? .. |  | | Journal (issue) | | George R. Rossman and Richard L. Squires The Palermo Mine, New Hampshire..........................274 by Woodrow...Described Mineral From Siberia Found at the Getchell Mine, N ev ad a ....................290 by Gerald Jungles...postage paid at Bowie Md. SPODUM ENE, U rucupa mine, Itam bacuri, Minas Gerais, Brazil. Smithsonian...made ten purchasing trip s into Tanzania, Kenya, South A frica, Rhodesia, Eur ope, Brazil, Colum bia,...ariposa County, Calif.; Baja Calif., Mex.; and South A frica. Choice crystals, minerals and cut stones |  | | Report (issue) | | INrr~~Rl()R âą IJ Rlâ:1\ lJ lT () Iâ~ l\11 N lâ:s AFRICA *Algiers Tunis âą NISIA Tripoli Cairo* ALGERIA...Windhoek* Gaborone * Pretoria * Mbabane REPUBLIC OF SOUTH AFRIC1' \ Maputo * LESOTHO MAURITIUS (J Port... MINERALS YEARBOOK MINERAL INDUSTRIES OF r, AFRICA U.S. DEPARTMENT OF THE INTERIOR BUREAU OF MINES...reports and one world overview: Mineral Industries of Africa, Mineral Industries of Asia and the Pacific, Mineral...obtained from reports of the U.S. Department of State, from United Nations publications, and from the |  | | Journal (issue) | | North- West Branch: I. Knight, F. G .A. South Yorkshire & District Branch: I. R. M. Lewis, F.G.A. Examiners:...1981.] ZAMBIAN TOURMALINE By ARTHURE. THOMAS, F.G.A. Johannesburg In the past tourmaline from sources...academic interest. The tourmaline associated with the emerald occurrence at the Miku Mine was such a dark red...months however an interesting range of Zambian tourmaline has come onto the market. This material is alleged... The Aries mine in particular produced a quantity of light aquamarine and dark tourmaline. The first |  | | Book (edition) | | MINE andtheir LOCALITIES JAN H. BERNARD AND JAROSLAV HYRSL INERALS DESCRIBED SINCE 2004 MINERALS...dist., China Fluomatromicrolite, x 25111111, Naipa mine, Mozambique Daliranite, 5111111, Zarshouran Au-As...Domafov, Czech Rep. Juangodoyite, 60111111, Santa Rosa mine, Chile Back cover photo: Ho/fertile on hematite...piment pseudomo,phs after realga,; 75 mm, Palomo mine, Pen, Page 3: Stepite on arsenic, 45 111111,Jachymov...supergroup (Atencio et al., CM 48, 673-698, 2010), tourmaline supergroup (Henry et al., AM 96, 895-913, 2011) |  | Brandon, A., Aitkenhead, N., Crofts, R. G., Ellison, R. A., Evans, D. J., Riley, N. J. (1998) Geology of the country around Lancaster. British Geological Survey, London. | Book | | ntetbeddcd wac.:kestonc.::, paCk$tv11cand mudstone local limestone conglomerates ___ ,,___ --· 8-c.140 m...of the country around Lancaster The Lancaster district described in this 1ncmoir encompasses t:he heart...heart of the upland Bowland Fells in the south-east, a fringe of undulating rural country, including the...cornprehensive and general account of the geology of the district to be published, and is a synthesis of inany detailed...epoch of the Carboniferous. Sn1all inliers in the south-east reveal inuclstones and limestones laid down | | Brandon, A., Aitkenhead, N., Crofts, R. G., Ellison, R. A., Evans, D. J., Riley, N. J. (1998) Geology of the country around Lancaster. British Geological Survey, London. | Book | | Council GEOLOGICAL SUCCESSION IN THE LANCASTER DISTRICT Flandrian Hulocene Alluvium Allulial fan deposiL...in1erbeclded wackestone, packs ton e and muclstone local limc~toue conglomcrat~ 8-c.140 ,\.,b,an L r,111ck...of the country around Lancaster The Lancaster district described in Lhis n1emoir encompasses the heart...co1nprehensive and general account of the geology of the district to be published, and is a synLhesis of many detailed...epoch of the Carboniferous. Sn1all inliers in the south-east reveal i-nudstones and li1nestones laid down |  | | Journal (issue) | | North West - D M Scottish - B Jackson, South East - C H Winter, South West - R M Slater Brady, Examiners:...adventurous life, this 10 mm spray of acicular tourmaline crystals protogenetically embellished with microcrystals...Edward j GĂŒbelin and John I. Koivula at the Golconda Mine in Minas GĂ©rais, Brazil, during a field excursion...transformed into B aggregates. It was aggregation state of nitrogen to some degree; also notable that the...spectroscopy On treatment, changes in the aggregation state of nitrogen were observable; typically, B-aggregates |  | | Journal (article/letter/editorial) | | expected to be in a molten, partially vaporized state for the first thousand years after the giant impact...dissolved neodymium isotopes across the southern South Pacific KATHARINA PAHNKE*AND CHANDRANATH BASAK ...Germany (*correspondence: kpahnke@mpibremen.de) The South Pacific is an important area of bottom and intermediate...Despite its importance for the global ocean, the South Pacific is largely understudied with respect to...isotopes from 11 stations across the South Pacific between South America and New Zealand and between 46°S |  | | Journal (issue) | | North-West Branch:M. P. Gayton, F.G.A. South Yorkshire & District Branch: I. R. Lewis, F.G.A. Examiners:...S. GUNARATNE, F.G.A. Gemmologist-Chief Valuer, State Gem Corporation, Sri Lanka The heat-treatment of...process of burning rubies remains essentially a local adaptation. The stones are burnt embedded in an...The stones are also given a thick coating of a local paste prior to burning. In this process, two factors...for the colour mixture, the temperature of the local charcoal system is inadequate to bring about any |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | SINGAPORE - TORONTO This text is printed on acid-free paper. Copyright ©1997 by John Wiley & Sons, Inc...when mineralogy has close affiliation with solid-state physics, materials science, and inorganic chemistry...Smithsonian Inst., Washington, D.C. Alan Pring: South Australian Museum, Adelaide, SA, Australia. Gunnar...Norway. Richard J. Reeder: Dept. of Earth Sciences, State Univ. of N.Y., Stonybrook, NGY:. Louise Reif: U...10. India 11. South east Asia 12. Middle East 13. African Countries, from north to south 14. Oceania 15 |  | | Book | | Australia; Mr. Queen from Sc.D., LL.D., Ridgeway, Beatrix of drawings notable persons Newmanâs collection;...PAGE XXX.âTitaniteâ Topaz . âZircon XXXI. âTourmaline XXXII. âStones in XXXIII.âForms, and XXXIV...through the âThe goddess Stones stones In state. frequent allusions the stone, the vibrating...Priest. Urim and light, and the with this state- that the oracle ment. It was should only...amusement THE 30 relaxation or his scribe the State, âI will scribe, the of âthe green splash |  | | Book | | the material herein. This book is printed on acid-free paper. Printed in The Netherlands V DR.B.P. RADHAKRISHNA--AN...knowledge and understanding of the Archaean geology of South India. Among his pioneering works are studies of...well-preserved Archaean terrains, such as in the South Indian shield, and to build up and test models...Corporation. He was responsible for starting several state mining ventures to exploit chromite, vii iron...Department of Mines and Geology ot the Karnataka state as early as 1964. This cell has been playing a key |
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