| Jaguin, Justine, Boulvais, Philippe, Poujol, Marc, Bosse, ValĆ©rie, Paquette, Jean-Louis, Vilbert, David (2013) Albitization in the Antimony Line, Murchison Greenstone Belt (Kaapvaal Craton): A geochemical and geochronological investigation. Lithos, 168. 124-143 doi:10.1016/j.lithos.2013.01.010 | Journal (article/letter/editorial) | com/locate/lithos Albitization in the Antimony Line, Murchison Greenstone Belt (Kaapvaal Craton): A geochemical...2013 Available online 14 February 2013 Keywords: Murchison Greenstone Belt Antimony Albitization Archean...Kaapvaal Craton a b s t r a c t The 3.09ā2.97 Ga Murchison Greenstone Belt is one of several Archean volcano-sedimentary...volcano-sedimentary belts within the Kaapvaal Craton in southern Africa. Among the diverse ore deposits found within the...in western Africa (BĆ©ziat et al., 2008), in Australia (Witt, 1992), and in the Murchison Greenstone Belt | | | Book (edition) | Southern Africa a Collectorās Guide ā Rocks, Minerals and Gemstones of Southern Africa & ā - ... T ~ '' .rats en&nes L of Southern Africa A Collectorās Guide - Struik Publishers (an operating...suggestions and advice. Authorās Preface Southern Africa has much to offer the amateur geologist, whatever...best plan is to take local advice wherever you are. 9 In small places try the local police station first...usually helpful and will know it there are any local gem clubs and how to get in touch with them. There | | | Journal (article/letter/editorial) | characteristics of emeralds from the Leydsdorp area, South Africa J.E. Lum, K.S. Viljoen and B. Cairncross Department...Johannesburg, P.O. Box 524, Auckland Park, 2006, South Africa. e-mail: jullieta.lum@gmail.com; fanusv@uj.ac...Society of South Africa Abstract The worldās oldest emerald deposit occurs in the Gravelotte-Leydsdorp...Gravelotte-Leydsdorp area of the Limpopo Province of South Africa. Emeralds have been mined from the main emerald working...and actinolite schists. While the surrounding Murchison greenstone belt has been extensively studied, | | | Journal (article/letter/editorial) | illustrating the nature of Archean volcanismin southern Africa and elsewhereare made available for purposesof...mineralization. The Archean mineralization of southern Africa is briefly compared and contrasted with that of...as of currentlycontributingthe mostdiversified range of mineral types and productsexploited in on the...the easternpart southern Africa. of Botswana, the northeasternsegment of South The purposes of this paperare...paperare, briefly,to consider Africa, and Rhodesia,the shield consistsof two crathe nature and distribution | | | Book (edition) | OF OF SOUTH AFRICA MINES GEOLOGICAL SURVEY MINERAL RESOURCES OF REPUBLIC OF THE SOUTH AFRICA...Second World War, and partly as a result of it, South Africa experienced vast industrial expansion. This...official āhandbook on the mineral resources of South Africa, it has become necessary to revise, or rather...great diversity and magnitude of South African mineral deposits and local mining operations, the Economic...Chamber of Mines of South Africa with Mr G. H. Grange as co-ordinator, and the South, African mining industry; | | | Journal (article/letter/editorial) | between the Zambian occurrences and those of South Africa and Zimbabwe. INTRODUCTION The emerald deposits... X Ć X X 28Ā° 0 10 20 Km SCALE L E GEND AFRICA \ Copperbelt ~Kafubu \ LEm.ml~L ~/'--I / Young...Company in the 1940's and Rio Tinto Mineral Search of Africa in the 1950's. Rio Tinto registered a mining location...others at Fibolele and FwayaFwaya were discovered by local inhabitants. These new discoveries led to prospecting...quartz, with accessory iron oxides, muscovite, rutile and schorl. Banding of probable tectonic origin | | Jaguin, J., Poujol, M., Boulvais, P., Robb, L. J., Paquette, J. L. (2012) Metallogeny of precious and base metal mineralization in the Murchison Greenstone Belt, South Africa: indications from UāPb and PbāPb geochronology. Mineralium Deposita, 47 (7) 739-747 doi:10.1007/s00126-012-0422-7 | Journal (article/letter/editorial) | base metal mineralization in the Murchison Greenstone Belt, South Africa: indications from UāPb and PbāPb...97 Ga Murchison Greenstone Belt is an important metallotect in the northern Kaapvaal Craton (South Africa)...AuāSb and the CuāZn VMS mineralization in the Murchison Editorial handling: H. Frimmel J. Jaguin (*) :...Department of Earth Sciences, University of Oxford, South Parks Road, Oxford OX1 3AN, UK J. L. Paquette UMR...Kaapvaal Craton . Murchison range . South Africa Introduction The 3.09 to 2.97 Ga Murchison Greenstone Belt | | Giuliani, Gaston, Groat, Lee A., Marshall, Dan, Fallick, Anthony E., Branquet, Yannick (2019) Emerald Deposits: A Review and Enhanced Classification. Minerals, 9 (2) 105 doi:10.3390/min9020105 | Journal (article/letter/editorial) | Precambrian series in Eastern Brazil, Eastern Africa, South Africa, Madagascar, India, and Australia, and younger...River; 16: Lened; 17. Tsa da Gliza. South Africa: 18. Gravelotte. Zimbabwe: 19. Sandawana, Masvingo,...spectraā. Quantitatively, Cr and V substitutions range between 25 [6] and 34,000 ppm [11] for Cr and from...[18], the Muzo mine in Colombia [1], the Mohmand district in Pakistan [1], and Eidswoll in Norway [13]....between 2 and 6 ppm, while Cr-V concentrations range between 100 and 1000 ppm. At the Coscuez emerald | | | Report (issue) | France Colombia: Gonzalo Jara of Bogota, Colombia Africa: Federico Pezzotta from the Natural History Museum...Giuliani Africa: Egypt, Nigeria, Tanzania, . . . . . . . . .52 Mozambique, Zambia, Zimbabwe, South Africa...before Columbus, emeralds were mined and traded in South America, which enjoys its own emerald tradition...zone in the MuzoĀ Coscuez-Pefias Blancas mining district. They are disseminated in black shales or albitized...emeralds must undertake adventurous trips to Africa, Asia or South America. In the United States, the only | | | Journal (article/letter/editorial) | brief overview of South Africa's mineral industry: world context and changing local circumstances Received:...important South African mineral resources clearly demonstrates that, omitting hydrocarbon fuels, South Africa...PO Box 74883, Lynnwood Ridge, Pretoria 0040, South Africa and later the kimberlite pipes discovered at...1889, the forerunner of the Chamber of Mines of South Africa (COM), whose member companies were ultimately...opencast and underground mines and quarries in South Africa. Of these workings, 57 produced gold, 62 exploited | | Hazen, R. M., Golden, J., Downs, R. T., Hystad, G., Grew, E. S., Azzolini, D., Sverjensky, D. A. (2012) Mercury (Hg) mineral evolution: A mineralogical record of supercontinent assembly, changing ocean geochemistry, and the emerging terrestrial biosphere. American Mineralogist, 97 (7) 1013-1042 doi:10.2138/am.2012.3922 | Journal (article/letter/editorial) | 2005). The worldās largest Hg deposit, the AlmadĆ©n district of central Spain, is representative of concentrations...reworking of the mercury-hosting rocks of the AlmadĆ©n district (primary mineralization 427ā380 Ma) led to at...west-central California. This important mining district, including the New AlmadĆ©n mine in Santa Clara...in the literature. For example, the Hg mining district of Pike County, Arkansas, is hosted in Carboniferous...but we have been unable to find a reliable age range for the subsequent Hg mineralization. Several mercury | | | Report (issue) | SURVEY OF SOUTH AFRICA COUNCIL FOR GEOSCIENCE GEOLOGICAL SURVEY OF SOUTH AFRICA MINERALOGY OF SOUTH AFRICA:... COUNCIL FOR GEOSCIENCE GEOLOGICAL SURVEY OF SOUTH AFRICA Scientific Editor R.D. Dixon Linguistic and...Council for Geoscience (Geological Survey of South Africa), 280 Pretoria Street, Silverton, Pretoria or........................... 69 5.1 Overview of South African Occurrences ..............................LAYEREDSUITE,BUSHVELDCOMPLEX.... 111 MINERALOGY OF SOUTH AFRICA: TYPE-MINERAL SPECIES AND TYPE-MINERAL NAMES | | | Book (volume) | Papers and Discussions Volume I , I JOHANNESBURG SOUTH AFRICAN INSTITUTE OF MINING AND METALLURGY 1961... 01", ~TALLUf>iYY. Ā© Copyright 1961 by The South African Institute of Mining and Metallurgy Ext'racts...I (1v DEC 196f Printed in t!te Republic of South Africa by Hortors Limited, Johannesburg V r. 1 The...and n1anagement of the gold mining industry in South Africa -C. B. ANDERSON . . . . . . . . . page r J ... ( 2. The economy of the Union of South Africa-W. J. BusSCI-IAU 9 3. An introduction to the physical | | | Book | Jewelry, 146 Breastplate of the High Priest, 144 South America, Beryl in the Bible, 80 Emerald and 140...Derivations of Names and Portugal, 490 Republic of South Africa, Romania, 549 601 Yugoslavia, 485 Pakistan... 445 Greenland, India, 500 Republic, South West Africa 445 Ghana, Inner Somali 443 Germany...gemstone pebbles, is also known in from Colors range from paler varieties of beryl that accompany the...highly-esteemed, Tavernier went shipped from South America to to the Far East and on to suggest | | | Book (edition) | known to occur with compo itions over the entire range. The statement ā¢Ā·compare with ... ā¢ā¢ means that...Gennanium Gold Hafnium Helium Holmium Al Sb A As Ba Be Bi B Br Cd Ca C Ce Cs Cl Cr Co Cu Dy Er Eu F Gd... Meta/lurgical and Mineralogical Society o/ South Africa Journal of Chemical Phy ics Journal cif the...and Proceedings of the Royal Socief) 1 of Ne,v South Wales JPSJ Journal of rhe Physical Society of...Cand CSPG Pennskiye gubemskiye wdomo.sti (Perm district ga=elle) Pl,ilosopl,ical Maga=ine Periodico de | | Groat, L. A., Marshall, D. D., Giuliani, G., Murphy, D. C., Piercey, S. J., Jambor, J. L., Mortensen, J. K., Ercit, T. S., Gault, R. A., Mattey, D. P., Schwarz, D., Maluski, H., Wise, M. A., Wengzynowski, W., Eaton, D. W. (2002) MINERALOGICAL AND GEOCHEMICAL STUDY OF THE REGAL RIDGE EMERALD SHOWING, SOUTHEASTERN YUKON. The Canadian Mineralogist, 40 (5) 1313-1338 doi:10.2113/gscanmin.40.5.1313 | Journal (article/letter/editorial) | major occurrence of emerald in the Finlayson Lake district of southeastern Yukon. The Regal Ridge showing...Limitedās Goal Net property, in the Finlayson Lake district of southeastern Yukon (61Ā°16.6'N, 130Ā°35.5'W,...axial planar to tight with respect to isoclinal, south-vergent, outcrop-scale folds that are imposed on...prominent foliation are several ArāAr biotite ages that range from 109 to 113 Ma for the rocks in the area (Murphy...veins associated with the emerald mineralization range in width from approximately 0.5 to 1.0 m. At least | | | Journal (article/letter/editorial) | Witwatersrand, Private Bag 3, WITS 2050, Johannesburg, South Africa. E-mail: 065yyao@cosmos.wits.ac.za *Present...Witwatersrand, Private Bag 3, WITS 2050, Johannesberg, South Africa. ABSTRACT Granitoid-hosted gold deposits at...arsenopyrite, with minor chalcopyrite, sphalerite, and rutile. Hydrothermal alteration minerals are dominated...wt.% NaCl equivalent with bulk densities in the range 0.65 to 3 0.95 g/cm . The petrographic and microthermometric...Nhyiaso and Ayankyerim open pits, as well as the SOUTH AFRICAN JOURNAL OF GEOLOGY, 2000, VOLUME 103, PAGE | | | Book | Struik Nature (an imprint of Penguin Random House South Africa (Pty) Ltd) Reg. No. 1953/000441/07 The Estuaries...Century City, 7441 PO Box 1144, Cape Town, 8000 South Africa Visit www.randomstruik.co.za and join the Struik...published edition, 2015: Penguin Random House South Africa (Pty) Ltd Publisher: Pippa Parker Managing editor:...Hatfield Campus, University of Pretoria Pretoria, South Africa Dr Lynnette Greyling Department of Geological...Town Private Bag X3 Rondebosch 7701 Cape Town, South Africa Note: The authors and the publishers cannot | | | Book | ..... 58 3.2.7 Maranda J, Murchison belt, Northern Province, South Africa ........... 59 VIII Table................ 62 3 .2.8.1 Letneye, Dombarovsk District ....................................................... 62 3.2.8.2 Komsomolskoye, Mednogorsk District ...................................... 64 3.2.8.................... 65 3.2.8.6 Bakr-Tau, Baimak District, Bashkirian Republic ....................... 66............................ 68 3.2.9.3 Dry River South and Balcooma, North Queensland ................ | | | Journal (article/letter/editorial) | value of 11.3%) situate the deposit within the range characteristic of other granite-related emerald...of ĀÆuid inclusions allows us to characterize the range of pressure-temperature conditions of the Delbegetey...situated in the Charsky region, ~100 km to the south of Semeytau E. V. GAVRILENKO ET AL. FIG. 1. Location...greisen nests reach 0.5 m across, and the veinlets range from 5 to 20 cm thick. The largest emerald crystals...present work. All crystals have a prismatic habit and range from 3.4 EMERALDS FROM KAZAKHSTAN samples was | | | Journal (issue) | Branch: J. W. Franks, B.Sc., Ph.D., F.G.A. South Yorkshire & District Branch: J. L Platts, F.G.A. Examiners:...type of mica-coated rough that emanates from East Africa. Sometimes produced with obvious crystal form,...colour; as can be seen in Figure 15 the colours range from a distinct yellow through to brown. * * * A...033, all of which fall reasonably close to the range recorded by Dana. By way of confirming their identity...from U.S.A., recorded at room temperature in the range from 800 to 200 om (e-vibration parallel, a-vibration | | | Journal (article/letter/editorial) | temperatures of 340 Ā°C (average 290Ā±25 Ā°C), and a wide range of salinities between 0.2 and 23 eq. wt% NaCl. Aqueous-carbonic...Superior Province. In the Archean Murchison schist belt in South Africa, the famous Antimony line (Merensky...1978; Davies et al. 1986) contains the Alpha-Gravelotte, Beta-Jack Section, Athens and Monarch-Free State...described gold-antimony mineralization in the Kwekwe district within the Midlands greenstone belt. In the Yilgarn...5 m) quartz shear veins. All maļ¬c rocks display rutile (leucoxene) and pervasive, but variable, chloritization | | | Journal (article/letter/editorial) | mineralization at Gravelotte, Murchison Greenstone Belt, Northeast Transvaal, South Africa 89 J. E. NIELSON...MALLINSON: Origin and age of phosphorite from the south-central Florida Platform: Relation of phosphogenesis...E. K. PETERS:D-ā0 enriched waters of the Coast Range Mountains, northern California: Connate and ore-forming...and G. E. EXAFS spectroscopy study BROWN JR.: Local environment around gold (Ill) in aqueous chloride...expression P. M. SAGGER, J. SCHIJF. and H. J. W. DE BA-\R: Trace-metal Mediterranean distributions in | | | Catalog/List | RAINBOW OF AFRICA GEM & MINERAL COLLECTION Front Cover: Gems from the Rainbow of Africa Collection... Heritage SignatureĀ® Auction #5236 The Rainbow of Africa Collection Gems & Minerals October 15, 2015 | New...SignatureĀ® Internet Session 2 Heritage Auctions Design District Annex 1518 Slocum Street ā¢ Dallas, TX 75207 (HERITAGELive...RAINBOW OF AFRICA COLLECTION You have in front of you our presentation of the Rainbow of Africa Collection:...The mineral riches of Africa are not the only things making up the Rainbow of Africa Collection. For the | | | Journal (article/letter/editorial) | India, Madagascar, Namibia, Nigeria, Pakistan, South Africa, Spain, Tanzania, the United States, and Zimbabwe...Canada, the Muzo mine in Colombia, the Mohmand district in Pakistan, and Norway. Beryl has a wide stability...abandoned tin deposit near Emmaville in northern New South Wales in 1890 (compositions of Australian emeralds...al., 2002). Australia's most productive emerald district is a 10 km2 area around the village of Poona in...Mariinskoye (Gavrilenko et al., 2006). 127. South Africa, Transvaal (Kovaloff, 1928). 128. Tanzania (Gavrilenko |
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