 | Jaguin, Justine, Boulvais, Philippe, Poujol, Marc, Bosse, Valérie, 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 3.09–2.97 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 (Béziat et al., 2008), in Australia (Witt, 1992), and in the Murchison Greenstone Belt |  | | 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 world’s 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, |  | | Book (edition) | | Southern Africa a Collector’s Guide ■ Rocks, Minerals and Gemstones of Southern Africa & — - ... T ~ '' .rats en&nes L of Southern Africa A Collector’s Guide - Struik Publishers (an operating...suggestions and advice. Author’s 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) | | 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 ‘handbook 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; |  | 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 U–Pb and Pb–Pb 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 U–Pb and Pb–Pb...97 Ga Murchison Greenstone Belt is an important metallotect in the northern Kaapvaal Craton (South Africa)...Au–Sb and the Cu–Zn 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 |  | | 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 world’s largest Hg deposit, the Almadén district of central Spain, is representative of concentrations...reworking of the mercury-hosting rocks of the Almadén district (primary mineralization 427–380 Ma) led to at...west-central California. This important mining district, including the New Almadén 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) | | 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 Muzo 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 |  | | Report (issue) | | Australia Dermot Henry Page 78 Beryl from Southern Africa Bruce Cairncross Page 84 Brazilian Beryl Luiz Menezes...It occurs in magnificent crystals and in a wide range of beautiful colors, the more common of which have...·pH2 O, where R+ represents the alkali ions; n can range from O to 1; and p from 0.2 to 0.8. Feklichev (1963)...lengths of 3 meters, as have those at Tin Mountain, South Dakota. 4m: Beryl crystals have reached 4 meters...weighed almost 24 tons. 8.7m: In Jackalswater, South Africa, the largest beryl crystal recorded was 8.7 |  | | 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 |  | | Catalog/List | | RAINBOW OF AFRICA GEM & MINERAL COLLECTION Front Cover: Gems from the Rainbow of Africa Collection... Heritage Signature® Auction #5236 The Rainbow of Africa Collection Gems & Minerals October 15, 2015 | New...Signature® Internet Session 2 Heritage Auctions Design District Annex 1518 Slocum Street • 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 |  | | 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 | | ..... 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) | | temperatures of 340 °C (average 290±25 °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...1999; Kouzmanov etal. 2002; Lindaas et al. 2002), hematite and hausmannite (Lüders et al. 1999). Stibnite |  | | Journal (article/letter/editorial) | | 1993). with magnetite, e.g.,in the Murchison antimony belt, South Africa(Pearton andViljoen,1986). Mineral...andthe conditions of deposition. fromthe Seiniijoka district,Finland(Borodaev et al., 1983), Stibnite,ashasalreadybeennoted...andtheAlpha-Gravelotte mine,South Interestingly, theprincipal mineral associations onthedeposit Africa (Abbot...sericite, barite, fluorite, kaolinitc, and Murchison, South Africa Boococket al. (1988) Silica-carbonate...Nativeantimony or gudmundite dominant Seiniijoki district,Finland PiiakkOnen (1966),Balitsky et al. (1976) |  | | 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 |  | 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...Limited’s Goal Net property, in the Finlayson Lake district of southeastern Yukon (61°16.6'N, 130°35.5'W,...axial planar to tight with respect to isoclinal, south-vergent, outcrop-scale folds that are imposed on...prominent foliation are several Ar–Ar 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 |  | Mills, S. J., Kolitsch, U., Miyawaki, R., Groat, L. A., Poirier, G. (2009) Joëlbruggerite, Pb3Zn3(Sb5+,Te6+)As2O13(OH,O), the Sb5+ analog of dugganite, from the Black Pine mine, Montana. American Mineralogist, 94 (7) 1012-1017 doi:10.2138/am.2009.3141 | Journal (article/letter/editorial) | | (e.g., for Sb, Consolidated Murchison mine near Gravelotte, South Africa—Yager 2007; for Te, Cripple...specimen is preserved in the Department of Mineralogy, South Australian Museum (G32400), with the cotype specimen...microprobe analyses of joëlbruggerite* Constituent wt% Range Std. dev. Probe standard ZnO 15.98 14.1–16.94 1...49.45–53.47 1.60 Galena FeO 0.97 0.28–2.71 1.01 Hematite 0.70 0.5–1.02 0.19 Albite SiO2 5.78 5.19–6.09... 0.03 × 0.03 × 0.02 mm 59.84° 2θmax Reflection range –11 ≤ h ≤ 11; –11 ≤ k ≤ 10; –4 ≤ l ≤ 7 Total no |  | | Book (edition) | | known to occur with compo itions over the entire range. The statement •·compare with ... •• 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 |  | | Journal (issue) | | .......................... 269 EMERALDS IN SoUTH AFRICA ............... :.................................................. AM0SITE OCCURRENCE IN SOUTH AFRICA ..............................................plans to spend one week of this period in the sunny south as a guest of Mr. and Mrs. Horace W . Slocum, of...in the township of Strafford, the first on the south peak of Percy Peaks and the other, in a drift on...r c y Quadrangle is north of the President 191 Range and has a number of peaks over 3,000 feet high, |  | Hazen, R. M., Bekker, A., Bish, D. L., Bleeker, W., Downs, R. T., Farquhar, J., Ferry, J. M., Grew, E. S., Knoll, A. H., Papineau, D., Ralph, J. P., Sverjensky, D. A., Valley, J. W. (2011) Needs and opportunities in mineral evolution research. American Mineralogist, 96 (7) 953-963 doi:10.2138/am.2011.3725 | Journal (article/letter/editorial) | | resource will incorporate software to correlate a range of mineral occurrences and properties vs. time,...minerals from numerous localities; and (3) to pose a range of unanswered questions related to Earth’s changing...In the case of sulfur isotopes, changes in the range of δ34S values with time have been linked to the...Schroeder et al. 2008). Temporal changes in the range of ∆33S (≈δ33S – 0.515δ34S) have been tied to changes...permil of zero, combined with an expansion in the range of variability for δ34S, is interpreted to reflect |  | | Journal (issue) | | - D M Brady, Scottish - B Jackson, South East - C H Winter, South West - R M Slater Examiners: A J Allnutt...herein. N. nodosus is found in the seas off the south-eastern USA to Brazil and N. subnodosus in the seas... round, off-round or baroque, while the colour range has been variously described as white to deep royal...materials identified by LA ICPMS. Na Mg B P K Mn Sr Ba Lion's Paw P. maxima P. margaritifera (Pacific)...Conch pearls Webster (Webster, 1994) gave an SG range of 2.81 to 2.87. From this it has been suggested |  | | 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...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...conducted at the University of the Witwatersrand, South Africa. Petrographic and mineralogic characteristics |  | | Journal (article/letter/editorial) | | Witwatersrand, Private Bag 3, WITS 2050, Johannesburg, South Africa P. J. MURPHY,** Raman-Luminescence Laboratory...Witwatersrand, Private Bag 3, WITS 2050, Johannesburg, South Africa AND L. J. ROBB* Department of Geology, University...Witwatersrand, Private Bag 3, WITS 2050, Johannesburg, South Africa Abstract Fluid inclusions in vein quartz from...NaCl equiv. Their bulk densities fall in a major range from 0.62 to 1.11 g/cm3. Type 2 inclusions show...Witwatersrand, Private Bag 3, WITS 2050, Johannesburg, South Africa. **Present address: Centre for Earth and Environmental |
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