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| Geological Society of Zimbabwe G Z S Newsletter October 2015 No. 3 of 3 of 2015 Heavy mineral concentrate...974g) from the Somabula alluvial deposit. One diamond crystal (octahedron/dodecahedron) of gem quality...Society of Zimbabwe, P.O. Box CY 1719, Causeway, Harare Geological Society of Zimbabwe Newsletter ... ARTICLES AND REPORTS A Review of Diamonds in Zimbabwe – a Century On .................................11 12 NEWS Geology Department, University of Zimbabwe – Maideyi Meck ……………… The Professor Tom Blenkinsop |
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| however, and it is only in places, towards the north, that we find areas of crystalline schists, associated...probably as large and as interesting as that of North America itself. During the past eight years I have... few of the intensely sheared rocks of such a district, except very locally--a few yards, for instance...Rifle Kopje, near Bulawayo; Red Hills, Victoria district). In other cases they occur as well-marked dykes...along the easter1~ border of the province of Matabeleland, from Gwelo to the Umniati River. Each separate |
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| EVOLUTION OF THE ZAMBEZI-LIMPOPO WATERSHED, CENTRAL ZIMBABWE A.E. MOORE African Queen Mines Ltd., Box 66 Maun...Zambezi-Limpopo drainage divide in the vicinity of Bulawayo, Zimbabwe, led to the recovery of a suite of ilmenites with...found in the early Palaeozoic Colossus kimberlite, which is located to the north of the modern watershed.... The ilmenite geochemistry eliminates other Zimbabwe Kimberlites as potential sources of these pathfinder...initial locus of flexure located to the north of the Colossus, resulting in the dispersal of ilmenites |
 | Tychkov, Nikolay S., Agashev, Alexey M., Pokhilenko, Nikolay P., Tsykh, Vladimir A., Sobolev, Nikolay V. (2020) Types of Xenogenic Olivine from Siberian Kimberlites. Minerals, 10 (4) 302 doi:10.3390/min10040302 | Journal (article/letter/editorial) |
| prospecting problems and assessment of kimberlite diamond grade. In connection with this aim, a number of...closely located Jurassic kimberlite bodies in the north of the Siberian Platform. Section 6, “Composition...identifying bodies, and evaluating potential kimberlite diamond grade. 2. Materials and Methods Olivines from four...fund of the Laboratory of Lithospheric Mantle and Diamond Deposits of the Institute of Geology and Mineralogy...peridotite xenoliths from twelve kimberlites of the North American, South African, and Siberian cratons [22 |
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| ancestry for the Somabula diamond-bearing alluvial deposit, Central Zimbabwe Andy Moore Somabula Explorations...Explorations (Pvt) Limited, Box CH399, Chisipite, Harare, Zimbabwe. e-mail: andy.moore@info.bw John Moore Geology...Karoo-age diamond-bearing conglomerates, located to the southwest of Gweru in central Zimbabwe, have long...linear outcrop of Karoo sediments with a basal diamond-bearing conglomerate occurs approximately 20 km...southwest of Gweru, in the Somabula district in central Zimbabwe (Figures 1 and 2). The diamonds were |
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| and Mobile-Belt Environments from Zimbabwe and Implications for Diamond Potential a Peter R. Hildebrand...and Mobile-Belt Environments from Zimbabwe and Implications for Diamond Potential, International Geology...and Mobile-Belt Environments from Zimbabwe and Implications for Diamond Potential PETER R. HILDEBRAND Department...different tectonic settings illustrate the diamond potential of Zimbabwe. These are regions that kimberlites...craton should have a thick mantle root with some diamond potential. This mantle lithosphere is less diamondiferous |
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| and early Proterozoic Colossus kimberlites, located on the Kaapvaal and Zimbabwe cratons, respectively...olivines; Cr-poor megacrysts; Cr-rich T megacrysts; Colossus, Monastery. IP 1. Introduction SC R Olivine...the Hamilton Branch and Ison Creek kimberlites in north America (Moore, 1988). It is also documented in...with the megacrysts (Moore, 1988, 2012). NU The Colossus kimberlite, dated at 532.5 Ma (Phillips, 1999)...some 50km to the northeast of Bulawayo on the Zimbabwe Craton (Fig. 3), is also noted for an MA abundance |
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| Somabula Forest Diamond Field Southern Rhodesia M. C. B The Somabula Forest diamond placers are not...minerals. The "diamond field" lies some 10 miles south and west of Gwelo and extends west and north from Willoughby...deposits are between the Ngamo and Gwelo rivers to the north and the Vungu river to the south. Diamondiferous...the close of 1893 Bulawayo was occupied and Matabeleland added to the British South Africa Company's...in the old workings. It is said that every gold mine worked to date in Southern Rhodesia was located |
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| Earth and Planetary Sciences, Macquarie University, North Ryde, 2109 NSW, NU Australia MA email: andrea...volatiles (CO2 ± H2O) that originate within the diamond stability field (>150 km). They occur as volcanic...to its abundance, can be employed to estimate diamond distribution in kimberlites (e.g., Harvey et al...olivine in eight kimberlites from southern Africa and north America of Moore (1988) confirmed that the rims...analyses of olivine grains from the SC Colossus kimberlite (Zimbabwe; Moore and Costin, 2016), where 115 |
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| Geological Society of Zimbabwe Newsletter February, 2012 Geological Society of Zimbabwe G Z S Newsletter...Society of Zimbabwe, P.O. Box CY 1719, Causeway, Harare 1 Geological Society of Zimbabwe Newsletter...Central Zimbabwe Watershed .....……… Integrated Exploration on Coal Project in southern Zimbabwe ………………...practice in Zimbabwe ………………………………… 10 10 12 12 13 13 NEWS Geology Department, University of Zimbabwe …………………………………...Committee, on behalf of the Geological Society of Zimbabwe, would like to offer a sincere vote of thanks |
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| Department of Geology, University of Zimbabwe, Harare (Zimbabwe) B.P.I. Geophysics, University of the...Monastery ; 3 = Goadgevonden ; 4 = Beit Bridge; 5 = Colossus; 6 = Kao ; 7 = Jagersfontein; 8 = New Elands ;...certainly Precambrian, and three (Goedgevonden, Colossus and Beit Bridge) offer no Phanerozoic geological...have been determined on samples from the Wesselton Mine (Allsopp and Barrett, 1975) and Bultfontein (Kramers...W.R. "0" Beit Bridge leach total residue "e" Colossus leach total residue "e" 0.21 1.2 9.7 0.61 2 |
 | Phillips, David, Harris, Jeffrey W., de Wit, Michiel C. J., Matchan, Erin L. (2018) Provenance history of detrital diamond deposits, West Coast of Namaqualand, South Africa. Mineralogy and Petrology, 112. 259-273 doi:10.1007/s00710-018-0568-9 | Journal (article/letter/editorial) |
| ORIGINAL PAPER Provenance history of detrital diamond deposits, West Coast of Namaqualand, South Africa...Namaqualand in South Africa hosts extensive detrital diamond deposits, but considerable debate exists as to...be used to constrain the provenance of placer diamond deposits. In the current study, 40Ar/39Ar analyses... forming additional placer deposits. Keywords Diamond . Kimberlite . 40Ar/39Ar . Provenance Introduction...is host to the world’s largest known detrital diamond deposits (Fig. 1). Together these deposits have |
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| inclusions in diamonds from the River Ranch kimberlite, Zimbabwe Received: 11 January 1995 / Accepted: 10 June...pipe in the Late Archean Limpopo Mobile Belt (Zimbabwe), are phases of harzburgitic paragenesis, namely...orthopyroxene (Mg# = 93), G10 garnets and chromites. The diamond inclusion (DI) chemistry demonstrates a limited...and garnet are more Mg-rich. Most River Ranch diamond inclusions were equilibrated at T = 1080± 1320...and its proximity to Late Archean oceans. Like diamond inclusions from all other kimberlites studied, |
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| s ev i e r. c o m / l o c a t e / l i t h o s Diamond provenance studies from 40Ar/39Ar dating of clinopyroxene...Available online 6 June 2009 Keywords: 40 Ar/39Ar Diamond Clinopyroxene inclusion Provenance Kimberlite Namibia...coast of Namibia is host to substantive detrital diamond deposits located in onshore and offshore beach...diffusion of argon to lattice defect sites and the diamond/inclusion interface region during mantle residence...loss of the latter component on cleaving of the diamond to release the inclusion(s). In this study, we |
 | Sarkar, Chiranjeeb, Kjarsgaard, Bruce A., Pearson, D. Graham, Heaman, Larry M., Locock, Andrew J., Armstrong, John P. (2018) Geochronology, classification and mantle source characteristics of kimberlites and related rocks from the Rae Craton, Melville Peninsula, Nunavut, Canada. Mineralogy and Petrology, 112. 653-672 doi:10.1007/s00710-018-0632-5 | Journal (article/letter/editorial) |
| studies have been conducted on recently found diamond-bearing kimberlitic and related rocks in the Rae...Craton at Aviat and Qilalugaq, Melville Peninsula, north-east Canada. Magmatic rocks from the Aviat pipes...magmatic rocks observed from the nearby north–eastern North America and Western Greenland. The ultimate...Street, Ottawa, ON K1A 0E8, Canada 3 Lucara Diamond, Vancouver V6C 3E8, Canada Kimberlites are small–volume...that occur in virtually every craton worldwide. North America has several Archean cratons containing kimberlite |
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| (1980) and Kairezi Resources (now SRK Zimbabwe) after Zimbabwe Geological 1: 1 000 000 (1994). SOUTH...OF KIMBERLITES AND RELATED ROCKS Kaapvaal and Zimbabwe cratons and intervening Limpopo orogenic belt...collectively host a spectrum of igneous and metamorphic diamond xenocrysts ranging in age from Paleoproterozoic... 2001). Most kimberlites in Africa (and indeed North America, Brazil and Siberia) are of mid-Cretaceous...1972; Sykes, 1978). In South Africa, Botswana and Zimbabwe, no such links are obvious between kimberlite |
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| west. In contrast, all suites examined from the Zimbabwe Craton, as well as the Premier kimberlite cluster...Cluster Kimberlite Age This study KIMBERLITES 1. Colossus 2. Venetia 3. Orapa 4. Jwaneng 5. Palmietfontein...Pofadder 18. Warmbad 19. Gibeon 25. Barkly West Colossus 532 Venetia 519 River Ranch Orapa AK1 93 Letlhakane...those from Lesotho, situated about 150km to the north. This observation extends to the P-T controlled...(Kroonstad and Theunissen clusters) and Swartruggens (North West Province) display similar, highly coherent |
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| ___ . _....... _. _. _____ .... ______ 83 Colossus mine ___ ..... _o ••• _ • • • • • • • • • • • ••...Blackmon mine._ ... ___ •.......... _..... __ ....... .............. 92 Kings Mountain mine __ ___ ....94 Ferguson mine .....•............. _........ _. __ ___ . __ .. __ . ___ . _ 96 Brown mine ____ . __ ...·schlegelmilch mine .. _. _____ ____ .... ___ ......... _... __ ... . . . . . . . 101 Thompson mine. _ .. ___...West mine ____ . _. _____ . _. _.. _.. __ .. _...... ~ __ . __ .... ·. . . . . . 104 Nott mine __ . ______ |
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| Meredith expertly shows how the exigencies of the diamond (and then gold) rush laid the foundation for apartheid...Meredith intertwines and exposes the roles of diamond titan Cecil Rhodes and Boer leader Paul Kruger... The Past Is Another Country: Rhodesia—UDI to Zimbabwe The First Dance of Freedom: Black Africa in the...Africa Mugabe: Power, Plunder, and the Struggle for Zimbabwe The Fate of Africa: A History of Fifty Years of...Introduction xii–xiii xv 1 PA RT I 1. 2. 3. 4. 5. Diamond Fever Blue Ground Kimberley The Diggers’ Revolt |
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| Coast. DIAMONDS: FROM BIRTH TO ETERNITY A diamond is rarely found embedded in kimberlite rock. This...update its diamond mining and reeovery inlormation, we asked the assistance ol John Roux, Diamond Information...to present Arthur Wilson’s compilation on the diamond and its origins. Richard T. Liddicoat, Jr. CONTENTS... 413 Index . 449 i\ LIST OF ILLUSTRATIONS Diamond (Color Plate).Frontispiece Lord Rutherford. 4 Radiometric...Radiometric dating. 5 Hannay's experiment. 11 Graphite-diamond equilibrium . 13 Convection cells . 15 Snider-Pelligrini |
 | Berni, G. V., Heinrich, C. A., Lobato, L. M., Wall, V. J., Rosiere, C. A., Freitas, M. A. (2014) The Serra Pelada Au-Pd-Pt Deposit, Carajas, Brazil: Geochemistry, Mineralogy, and Zoning of Hydrothermal Alteration. Economic Geology, 109 (7) 1883-1899 doi:10.2113/econgeo.109.7.1883 | Journal (article/letter/editorial) |
| Antônio Carlos, 6627, Belo Horizonte, Brazil 4 Colossus Minerals Inc., The Exchange Tower, 130 King Street...containing 4,630 ppm Au, 1,730 ppm Pd, 1,600 ppm Pt; Colossus Minerals Inc., 2011) but is characterized by a...(COOMIGASP). A joint venture with the Canadian company Colossus Minerals Inc. started a new evaluation of the...Pelada area includes geologic descriptions of the mine sequence (Jorge João et al., 1982; Meireles et al...and an upper metasandstone sequence (Fig. 2). The mine sequence at the Serra Pelada deposit (Fig. 3) overlies |
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| kimberlite magmatism in North America: implications for global kimberlite genesis and diamond exploration L.M...kimberlite emplacement patterns can be recognized in North America: (1) a northeast Eocambrian/Cambrian Labrador...kimberlites from the Slave and Wyoming cratons of western North America. Within the Type 3 Slave craton, at least...compilation of robust kimberlite emplacement ages from North America, southern Africa and Russia indicates that...kimberlite activity, there is a good correlation between North America and Yakutia for three distinct short-duration |
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| 85468 151 5 £2.50 | y VO0 4"<\ iii The DIAMOND DIGGERS South Africa 1866 to the 1970's BOOKS...documentaries TELEVISION Hyperion VOR HERBERT The Diamond Diggers South Africa 1866 to the 1970's eS Tom... Baby Jacobs’ peculiar Pebble The Making of a Diamond 16 The lure of Famed Diamonds The Rush to the... 14 15 16 17 18 i 20 The German Diamond Fields The Union Diamond Board The third Great Man in Diamonds...Artificial Diamonds A look around the new Finsch Mine Diamond in Action, and for Girls BIBLIOGRAPHY INDEX |
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| BRODERICK .\W^ D. PI.OWES 65 Landscape evolution in Zimbabwe from the Permian to present, with implications...(Pvt.) Limited, Box CH399. Chisipite. Harare. Zimbabwe. e-mail: andy.m()ore@info.b\v F.P.D. (Woody)...Broderick 19 Jenkinson Road, Chisipite, Harare. Zimbabwe e-mail: makari@zol.co.zw D. Plowes 49 Arcadia...is presented to model drainage evolution -Acmss Zimbabwe since ihe Fenniiin. TÍii.s provides the framework...to the nortii and south oí' the modern central Zimbabwe watershed, wliich separates the Zambezi and Limpopo |
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| Hypabyssal B.C. Hearn Coopersmith et al. (2003) Colossus Zimbabwe Hypabyssal Miller Museum Allsopp et al...Smith et al. (1995) Reid et al. (1975) in gold mine Igwisi Hills Tanzania, Africa Volcanoclastic...Hypabyssal D. Schulze Schulze (2001) Leicester Mine Barkly West, SA Hypabyssal D. Schulze Schulze...Dike D. Schulze Hunter et al. (1984) Monastery Mine Free State, SA Hypabyssal D. Schulze Whitelock...CA Dike L. Godin Arima & Kerrien (1988) Rex Mine (II) Free State, SA Hypabyssal D. Schulze Hill |
