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| Geological Society of Zimbabwe G Z S Newsletter October 2015 No. 3 of 3 of 2015 Heavy mineral concentrate...(Total weight 4.974g) from the Somabula alluvial deposit. One diamond crystal (octahedron/dodecahedron)...alexandrite, sapphires, garnet, amethyst, topaz (“Somabula blue” and white), aquamarine, boart and native...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 .............................. |
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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...Although conglomerate units occur throughout the Somabula Karoo succession, the diamonds and associated...with a basal diamond-bearing conglomerate occurs approximately 20 km to the southwest of Gweru, in the Somabula |
 | Oberthur, T., Weiser, T. W., Gast, L., Schoenberg, R., Davis, D. W. (2002) PLATINUM-GROUP MINERALS AND OTHER DETRITAL COMPONENTS IN THE KAROO-AGE SOMABULA GRAVELS, GWERU, ZIMBABWE. The Canadian Mineralogist, 40 (2) 435-456 doi:10.2113/gscanmin.40.2.435 | Journal (article/letter/editorial) |
| DETRITAL COMPONENTS IN THE KAROO-AGE SOMABULA GRAVELS, GWERU, ZIMBABWE THOMAS OBERTHÜR§ Bundesanstalt für...from a recent exploration campaign for diamond in the Somabula gravels, a paleoplacer of Upper Karoo (Triassic...~200 Ma) age near Gweru, Zimbabwe. The polymict spectrum of heavy minerals in the Somabula placers comprises...derived from late Archean greenstone belts of the Zimbabwe craton. Keywords: zircon, monazite, tantalite...isotopes, paleoplacer, Karoo Formation, Somabula gravels, Gweru, Zimbabwe. SOMMAIRE Nous avons étudié des concentrés |
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| BRODERICK .\W^ D. PI.OWES 65 Landscape evolution in Zimbabwe from the Permian to present, with implications...Grahanistown. Somabula Explorations (Pvt.) Limited, Box CH399. Chisipite. Harare. Zimbabwe. e-mail: andy...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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| Geological Society of Zimbabwe Newsletter June, 2007 Geological Society of Zimbabwe Newsletter June 2007...SOCIETY OF ZIMBABWE, P.O. BOX CY 1719, CAUSEWAY, HARARE Geological Society of Zimbabwe Newsletter ...Department, University of Zimbabwe ………………………………………. 22 The Geological Survey of Zimbabwe …………………………………………………...…………………………………………………… …. 31 2 Geological Society of Zimbabwe Newsletter June, 2007 Editorial At last we have...collective predicament as geologists and miners in Zimbabwe, 2007. Let us take note and work towards solving |
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| Geological Society of Zimbabwe G Z S Newsletter February 2016 No. 1 of 3 of 2016 Faceted round brilliant...brilliant cut Marange diamond; 8.14mm diameter. Brown colour with a few visible channel inclusions. Photographed...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. Part 2. ........................ 6 16 NEWS Geology Department, University of Zimbabwe – Maideyi Meck …………… The Professor Tom Blenkinsop |
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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...watershed. The ilmenite geochemistry eliminates other Zimbabwe Kimberlites as potential sources of these pathfinder...The inner drainage divide (the Ovambo-Kalahari-Zimbabwe or OKZ Axis) was initiated in the late Palaeogene...EVOLUTION OF THE ZAMBEZI-LIMPOPO WATERSHED, CENTRAL ZIMBABWE Figure 1. SRTM digital elevation image for southern |
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| 2,3 R. E. Ernst,4,5,† and Zh.Yu. Druzhinina3 1 Diamond 2 and Precious Metal Geology Institute (DPMGI)...of the platform there are also compound Au-Pt-diamond placers (Fig. 1, placers 1–3) from which not only...(right tributaries of the Anabar River) there are diamond-bearing placers, also with Au and Pt (Fig. 3G)...Rudnick and Walker, 2009) these compound Au-Pt-diamond placers are similar, fill the entire field of the...Os 92 D 16 4 Onoway Valley 4 Tulameen R. Somabula Karstovyi R. Makylgan 12 8 12 8 8 12 |
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| Geological Society of Zimbabwe Newsletter June, 2011 Geological Society of Zimbabwe 1960 -2010 G S Z...Newsletter June 2011 Tectonic evolution of the Zimbabwe Craton in the early Palaeoproterozoic. (a) Following...Following Söderlund et al. (2010), the Zimbabwe craton is positioned along the eastern margin of the Superior...basin initiated. (c) Assembly of the Kaapvaal and Zimbabwe cratons, and unknown terrane, Terra Incognita...Incognita at ca. 2.0 Ga led to tectonic escape of the Zimbabwe Craton and dextral shearing in the Limpopo Belt |
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| The Somabula Forest Diamond Field Southern Rhodesia M. C. B The Somabula Forest diamond placers are...of both ~the diamonds and these minerals. The "diamond field" lies some 10 miles south and west of Gwelo...workings. The oldest mine of importance in the Somabula area is the Shamrock Gold Mine to the north of...for gold led to the discovery of diamonds on the Somabula Spruit in 1Ç)03 by H. R. Moir and his brother...other minerals associated with the diamonds at Somabula might be expected. PRODUCTION Value £27,843 3 |
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| Pendleside Series examined in situ by us in this district. A few feet above the level of the road is a band...respect, to that observed throughout the North Midlands. The structure of the country is fairly indicated...complicated by the various faults that traverse the district. Both the palseontological and lithological sequence...Corals and Brachiopods) which occur throughout this district. Seminulaflcoides,Vaughan. This form characterises...100 feet of the Carboniferous Limestone of this district, as exposed at Hendre, Gwernymynydd, Pot Holes |
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| F. P. Mennell—The Somabula Diamond Field of Rhodesia. 4591 Quarries. Characteristic fossils: Amplexi-zaphrentis...be concluded in our next number.) IV.—THE SOMABULA DIAMOND FIELD OF KHODESIA. By F. P. MENNELL, F.G.S...new era in the history of _L the South African diamond deposits, inasmuch as rich bodies of diamantiferous...extension of area, but the centre of gravity of the diamond-mining industry seems to be gradually shifting...the opening up of the interesting deposit of the Somabula Forest, so far north of any other known occurrence |
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| “limonite”, quartz (Big Fish River, Canada); diamond (river sands, may be coincidental). Distribution:...Canoas and at Patrocínio de Sapucahy. At Somabula, Zimbabwe. From the Mrima Hill carbonatite, Kenya....River, near Dompim, Gold Coast. From the Oiyi district, Sierra Leone. In the Buffels River, Spektakel |
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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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| mining for gold in the valleys of the J_ Cariboo district of British Columbia has led to a careful investigation...barriers of Glacial age. VII.—PLATINUM METALS IN THE SOMABULA DIAHONDIFEROTJS GBAVELSBr H. B. MAUFE. Southern...Report No. 5, 1319. HE Somabula Diamondiferous Gravels which contain the diamond and numerous gemstones...occurrence of platinum in Southern Rhodesia, said: "The Somabula gravel for instance is a likely source, since...black goldbearing sands concentrated from the Somabula gravels apparently T Downloaded from https://www |
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| mining for gold in the valleys of the J_ Cariboo district of British Columbia has led to a careful investigation...barriers of Glacial age. VII.—PLATINUM METALS IN THE SOMABULA DIAHONDIFEROTJS GBAVELSBr H. B. MAUFE. Southern...Report No. 5, 1319. HE Somabula Diamondiferous Gravels which contain the diamond and numerous gemstones...occurrence of platinum in Southern Rhodesia, said: "The Somabula gravel for instance is a likely source, since...black goldbearing sands concentrated from the Somabula gravels apparently T Downloaded from https://www |
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| mining for gold in the valleys of the J_ Cariboo district of British Columbia has led to a careful investigation...barriers of Glacial age. VII.—PLATINUM METALS IN THE SOMABULA DIAHONDIFEROTJS GBAVELSBr H. B. MAUFE. Southern...Report No. 5, 1319. HE Somabula Diamondiferous Gravels which contain the diamond and numerous gemstones...occurrence of platinum in Southern Rhodesia, said: "The Somabula gravel for instance is a likely source, since...black goldbearing sands concentrated from the Somabula gravels apparently T Downloaded from https://www |
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| Sartorite by Dr. Trechmann. OOEEB8PO1TDENCE. THE SOMABULA DIAMOND FIELD. SIB,—I notice in your December issue...a comment by Dr. Flett on my paper on the Somabula Diamond Field, and I take this opportunity of expressing... It is significant, for instance, that though diamond is almost exactly of the same specific gravity...to the abundance or even to the presence of the diamond. The only mineral which shows indications of such...that my acquaintance with the literature of the diamond is more extensive than Dr. Flett's, in spite of |
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| interesting I Nalluvial diamond field which is situated on the borders of the Somabula Forest in Southern...the gravels, some ten miles away from the main Somabula workings, independently volunteered a similar...into such a hard and compact substance as the diamond may perhaps seem almost incredible, and it may...be faced, though it may be pointed out that the Somabula gravels are undoubtedly much older than even the...testify to their close resemblance to the darker Somabula stones. They differ, however, in the very important |
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| Ijebu Series, has so far been found only in that district of the Lagos Province. These beds are extensively...might truly include the schists of the entire district. Typical specimens of the granites, pegmatites...last-named showed 67'77 per cent, of iron-peroxide. The district is compared with the Oban Hills of the Eastern...Sartorite by Dr. Trechmann. OOEEB8PO1TDENCE. THE SOMABULA DIAMOND FIELD. SIB,—I notice in your December issue...a comment by Dr. Flett on my paper on the Somabula Diamond Field, and I take this opportunity of expressing |
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| Geological Society of Zimbabwe Newsletter June, 2009 Geological Society of Zimbabwe G Z S Newsletter...SOCIETY OF ZIMBABWE, P.O. BOX CY 1719, CAUSEWAY, HARARE Geological Society of Zimbabwe Newsletter ...of the Zimbabwe Craton …………………..……..………….... 9 Karoo Large Igneous Province, Botswana-Zimbabwe .........……………………….. Geology Department, University of Zimbabwe …………………………………….. Geological Survey Department...Committee, on behalf of the Geological Society of Zimbabwe, would like to offer a sincere vote of thanks |
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| ZIMBABWE GEOLOGICAL SURVEY BULLETIN No. 90 The Erosion Surfaces of Zimbabwe L. A. LISTER, M.Sc., D.Phil...LIBRASÏ ZU - 06.01 Ölungen ïte Cstteilands 72& ZIMBABWE GEOLOGICAL SURVEY BULLETIN No. 90 iSRiC LIBRARY...Wagentngen, The Netherlands The Erosion Surfaces of Zimbabwe L. A. LISTER, M.Sc, D.Phil. ISSUED BY AUTHORITY...the erosion surfaces of Zimbabwe. She has lectured at the University of Zimbabwe since 1963 and this Bulletin...earlier authors had postulated. Cainozoic tilting in Zimbabwe, which raised the eastern margin of the country |
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| Geological Society of Zimbabwe Newsletter June, 2010 Geological Society of Zimbabwe G Z S Newsletter...SOCIETY OF ZIMBABWE, P.O. BOX CY 1719, CAUSEWAY, HARARE Geological Society of Zimbabwe Newsletter ...for 2009 ……………………………………… Landscape Evolution in Zimbabwe from the Permian to present, with implications...……………….. 16 Geology Department, University of Zimbabwe ……………………………………… 16 Geological Survey Department...………………………………………………… 25 2 Geological Society of Zimbabwe Newsletter June, 2010 Editorial As we present |
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| 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...sequence. I t is in the somewhat remote Lomagundi district that these beds have attracted most attention...beds in the course of two lengthy visits to the district, and have recently paid i I have to express my...present day, which are intrusive. In the Abercorn district, also in Northern ]Kashonaland, and possibly on |
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| phonolite at Maid Gharian, near Tripoli. THE SOMABULA DIAMOXD FIELD. SIB,—Some months ago Sir John Willoughby...plans, to illustrate the geology of the Rhodesian diamond fields. These are now on exhibition on the main...Mr. Mennell and given in his paper on the Somabula diamond field in the October number of the GEOLOGICAL...minerals I have seen resembles those of the Kimberley diamond pipes. JOHN S. FLBTT. THE TRIMINGHAM CHALK. SIR |
