 | | Report (issue) | | MINISTRY OF MINES Al'TD ENERGY GEOLOGICAL SURVEY NAMIBIA -jl i 1990 ,.1 Open File Report :MRS 09 -~I...MINISTRY OF MINES AND ENERGY GEOLOGICAL SURVEY NAMIBIA 1990 Open File Report MRS 09 2 Abstract A number...number of fluorite deposits occur in Namibia. These belong to the replacement-, vein- and breccia pipe...one is at Okorusu Fluorite Mine, a replacement-type deposit that is associated with the Okorusu Alkaline...56% CaF2. With the exception of the Garub Fluorite Mine, a breccia pipe deposit, all other fluorite occurrences |  | Cangelosi, Delia, Broom-Fendley, Sam, Banks, David, Morgan, Daniel, Yardley, Bruce (2020) Light rare earth element redistribution during hydrothermal alteration at the Okorusu carbonatite complex, Namibia. Mineralogical Magazine, 84 (1) 49-64 doi:10.1180/mgm.2019.54 | Journal (article/letter/editorial) | | during hydrothermal alteration at the Okorusu carbonatite complex, Namibia Delia Cangelosi a,*, Sam Broom-Fendley...7th May 2019 Abstract The Cretaceous Okorusu carbonatite, Namibia, includes diopside-bearing and pegmatitic...fluorite replaced the calcite carbonatites at Okorusu and resulted in extensive chemical change, suggesting...KEYWORDS: REE, carbonatite, hydrothermal transport, Okorusu. * ee12dac@leeds.ac.uk 1. Introduction The rare...metalsâ â metals which are sourced from a restricted region and have low substitutability and recyclability |  | | Journal (article/letter/editorial) | | an adventure of a lifetime. Spend two weeks in Namibia, a country of striking scenery, exotic animals...villages, and collected fluorite at the Okorusu mine near Otjiwarongo. We also spent two days in Etosha National...felt that additional days should be scheduled in Namibia to offset the time (and expense) spent on the long... Natural History Museum of Los Kakia, a diamond mine Angeles County manager for the Nam900 Exposition...their spouses, and four other friends. Our tour of Namibia and South Africa was now extended for a third week |  | | Report (volume) | | fluorspar have been worked in South Africa and Namibia. Stockworks of fluorspar in granite are mined extensively...reported from Angola, Kenya, Morocco, Mozambique, Namibia, South Africa, Tanzania, and Uganda. Fluorite has...carbonatites have been reported only in the Okorusu district of Namibia. Fluorspar production from Africa through...young rifts in eastern and central Africa, in Namibia (South West Africa), and in Angola and is associated...deposit of Namibia. Stockworks of fluorspar in granite are mined extensively at the Buffalo Mine in South |  | | Book | | Mountainland The Central Northern to Northwest Region including Damaraland The Central Namib Desertand...s Onganja Mine and Surrounding Copper Deposits The South The Pegmatitesin Central Namibia Luderitz and... Encyclopedia of the Mineralsof Namibia 443 Meteorites in Namibia Bibliography Index Photo credits...__ Republic of Namibia The President State House W°Ntdhoek FOREWORD Namibia is endowed with an...from near and far. Fine mineral specimen from Namibia are displayed in all the famous natural science |  | | Journal (article/letter/editorial) | | interbedded with the Etjo Formation, Northeast Namibia J.S. Marsh Department of Geology, Rhodes University...National Petroleum Corporation of Namibia, PB 13196, Windhoek, Namibia e-mail: roger@namcor.com.na D....sandstones south-southwest of Grootfontein in northeast Namibia. This indicates that the Early Jurassic Karoo flood...sequence extended from Botswana into northeast Namibia at least as far as 18 east and that this may mark...of the Etjo Formation of the Waterberg Plateau, Namibia with the Clarens Formation of the Karoo Sequence |  | | Journal (issue) | | Westcott copper mine, comprised three separate collecting sites in two short adits and the mine dump. Nearby...Nearby was the Badger Level section of the Huglith mine complex, which was our other location. We were too...a layby in the forestry surrounding the Huglith mine. When we did so later in the day there were some...more interesting of the. sites at the â˘Westcott mine, though a few good finds were made in the two ad...⢠⢠â˘, :. ⢠I Originally started as a copper mine in the latter part of the 1800s, the workin¡gs at |  | | Journal (article/letter/editorial) | | resources of anorogenic alkaline complexes in Namibia: A review F. Pirajno a a Geological Survey of...resources of anorogenic alkaline complexes in Namibia: A review, Australian Journal of Earth Sciences:...resources of anorogenic alkaline complexes in Namibia: A review F. PIRAJNO Downloaded by [Dalhousie...Plain Street, East Perth, WA 6004, Australia. In Namibia there are numerous anorogenic alkaline complexes...carbonatites, mineralization, Namibia. INTRODUCTION In southwestern Africa (Namibia, southern Angola and northwestern |  | BĂźhn, B., Rankin, A.H., Schneider, J., Dulski, P. (2002) The nature of orthomagmatic, carbonatitic fluids precipitating REE,Sr-rich fluorite: fluid-inclusion evidence from the Okorusu fluorite deposit, Namibia. Chemical Geology, 186 (1) 75-98 doi:10.1016/s0009-2541(01)00421-1 | Journal (article/letter/editorial) | | luid-inclusion evidence from the Okorusu f luorite deposit, Namibia B. BuĚhn a,*, A.H. Rankin b, J. Schneider...March 2001; accepted 7 December 2001 Abstract The Okorusu fluorite deposit occurs in Pan-African carbonaceous...northern Namibia. The epigenetic mineralization formed from fluids expelled from the Cretaceous Okorusu carbonatite...70458 â 0.70459, which are close to those of the Okorusu carbonatite. Primary and secondary aqueous fluid...than recorded for the fluorites and associated Okorusu carbonatite. Crush analysis of the bulk quartz |  | | Book | | REPUBLIC OF NAMIBIA - MINISTRY OF MINES AND ENERGY GEOLOGICAL SURVEY THE MINERAL RESOURCES OF NAMIBIA FIRST...ENERGY Of the several hundred minerals present in Namibia, around sixty have been exploited. some, such as...base metals and industrial minerals have helped Namibia rank amongst the top five mining countries in Africa...terms of production and reserves. In this context, Namibia is a major producer of copper, lead, zinc, cadmium...unpublished. It is evident that mineral exploration in Namibia, as elsewhere. has changed from serendipitous discoveries |  | BĂźhn, B, Schneider, J, Dulski, P, Rankin, A.H (2003) Fluidârock interaction during progressive migration of carbonatitic fluids, derived from small-scale trace element and Sr, Pb isotope distribution in hydrothermal fluorite. Geochimica et Cosmochimica Acta, 67 (23) 4577-4595 doi:10.1016/s0016-7037(03)00392-2 | Journal (article/letter/editorial) | | AbstractâAssociated with the Cretaceous Okorusu carbonatite complex (Namibia) is a hydrothermal fluorite mineralization...BuĚhn et al. Fig. 1. Geology of the Okorusu carbonatite complex, Namibia (after Van Zijl, 1962). modification...country rock marbles of the Cretaceous Okorusu carbonatite complex, Namibia. Here, vein-type fluorite mineralization...magmatic activity in the Damaraland igneous province, Namibia, lasted from âŹ137 to 124 Ma, and is thought to...metaluminous silicate rocks and peralkaline granite. The Okorusu carbonatite complex consists of alkaline silicate |  | | Journal (issue) | | Sterne und Rosetten ⢠Die Fluorit-Lagerstätte Okorusu in Namibia Die Neufunde aus der Vulkaneifel 2013 ⢠...Rosetten 41 Neues Ăźber die Fluorit-Lagerstätte Okorusu in Namibia 48 Die Jagd auf die grĂźnen Fluorite 62...dieses Foto einer Scheibe vom Vorkommen in Okorusu in Namibia . Wir berichten Ăźber Neuigkeiten und Funde...grĂśĂte zusammenhängende Waldgebiet Deutschlands. Die Region ist RĂźckzugsgebiet fĂźr seltene Tier- und Pflanzenarten...eine Gondel der Materialseilbahn der Sorte-Engel-Mine bei der Siedlung Maarmorilik. Beim Abbau des Marmors |  | | Journal (article/letter/editorial) | | in India [9]; Kangankunde in Malawi [10]; Okorusu in Namibia [11]; Barra do ItapirapuĂŁ in Brazil [12];...dikes of alkaline syenites, shonkinites, and magnetiteâapatite rocks, as well as several small dikes...apatite and magnetiteâapatite rocks are present in the area (Figure 1d). The age of the magnetiteâapatite...inclusions in carbonatites of the Central Tuva region is described in [37]. The concentrations of Na...crystalâfluid inclusions in the Western Transbaikalia region were collected from Yuznoe and Arshan REE-carbonatites |  | | Journal (issue) | | cover Vanadinite 3.4 cm, from the North Geronimo mine, La Paz County, Arizona. Dick Morris collection;...custom jewelry. Wulfenite, 5.4 cm, from the Defiance mine near Gleeson, Cochise County, Arizona. Ken Donn...photo. Wulfenite (hot-pink), 3.7 cm, from the Glove mine, Tyndall district, Santa Cruz County, Arizona. Collected...pseudomorph after azurite, 4 cm, from the Inspiration mine, Globe-Miami district, Gila County, Arizona. Ken...Cerussite twins on matrix, 6.5 cm, from the Grand Reef mine, Aravaipa district, Graham County, Arizona. Ken |  | | Journal (article/letter/editorial) | | magmas: implications from natural carbonatites, Namibia B. BuĚhn Instituto de Geoci^encias, University... Summary Two bimodal carbonatite complexes in Namibia of Cretaceous age are explored as to the presence...important trace element-bearing phases may be magnetite, baddeleyite and titanite (Chakhmouradian, 2006)...geochemical evolution of low-Si carbonatite bodies in Namibia, and addresses the response of carbonatite compositions...Kalkfeld and Ondurakorume carbonatites in northern Namibia, which are part of the Cretaceous Damaraland Igneous |  | | Journal (article/letter/editorial) | | Gross Spitzkoppe and Klein Spitzkoppe stocks in Namibia: Topaz-bearing A-type granites related to continental...Geological Survey of Namibia, P.O. Box 2168, 1 Aviation Road, Windhoek, Namibia c Rosh Pinab Zinc Corporation...Corporation (Pty) Ltd, P.O. Box 115, Rosh Pinab, Namibia Received 3 February 2006; accepted 4 December...The anorogenic Damaraland intrusive complexes in Namibia belong to the bimodal ParanĂĄâEtendeka Large Igneous...(siderophylliteâannite) granites with columbite, zircon, magnetite, and monazite as typical heavy accessory minerals |  | | Book | | Eden, MA 49 8 Three-dimensional evaluation of magnetiteâhematite transformation via EBSD technique Barbosa... 25 Advanced discrimination of hematite and magnetite by automated mineralogy Figueroa, G, MĂśller, K...relationship to beneficiation problems at Okorusu, Namibia Hagni, RD 297 Ore microscopic study of copper...losses from mining of bornite ores in the Sweetwater Mine, Viburnum Trend, Southeast Missouri Hagni, RD 307...oxidation and mobilization of arsenic in the Ketza River mine tailings Paktunc, D, Thibault, Y, and Weisener, |  | | Journal (issue) | | Pb-Sb oxy-chloro-sulfosalt from Buca della Vena mine * EUR. J. MINERALOGY 13(4), 08.01 651-652 Zinc-iron...863-870 Discovery of nanocrystalline botanical magnetite 961-972 Felbertalite, a new mineral species from...Oolitter andre sandkorn 23-24 Mineraler i bushen (Namibia) 32-34 Kristiansenitt - et nytt mineral fra Tørdal...from the Batalha mine, Paraiba, Brazil 139-147 Stibnite from the Wuling Antimony Mine, Jiangxi Province...Strahlerei 30-34 Poldervartit aus der N'Chwaning II - mine, Kalahari, SĂźdafrika 35-39 Tucson 2002 40- Neue |  | Elliott, H.A.L., Wall, F., Chakhmouradian, A.R., Siegfried, P.R., Dahlgren, S., Weatherley, S., Finch, A.A., Marks, M.A.W., Dowman, E., Deady, E. (2018) Fenites associated with carbonatite complexes: A review. Ore Geology Reviews, 93. 38-59 doi:10.1016/j.oregeorev.2017.12.003 | Journal (article/letter/editorial) | | Canada c GeoAfrica, P.O. Box 24218, Windhoek, Namibia d Telemark, Fylkeshuset, Postboks 2163, 3103 Tønsberg...One 268 example of this process is the Okorusu fenite, Namibia, which displays undulating or 269 scalloped...Willem, Namibia (Reid and Cooper, 1992); Toror Hills, Uganda (Sutherland, 1965b) 343 and Okorusu, Namibia...fluids from inclusions at the Okorusu and Kalkfeld 411 carbonatites, Namibia (BĂźhn et al., 2002). This...fenite, and the paucity of alkaline pyroxene and magnetite observed in the 595 local igneous suite. Isotopic |  | | Report (issue) | | A fluorite specimen from the Number 1 (Minerva) Mine, Cave-in-Rock subdistrict, Illinois-Kentucky fluorspar...............................................G31 Mine Waste Characteristics.........................................................................G36 Mine Closure...........................................a fluorite specimen from the Number 1 (Minerva) Mine, Cave-in-Rock subdistrict, Illinois-Kentucky fluorspar...Selected examples of the chemistry and mineralogy of mine waste generated at fluorspar mines............. |  | | Journal (article/letter/editorial) | | magmatism in the Cretaceous Paresis ring complex, Namibia: evidence for mixing of crust and mantle-derived...carbonatites and undersaturated alkaline rocks Ĺ˝e.g., Okorusu, Kalkfeld, Etaneno, Ondurakorume.. Geochemical...the Congo craton and related inliers in northern Namibia. The comendites are peralkaline, highly differentiated...Ĺ˝Peate, 1997.. The Damaraland Igneous Province in Namibia is a well-exposed and preserved group of some 20...with respect to other Damaraland complexes in Namibia. 4 B. Mingram et al.r Lithos 54 (2000) 1â22 |  | Gwalani, L. G., Rogers, K. A., DemĂŠny, A., Groves, D. I., Ramsay, R., Beard, A., Downes, P. J., Eves, A. (2010) The Yungul carbonatite dykes associated with the epithermal fluorite deposit at Speewah, Kimberley, Australia: carbon and oxygen isotope constraints on their origin. Mineralogy and Petrology, 98 (1) 123-141 doi:10.1007/s00710-009-0102-1 | Journal (article/letter/editorial) | | Yungul carbonatite dykes at Speewah in the Kimberley region of Western Australia were emplaced along a north-trending...source of fluorite, barite, apatite, vermiculite, magnetite, and the pyrochloresubgroup, the principal economic...carbonatites of the Speewah area in the Kimberley region, Western Australia (Fig. 1), located about 110...diamondiferous lamproite diatreme of the Argyle mine (see Jaques et al. 1986). The Yungul carbonatite...dolerite, tholeiitic gabbro and gabbro rich in magnetite with or without olivine, and granophyres and granite |  | Wall, F., Niku-Paavola, V. N., Storey, C., Muller, A., Jeffries, T. (2008) XENOTIME-(Y) FROM CARBONATITE DYKES AT LOFDAL, NAMIBIA: UNUSUALLY LOW LREE:HREE RATIO IN CARBONATITE, AND THE FIRST DATING OF XENOTIME OVERGROWTHS ON ZIRCON. The Canadian Mineralogist, 46 (4) 861-877 doi:10.3749/canmin.46.4.861 | Journal (article/letter/editorial) | | XENOTIME-(Y) FROM CARBONATITE DYKES AT LOFDAL, NAMIBIA: UNUSUALLY LOW LREE:HREE RATIO IN CARBONATITE,...1, Aviation Road, Private Bag 13297, Windhoek, Namibia Craig STOREY Department of Earth Sciences, University...very rare in carbonatite. Uniquely, at Lofdal, Namibia, xenotime-(Y) occurs in many carbonatite dykes... in situ dating, LAâICPâMS technique, Lofdal, Namibia. § E-mail address: f.wall@exeter.ac.uk 862...Malawi (Wall & Mariano 1996). However at Lofdal, Namibia, xenotime-(Y) is a common accessory mineral in |  | | Journal (article/letter/editorial) | | should be excluded from consideration, otherwise, magnetite and hematite-rich calciocarbonates or magnesiocarbonatites... Tanzania, and one occurrence in Zambia); (b) Namibia and Angola; (c) Eastern Russia (East Tuva, Enisei...observed. Magmatic mineralisation (e.g. Nb, apatite, magnetite, and baddeleyite) is commonly hosted by early...Epshteyn and Kabanâkov 1984). Phoscorites are magnetite, olivine, apatite rocks usually associated with...redeďŹned as a âplutonic ultramaďŹc rock comprising magnetite, apatite, and one of the silicates, forsterite |  | | Journal (article/letter/editorial) | | endoskarn abundance in CuâZn skarns at the Empire Mine, Idaho, USA Zhaoshan Changa,*, L.D. Meinertb a ...in some CuâZn skarn deposits such as the Empire Mine in Idaho. Important features include: (1) quartz...localities such as the world-class CuâZn skarn Antamina mine, as well as some tin and rapakivi granites. D 2004...associated with some ore deposits, such as the Empire Mine, Idaho, USA, contain quartz phenocrysts that are...tin and rare-metals mineralization at the Pitinga mine, Brazil. Embayment of quartz phenocrysts also has |
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