 | | 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...metals’ — metals which are sourced from a restricted region and have low substitutability and recyclability |  | | 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 |  | | 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 •Westcott mine, though a few good finds were made in the two ad...• • •, :. • I Originally started as a copper mine in the latter part of the 1800s, the workin·gs at |  | | 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 |  | | 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 |  | Bühn, B, Schneider, J, Dulski, P, Rankin, A.H (2003) Fluid–rock 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) | | Abstract—Associated with the Cretaceous Okorusu carbonatite complex (Namibia) is a hydrothermal fluorite mineralization...into fluid–rock interaction processes between the marble and the migrating carbonatitic fluid, and element...interaction, f ⫽ weight fraction of fluid/(fluid ⫹ marble), decrease from fluorite I and most fluorite II...aCO2 and aF⫺ in the fluid during continued fluid–marble reaction. A predominance of carbonate over fluoride...Bühn et al. Fig. 1. Geology of the Okorusu carbonatite complex, Namibia (after Van Zijl, 1962). modification |  | Bühn, 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. Bühn 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 – 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 |  | | Catalog/List | | it collected when the Tsumeb Mine (as well as other mines of the region) were still in production in...engineering work took him to the Tsumeb Mine in Namibia. This mine is renowned for producing what are arguably...desert-like "Sperrgebiet" area of the southern coast of Namibia, with its fabulous wealth of gem diamonds. One...Ian’s interest stems from the family trips to Namibia, including the mines of Tsumeb. He worked with... 57001 Azurite Level 8, Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia If the attachment point on the |  | | Journal (article/letter/editorial) | | Damaraland Lamprophyres and Carbonatites, Northwestern Namibia: Evidence for Plume–Lithosphere Interactions ANTON...igneous complexes in Damaraland, northwestern Namibia. Lamprophyres, emplaced as late-stage dykes, stocks...WORDS: geochemistry; lamprophyre carbonatite; Namibia; Tristan plume ∗Corresponding author. Telephone:+27-21-650-2921...complexes extend through Damaraland in northwestern Namibia (Fig. 1) and provide an example of the contiguous... 1. Simplified geological map of northwestern Namibia, showing the main outcrop regions of the Etendeka |  | | Journal (issue) | | Front cover: Sulfur on Aragonite, 25 cm Cozzodisi mine, Casteltermini, Agrigento, Sicily, Italy. Adalberto...place in the Sardinian mines and the Traversella mine (Piedmont). The second edition of the Catalogue...Marches Region, and the sphalerite, chalcopyrite and various rare sulfosalts from the Bottino mine in Tuscany...exploring the underground workings of an historic gold mine in the Brusson area, Val d' Ayas, western Alps....momentum came from my first visit to the Jeffrey mine in Asbestos, Quebec in 1997. I was fascinated by |  | | Report (issue) | | MINISTRY OF MINES AND ENERGY GEOLOGICAL SURVEY OF NAMIBIA Director: G. I. C. Schneider in co-operation with...Data Set of Namibia: Comments on Compilation of the Data from West Central and Southern Namibia and on Anomaly...present: Geological Survey of Namibia, Windhoek 2) Geological Survey of Namibia (GSN) Obtainable from the...the Geological Survey P. O. Box 2168, Windhoek, Namibia ISBN 0-86976-402-0 Copyright reserved CONTENTS...Sheet 2014 (Fransfontein) 31 5.2 Map Sheet 2016 (Otjiwarongo) 34 5.3 Map Sheet 2114 (Omaruru) 35 5.4 Map Sheet |  | | 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 (issue) | | Jebel Ouichane, Sagangane, Nador Province, Oriental Region, Morocco. Doug Fiske collection; Jordan Root photo...row, from left: Euclase, 2.3 cm, from the Gachalá mine, Guavió-Guatéque mining district, Boyacá Department...Budd photo. Tanzanite, 7.6 cm, from the Merelani mine near Arusha, Tanzania. Barry & Beth Kitt collection;...Fluorite on quartz, 13 cm, from the Yaogangxian mine, Chenzhou Prefecture, Hunan Province, China. The...Spodumene (variety kunzite), 9 cm, from the Urucum mine, Galiléia, Minas Gerais, Brazil. Gus & Jane Eifler |  | | Book | | and marble by fluorspar ores and its relationship to beneficiation problems at Okorusu, Namibia Hagni...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,... Understanding micro-environment development in mine tailings using MLA and image analysis Redwan, M...Schuiling, RD 637 77 Staining of an indoor carrara marble floor at the Opera House, Oslo, Norway Selbekk |  | 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 (Bühn et al., 2002). This...such as 428 the 23 wt.% increase observed in the marble at Lac a la Perdrix, Canada (Fig. 8E). 429 However |  | | Journal (article/letter/editorial) | | Xianshuihe fault in the north (Fig. 2b). As the only adit mine at MD, this deposit contains resources of 115,075...Diaoloushan and Zhengjialiangzi sections; (2) Permian marble extends from northeast to the southwest direction...emplaced into the basalt, green schist, and Permian marble which, in turn, was intruded by Cenozoic nordmarkite...located in the southeastern area, intruded into marble and connected with Cenozoic nordmarkite. The REE...tensile fractures in metadiabase and nordmarkite/marble (Fig. 2b). As reported in Zhou et al. (2006) and |  | | Journal (article/letter/editorial) | | Tanzania, and one occurrence in Zambia); (b) Namibia and Angola; (c) Eastern Russia (East Tuva, Enisei...2 6.2 2.7 Sokli 62.9 21.6 34.4 13.5 21.5 27.8 Okorusu 8.2 0.2 2.7 2.7 32.7 4.9 Lueshe 4.4 2.8 64.6 0...recognised, such as the Swartbooisdrift complex, Namibia (Drüppel et al. 2005) and the Gifford Creek ferrocarbonatite...zone, West Africa (Attoh et al. 2007); carbonatite-marble dikes of Abyan Province, Yemen Republic (Le Bas...AND S. PARADIS columbite-(Fe), and fersmite in marble is evidence of a carbonatite origin. Le Bas et |  | | Book | | Goudie Heather Viles Landscapes and Landforms of Namibia World Geomorphological Landscapes Series editor...Goudie • Heather Viles Landscapes and Landforms of Namibia 123 Andrew Goudie School of Geography and the...geographically coherent region. This volume presents the geomorphology of Namibia—a country that hosts superb...with wildlife—they can all be found across Namibia. Since Namibia is relatively easy to navigate, the book...their assistance and valued company in the field in Namibia, including Dick Grove, the late Charles Koch, Abi |  | | 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............. |  | Fan, Hong-Rui, Xie, Yi-Han, Wang, Kai-Yi, Tao, Ke-Jie, Wilde, Simon A. (2004) REE Daughter Minerals Trapped in Fluid Inclusions in the Giant Bayan Obo REE-Nb-Fe Deposit, Inner Mongolia, China. International Geology Review, 46 (7) 638-645 doi:10.2747/0020-6814.46.7.638 | Journal (article/letter/editorial) | | consists of replacement bodies hosted in dolomite marble and of magnetite, REE fluorocarbonates, fluorite...Sample Q-54, from the East Pit, is altered dolomite marble with bands of apatite, monazite, and bastnaesite...due to the management and staff of the Bayan Obo mine for their hospitality during field work. REFERENCES...Fluid-inclusion evidence from the Okorusu fluorite deposit, Namibia: Chemical Geology, v. 186, p. 75–98 |  | | Journal (article/letter/editorial) | | Metamorphic rocks, exposed in the vicinity of Yıldızeli region, start at the basement with pelitic schists and...sequence consists of quartzite, quartz schist, and marble at the top (Alpaslan 1993). The thickness of metamorphic...characterized by mica schist, calc-silicate, and marble. Radiometric K/Ar studies yielded ages of metamorphism...REE reveals that most of the samples lie in the region of granitoid-hosted fluorite occurrences from the...hydrothermal solutions between syenite and the surrounding marble (see Fig. 2). In general, fluorite samples in the |  | | Report (issue) | | ~o Moroni Lusaka*--- • Ha B MOZAMBIQUE NAMIBIA ( Windhoek* Gaborone * Pretoria * Mbabane ... 105 Mozambique . . . . . . . . . . . . . 113 Namibia . . . . . . . . . . . . . . . . 119 Nigeria . ...of diversified experience in mineral exploration, mine design, development, and operations, as well as...mineral industry of Canada, Iran, Mexico, and Namibia. He is also the Bureau's specialist on the North...in Africa and the Middle East, especially Iraq, Namibia, South Africa, and Zaire. Hendrik G. van Oss is |  | | Journal (article/letter/editorial) | | waters and it was also determined that the Alis,ar region is different from the other two regions with respect...brown syenites of the Alis,ar region, like those in the Bayindir region, are dark and light purple and...Yapanbel H F Karatombak gabbro Metamorphic rocks; Marble Schist, calc-schist, calc-silicatic fels and hornfels...Bayindir Boz H. Probable fault F No undertaking mine Mezar H. Asilik H. B l a c k S e Istanbul Anatolian...Karatombak H. Tom Cafertas H. F a Undertaking mine Joint system dip and strike Kirsehir TURKEY 0 |  | | Journal (article/letter/editorial) | | country rocks of the Kalkfeld carbonatite complex, Namibia. The fluid inclusion population provides a unique...crust-derived complexes (open) in north central Namibia. their host rock composition (Rankin and Le Bas...Dongar, India; Simonetti and Bell, 1995; Okorusu F deposit, Namibia; Van Zijl, 1962), or for alteration of...encountered at the Kalkfeld carbonatite complex (Namibia), where a volatile- and alkali-rich carbonatitic...crust-derived melts on the African continent in northern Namibia (Fig. 1). K⫺Ar age determinations on biotites of |
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