 | | Journal (article/letter/editorial) | | 20013 pohwatp@si.edu FLUORITE Part 2 Huanggang Mine, Inner Mongolia, China T he first part of this...northern England, particularly from the Rogerley mine, has made these classic specimens available once...21:02 21 November 2014 Figure 1. Fluorite on calcite, 17 cm high, from the Huanggang mines, Huanggang...Kèshíkèté Qi County, Inner Mongolia Autonomous Region, China. Limpid complex fluorite crystals displaying...made of the complex crystals from the Trevaunce mine, St. Agnes. The crystals on the Smithsonian specimens |  | | 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...Cretaceous Okorusu carbonatite, Namibia, includes diopside-bearing and pegmatitic calcite carbonatites...carbonatite, REE, Sr and Ba are largely hosted by calcite and fluorapatite. However, in hydrothermally altered...Hydrothermal calcite has a much lower trace element content than the original, magmatic calcite. Despite...Despite the low REE contents of the hydrothermal calcite, the REE patterns are similar to those of parisite-(Ce) |  | | 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...generally associated with quartz, chalcedony, calcite, or barite; sphalerite and galena are the most...young rifts in eastern and central Africa, in Namibia (South West Africa), and in Angola and is associated |  | | 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 |  | | Journal (issue) | | the last outing to Plumpton. A piece of Plumpton Calcite sits prominently on the shelf in my living room...maybe my wife has a hitherto undeclared love of calcite - or it matches the paint!). I'd brought the Mitsubishi...which is probably following a fault plane. The calcite we sought has formed along this fault plane amongst...did not take long before the first small bits of calcite had been found. In additition, several sponge fossils...where we had found good material last time. The calcite appears in large chunks which have been ploughed |  | | 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) | | carbonatite-related fluorspar ore deposits are located at Okorusu (Namibia), Amba Dongar (India), and Mato Preto (Brazil)...by the presence of calcite. The calcite commonly is present as binary locked calcite-fluorite particles...karbonatitischen Fluoritlagerst~itten sind Okoruso (Namibia), Amba Dongar (Indien) und Mato Preto (Brasilien)...Currently fluorspar deposits are mined at Okorusu (Namibia), A m b a Dongar (India), and Mato Preto (Brazil)...beneficiation problems of the fluorite ores at the Okorusu mine as a means of illustrating how mineralogical |  | | 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 |  | | Report (issue) | | colored arsenates (mostly adamite) from the Ojuela mine. The sterling pale purple example shown here costs...is about $615). Adamite, 2.2 cm, from the Ojuela mine, Mapimí, Durango, Mexico. Key’s Minerals specimen...fluorapatite/fluorite “combination” piece from the Sauberg mine, Ehrenfriedersdorf, Obersachsen—i.e. Upper Saxony...rarity as time goes by. The Sauberg tin/tungsten mine closed for good when the Berlin Wall came down in...Fluorapatite and Fluorite, 2.3 cm, from the Sauberg mine, Ehrenfriedersdorf, Saxony, Germany. Key’s Minerals |  | | 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 |  | 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 |  | 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...and barite, a Mn-rich crust on early calcite, and pure calcite. This clear-cut sequence of mineral growth...crust on early calcite accumulated REE, Ba, Pb, Zr, Cs, Th and U, developing into pure calcite with a prominent...from fluorite I and most fluorite II (f ⫽ 0.5) to calcite (f ⫽ 0.2– 0.3) and hydrothermal quartz (f Ⰶ 0.1)...were incorporated later into the Mn-rich crust on calcite. The trace element patterns of the hydrothermal |  | | 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 |  | | 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 |  | | 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 |  | | Journal (issue) | | Artillery Peak Wickenburg La Paz Co. Phoenix Dives mine Maricopa Co. vindplaats van wickenburgiet 58...claim dit is de type-vindplaats) en de Moon Anchor mine, ten zuiden van Wickenburg, Maricopa County en op...Wickenburg. o La Paz Co. : Dives mine, Red Cloud mine, Padre Kino mine, Silver District, Trigo Mountains...China en Namibië (met de bekende Okorusu groeve, Otjiwarongo, Otjozondjupa, Namibië), maar ook wegens echte...Australia, Australia 1/3-4/12-14 Copper from the Itauz mine near Dzhezkazgan, Kazakhstan 8 New Mexico news 8-9/13-14 |  | | Journal (issue) | | Sterne und Rosetten • Die Fluorit-Lagerstätte Okorusu in Namibia Die Neufunde aus der Vulkaneifel 2013 • ...Rosetten 41 Neues über die Fluorit-Lagerstätte Okorusu in Namibia 48 Die Jagd auf die grünen Fluorite 62...dieses Foto einer Scheibe vom Vorkommen in Okorusu in Namibia . Wir berichten über Neuigkeiten und Funde...größte zusammenhängende Waldgebiet Deutschlands. Die Region ist Rückzugsgebiet für seltene Tier- und Pflanzenarten...eine Gondel der Materialseilbahn der Sorte-Engel-Mine bei der Siedlung Maarmorilik. Beim Abbau des Marmors |  | | 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 |  | | Journal (issue) | | (Dodecahedron) with Quartz, Erongo Mountains, Namibia, 2.5 x 2.6 x 2.4 cm, Jeff Scovil photo, Alex Schauss...Club. This led to all kinds of field trips in the region, including one of my first trips to collect Herkimer...track, to collect specimens underground at the Kelly mine, famous for exceptional blue-green botryoidal smithsonite...nearby Graphic mine, noted for azurite and malachite crystals, and visit the Blanchard mine to collect fine...included that of Ms. Blanchard at the Blanchard mine, who greeted someone she didn’t know with a shotgun |  | | Journal (article/letter/editorial) | | minerals, particularly certain species from Tsumeb in Namibia and the Kalahari manganese field in South Africa...shown here for the first time. Examples are from Namibia, South Africa, Zimbabwe, and Tanzania. All the... Reproduced with permission Reproduced with permission Namibia Reproduced with permission Reproduced with permission...Blue willemite and white dolomite, 6.5 cm, Tsumeb mine. The blue willemite fluoresces bright yellow, and...the UV source; Tsumeb mine. Field of view is 2.2 cm. Figure 3. The Skorpion mine is located close to the |  | | Journal (article/letter/editorial) | | magmas: implications from natural carbonatites, Namibia B. Bühn Instituto de Geoci^encias, University... Summary Two bimodal carbonatite complexes in Namibia of Cretaceous age are explored as to the presence...Ca- and Mg=Fe-carbonatites, composed of calcite alone or calcite with ferroan dolomite, fluorapatite and...s€ovites to beforsites is due to crystallization of calcite and fluorapatite. All carbonatites show a negative...clinopyroxene, perovskite= titanite, melanite, calcite, apatite, spinel and wollastonite (Hamilton and |  | | 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 |  | | Catalog/List | | Mineral Shows 1 3 5 BARITE, FLUORITE & TAR Emilio Mine, Caravia, Spain. Fluorite cubes to 14mm. 68x52x29mm...FLUORITE with SCHORL inclusions on QUARTZ, Erongo, Namibia. 68x67x37mm. £38 6 NATIVE GOLD Gympie, Queensland...Queensland, Australia. 37x23x28mm. £235 9 CALCITE Okorusu, Namibia. 88x53x35mm. £42 4 PYROMORPHITE Saint...Erongo, Namibia. Main crystal 42mm. 47x33x33mm. £135 maliastr 2 CASSITERITE Pendarves Mine, Camborne...£24 13 RED QUARTZ "Eisenkiesel" Orange River, Namibia. Crystals to 25mm. 80x67x53mm. £65 14 VANADINITE |  | 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...abundant carbonate 7 141 mineral present e.g. calcite carbonatite, dolomite carbonatite, ankerite carbonatite...1981; Woolley and Kempe, 1989) including 148 calcite, dolomite, ankerite, siderite and magnesite (Woolley...central core 192 of Neoproterozoic (578 ± 24 Ma) calcite carbonatite and alkaline intrusions of the 193...One 268 example of this process is the Okorusu fenite, Namibia, which displays undulating or 269 scalloped |
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Okorusu Mine, Otjiwarongo Constituency, Otjozondjupa Region, Namibia