 | | Journal (article/letter/editorial) | | 07 January 2015 Goboboseb Mountains Brandberg Region, Namibia BRUCE CAIRNCROSS Department of Geology...Bruce Cairncross Some of the finest prehnite and quartz, including amethyst, in southern Africa has been...the past few decades in the Brandberg region, Namibia. Excellent quartz specimens display a wide variety...that add to the appeal of specimens from the area. The quartz is well known for its luster, clarity, and...phantoms of amethyst and smoky quartz zoned in single crystals. The quartz may contain fluid inclusions |  | | Journal (article/letter/editorial) | | Cretaceous Paraná–Etendeka Large Igneous Province: New palaeomagnetic data from Namibia Sarah C. Dodd a,∗ , Conall...There is long-standing correlation between Large Igneous Provinces (LIPs) and major mass extinction events...Paraná–Etendeka volcanic province of Brazil and Namibia represents something of an enigma amongst LIPs...org/licenses/by/4.0/). 1. Introduction Large igneous provinces (LIPs) are magmatic regions covering...1 Mkm2 ) comprising large volumes of extruded igneous material (many LIPs >1 Mkm3 ) emplaced over geologically |  | | Journal (article/letter/editorial) | | Volcanism of the Goboboseb Mountains and Messum Igneous Complex, Namibia. Part I: Geochemical Evidence of Early...JULY 30, 1997 The Goboboseb Mountains and Messum Complex represent a major Cretaceous (132 Ma) bimodal...Goboboseb quartz latite members, the Messum Mountain Basalts, and finally the Springbok quartz latite....dykes. Within the Messum Complex, a remnant early sequence of basalts (Messum Crater Basalts) are in part...Energy, P.O. Box 2168, Windhoek 9000, Republic of Namibia. ‡ Present address: Research School of Earth Sciences |  | | 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 |  | Bauer, K., Schulze, A., Ryberg, T., Sobolev, S. V., Weber, M. H. (2003) Classification of lithology from seismic tomography: A case study from the Messum igneous complex, Namibia. Journal of Geophysical Research: Solid Earth, 108. doi:10.1029/2001jb001073 | Journal (article/letter/editorial) | | tomography: A case study from the Messum igneous complex, Namibia K. Bauer, A. Schulze, T. Ryberg, S...profile. We applied the method to the Messum intrusive complex of Namibia and identified three prominent classes...dominates the upper 800 m of the crust under the complex. Outside of the intrusion the upper crust has properties...the crust; 9305 Information Related to Geographic Region: Africa; KEYWORDS: tomography, P and S wave velocity...tomography: A case study from the Messum igneous complex, Namibia, J. Geophys. Res., 108(B3), 2152, doi:10 |  | | Journal (article/letter/editorial) | | “laws” for quartz are the Dauphiné, Brazil, and Japan laws (not Japanese law, please!). With quartz, twinning...was named) is quoted as stating that an untwinned quartz crystal is one of the greatest rarities of the...Figure 2. Quartz with pseudo Japan-law twinning, 8 cm, from the “Messum Mountains,” Namibia. Smithsonian...Figure 1. Typical appearance of some Japan-law quartz twins (from frondel 1962, p. 95). is the most...explaining the confusion surrounding a specimen of quartz that I observed long ago in the Smithsonian’s vast |  | | Book | | AiAiba / farm Anibib 136 8 Grosse Spitzkoppe, Erongo 9 , .,/, loringa tree . Khomas Highland...station Garub near Aus Nature conservation, Erongo 16 Welwitschia, Goboboseb Mountains 17 ....Northwest Region including Damaraland The Central Namib Desertand Escarpment The Spitzkoppen The Erongo Mountains...The Central Escarpment- The Nauchas-Gamsberg-Hakos Area West and South of Rehoboth The Central and South-CentralDeposits...Copper Deposits The South The Pegmatitesin Central Namibia Luderitz and the Diamonds 44 49 241 254 272 275 |  | | Report (issue) | | CREDITS Cover: Quartz variety amethyst, 10.5 cm tall Goboboseb Mountains, Erongo Region, Namibia Scott Rudolph...collection, Robert Weldon photo © 2009 GIA Page 2 Quartz variety amethyst, 3.5 cm tall Kakamunurle Mine...collection, Marie-Lan Nguyen photo Upper middle: Quartz variety amethyst (Japan-law twin), 1.6 cm tall...Zillertal Anton Watzl, Sr. photo, circa 2004 Bottom: Quartz variety amethyst, 6.7 cm tall Wattika Mine, Murzinka...the word "amethyst" refers to macrocrystalline quartz that is violet or purple and is derived from the |  | | Journal (article/letter/editorial) | | STEIN 2-2012 Trip Report Namibia 2009 Av Lennart Borg. Foto: Gunnar Jenssen Namibia har 1,8 miljoner innevånare...resten av ”alla” djur under resan. Vår steintur i Namibia varade i fyra veckor och började när Gunnar, Johannes...passerade vi staden Steinkopf närmast gränsen till Namibia. Där handlade vi mer sten av en mineralletare och...grönsaker som vi skulle använda under ökenturen i Namibia. Våra sten vänner Heinz och Henris bilar har stora...River samt bifloden Fish River och kom fram till Namibia Dag 7 och 8 - upplevde vi en punktering i öknen |  | | Journal (issue) | | field divide, so we started out, encouraged by quartz in flints which were sparkling in the sun, including...some localities in the copper, lead, barite mining area in the hills to the south-east of Pontesbury. The...was the Badger Level section of the Huglith mine complex, which was our other location. We were too large...our parking lot just 50 yards from the collecting area - what service! Geologically, this roadstone quarry...specimens as well as micros of prehnite, calcite and quartz. We will have to wait until the competition to |  | | Journal (article/letter/editorial) | | Petrology of the Alkaline Core of the Messum Igneous Complex, Namibia: Evidence for the Progressively Decreasing...WINDHOEK, NAMIBIA RECEIVED NOVEMBER 12, 1998; REVISED TYPESCRIPT ACCEPTED APRIL 12, 1999 The Messum complex...complex of NW Namibia, a part of the Paraná– Etendeka volcanic province, consists of a dominantly felsic...central core, surrounded by older gabbros. The igneous rocks of the core can be divided, in order of decreasing...age, into (1) a sub-alkaline suite, (2) an outer quartz syenite suite, and (3) an inner silicaundersaturated |  | | Journal (issue) | | over rough terrain in three 4 x 4 vehicles in Namibia in July. We slept above the ground on camp beds...tourmalines, rose quartz, red garnets, sceptred amethysts and distorted, bent crystals of quartz known as "crazy..."crazy quartz". We also collected some rare minerals: red recticulated rutile, balls of the yellow bismuth.................................. LANZAROTE TO NAMIBIA: Olivine to Shattuckite Plus our advert appeared...were organised , one to Lanzarote the other to Namibia in south-west Africa. Lanzarote is well known to |  | | Book | | .,,., ..,,.... w + ..... . ·. .... . - Namibia Zauberwelt edler Steine und Kristalle ooa Dieses...Erdgeschichte 8 Zur Geschichte des Bergbaus in Namibia 17 Der Brandberg und die Mineralfunde in seiner Umgebung...blaue Wunder vom Erongo - Auf Aquamarin-Jagd im Innern Namibias 72 Miarolen im Erongo-Granit- ein Eldorado...110 Auf Turmalinsuche in Namibia Die Demantoide von Tubussis in Zentral-Namibia 112 116 Sodalith von...bei Rössing l 19 Zeolithe vom Grootbergpaß in Namibia Kamphaugit-(Y) von der Rössing-Mine 120 124 126 |  | KIRSTEIN, LINDA A., PEATE, DAVID W., HAWKESWORTH, CHRIS J., TURNER, SIMON P., HARRIS, CHRIS, MANTOVANI, MARTA S. M. (2000) Early Cretaceous Basaltic and Rhyolitic Magmatism in Southern Uruguay Associated with the Opening of the South Atlantic. Journal of Petrology, 41 (9) 1413-1438 doi:10.1093/petrology/41.9.1413 | Journal (article/letter/editorial) | | evolved rock types towards the margins of such an area of plume-related magmatism. The mafic lavas are...the less voluminous Etendeka volcanic field of Namibia, which formed a single continental flood basalt...erupted during the Early Cretaceous. This large igneous province is linked to the Tristan mantle plume...widely scattered in Brazil, Paraguay, Angola and Namibia (Gibson et al., 1995; Milner et al., 1995). ∗Corresponding...vicinity of sampling. The volcanic rocks from the area to the east of Alferéz, and as far north as Treinte |  | | Journal (issue) | | Sørlie Ellingsenitt, et nytt mineral fra Aris, Namibia av Astrid Haugen Reisebrev fra Marokko av Jan Stenløkk...noen prinsesse av Magne Høyberget Trip Report Namibia 2009 av Lennart Borg ”SAMLET” av Thor Sørlie Vi...indicated by Scmineralization in the Fen peralkaline complex, Southern Norway. Economic Geology 72: 855-859...pegmatite at Virikkollen, Sandefjord, Larvik plutonic complex, Norway. Norsk Bergverksmuseum, skrift 49, 35-44...2-2012 Ellingsenitt, et nytt mineral fra Aris, Namibia Av Astrid Haugen Vi har vært medlemmer i Venneforeningen |  | | Book | | oceanic volcanic 128 island basalts 3.3 Large igneous provinces (LIP): oceanic p1ateaux and continenta1...Africa 194 3.5.2. The Damaraland alkaline province, Namibia 198 3.5.3. Carbonatites 199 3.5.4. Kimberlites...Plumes 6.1 Introduction 6.2 Intracontinenta1layered igneous intrusions 6.3 Anorogenic prograde metamorphism...metamorphism in the Central Zone ofthe Damara Orogen, Namibia 6.3.2. Anorogenic metamorphism in the eastern Pyrenees...layered igneous complexes 8.2.1. The Great Dyke, Zimbabwe 8.2.2. The Bushveld lgneous Complex, South Africa |  | | Book | | springer.com To my wife Foreword The Earth is a complex and dynamic system that over 4.5 billion years...papers and 19 geological maps in Western Australia, Namibia and Greenland. Throughout his career, which has...(GSWA) typed most of the tables, especially the complex ones. Jean Johnston and Chris Hocking performed.... . . . . . . . . . . . . . 1.4.8 The Role of Complex Ions and Ligands in Hydrothermal Fluids . . . .... . . . . . . . . . . . . . . . . . . . 1.4.9 Complex Ions in Hydrothermal Solutions . . . . . . . . |
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Messum Crater, Messum Igneous Complex, Brandberg Area, Dâures Constituency, Erongo Region, Namibia