 | Boni, M., Terracciano, R., Evans, N. J., Laukamp, C., Schneider, J., Bechstadt, T. (2007) Genesis of Vanadium Ores in the Otavi Mountainland, Namibia. Economic Geology, 102 (3) 441-469 doi:10.2113/gsecongeo.102.3.441 | Journal (article/letter/editorial) | | Genesis of Vanadium Ores in the Otavi Mountainland, Namibia MARIA BONI,† Dipartimento di Scienze della Terra...vanadate ores (descloizite, mottramite, and vanadinite) in the Otavi Mountainland, Namibia, once were considered...style remains controversial. Mottramite and Cu descloizite are particularly abundant around Cu sulfide deposits...whereas descloizite occurs in the areas surrounding primary sphalerite-willemite orebodies (Berg Aukas type)...and Pb isotope analyses, and direct (U-Th)/He descloizite thermochronometry. The vanadates are considered |  | | Journal (issue) | | Actinolite from Namibia by Justin Zzyzx ............................................pg. 15 Abenab Mine by Ernst...Three Aloes Mine by Ernst Schnaitmann ........................................pg. 37 Berg Aukas by Ernst..................................pg. 47 Otjozondu Mine by Ernst Schnaitmann .............................we bring you eleven articles about locations in Namibia that do not receive much publicity. It is easy...legendary deposits such as Tsumeb, the Brandberg region and the Erongo Mountains. Alpine clefts, huge soda |  | | Journal (article/letter/editorial) | | 20013 pohwatp@si.edu WILLEMITE Tsumeb Mine, Tsumeb, Otjikoto, Namibia M ineral nomenclature is usually...Figure 1. Willemite from the Tsumeb mine, Otijikoto region, Namibia. The specimen displays the typical...Black willemite is common from the Sterling Hill mine, with the color due to inclusions of franklinite...specimen producer is the Tsumeb mine, Tsumeb, Otjikoto region, Namibia. Willemite specimens were relatively...locality that has produced willemite specimens is Berg Aukas, where colorless to pale green radial masses |  | Schneider, Jens, Boni, Maria, Laukamp, Carsten, Bechstädt, Thilo, Petzel, Volker (2008) Willemite (Zn2SiO4) as a possible Rb–Sr geochronometer for dating nonsulfide Zn–Pb mineralization: Examples from the Otavi Mountainland (Namibia) Ore Geology Reviews, 33 (2) 152-167 doi:10.1016/j.oregeorev.2006.05.012 | Journal (article/letter/editorial) | | mineralization: Examples from the Otavi Mountainland (Namibia) Jens Schneider a,⁎, Maria Boni b,c , Carsten Laukamp...Germany d Geological Survey of Namibia, 1 Aviation Road, Windhoek, Namibia Received 12 September 2005; accepted...willemite from the Berg Aukas and Abenab West deposits, Otavi Mountainland (Namibia), which are hosted... Isochron regressions combining samples from Berg Aukas and Abenab West willemites yield Rb–Sr ages in...samples of coarse-grained, well-crystallized Berg Aukas willemite, which yield 499 ± 63 Ma (MSWD = 2 |  | | Journal (article/letter/editorial) | | mineralization in the Otavi Mountain Land, Northern Namibia—a review and regional interpretation A.F. Kamona...Günzel b a b University of Namibia, Private Bag 13301, Windhoek, Namibia Ongopolo Mining Ltd., Main Street...Street, P.O. Box 40, Tsumeb, Namibia Received 16 May 2004; accepted 10 April 2006 Available online 4...like Tsumeb (Pb–Cu–Zn–Ge), Kombat (Cu–Pb–Zn), Berg Aukas (Zn–Pb–V), Abenab West (Pb–Zn–V) all occur in...carbonate-hosted Pb–Zn deposits in the Abenab Subgroup at Berg Aukas and Abenab is not well constrained, but the stable |  | | Journal (issue) | | precious stone. Opalbanya is the name of the original mine location. Possibly Magyar, ancient Hungarian. These...are fine Some aren't unpacked yet -a few are now mine! But rocks in the garage and more in the shed, Were...for Vitec, our contact for our visit to the Tsumeb Mine. It has to be said that some of that time was spent...Figure 1 Headframe of the De Wet Shaft, Tsumeb 1 Namibia Handbook (Footprint) p324 -7- SMLS Journal 176...and diversity of mineral resources throughout Namibia. Although widely ranging and distributed, a large |  | | Journal (article/letter/editorial) | | {N MINERALOGIST, VOL. 52, JULY AUGUST, 1967 DESCLOIZITE, MOTTRAMITE, AND VANADINITE FROM SOUTH WEST AFRICA:...Johannesburg,Soulh AJrica. Ansrnacr Descloizite, cuprian descloizite, mottramite, and vanadinite from various...identification of the members of the isomorphous series, descloizite to mottramite. In addition, vanadinite can readily...from descloizite by the infrared method. h.rrnooucrroN Although the lead vanadates,descloizite,mottramite...currently in use for distinguishingbetween descloizite,cuprian descloizite, and mottramite have not proved to |  | | Report (issue) | | Descloizite PbZn(VO4 )(OH) c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Orthorhombic...057 c = 9.416 Z=4 X-ray Powder Pattern: Venus mine, [El Guaico district, Córdoba Province,] Argentina;...19.21 55.47 2.17 0.02 Total 100.21 (1) Abenab, Namibia. (2) Pb(Zn, Cu)(VO4 )(OH) with Zn:Cu = 1:1. Polymorphism...23 100.00 Forms a series with mottramite. Descloizite group. Occurrence: A secondary mineral in the... Mexico. In the USA, in the Mammoth-St. Anthony mine, Tiger, Pinal Co., and from Bisbee, Cochise Co. |  | Mondillo, Nicola, Accardo, Mariafrancesca, Boni, Maria, Boyce, Adrian, Herrington, Richard, Rumsey, Mike, Wilkinson, Clara (2020) New insights into the genesis of willemite (Zn2SiO4) from zinc nonsulfide deposits, through trace elements and oxygen isotope geochemistry. Ore Geology Reviews, 118. 103307 doi:10.1016/j.oregeorev.2019.103307 | Journal (article/letter/editorial) | | 31 area, Zambia), Kabwe (Zambia), Berg Aukas and Tsumeb (Namibia); 3. Supposedly supergene deposits:...formal description of the mineral from the Altenberg mine (Moresnet, 69 Belgium) and he named the new mineral...(Australia), Kabwe (Zambia) 79 and Berg Aukas and Abenab (Namibia). These deposits occur in Neoproterozoic...re-interpretation) of deposits like Beltana, Vazante, Berg Aukas and 90 Kabwe, where metamorphic grade is very...Belgium (Coppola et al., 2008; Choulet, 2019), Namibia and Zambia 96 (Terracciano, 2008; Schneider et |  | | Report (issue) | | Smithsonite slice and egg, 5.8 and 2.7 cm tall Masua Mine, Carbonia-lglesias, Sardinia, Italy Cal and Kerith...page Smithsonite, 9.2 cm wide 400 Foot Level, Kelly Mine, Magdalena District Socorro County, New Mexico Steve...Greece ion; Scovil photo ne xi repaired) umeb, Namibia ion; Fisher photo �exico; mithsoni Phila Bunks...1867. ·thsonian Smithsonite First Oxide Zone, Tsu Mine, Tsumeb, Nami 10cm tall Brent Lockhart coll Joe...of 10 centimeters! The crystal is from Tsumeb, Namibia, and is on display at the National Museum of Natural |  | Silin, Ivan, Hahn, Klaus, Gürsel, Devrim, Kremer, Dario, Gronen, Lars, Stopić, Srećko, Friedrich, Bernd, Wotruba, Hermann (2020) Mineral Processing and Metallurgical Treatment of Lead Vanadate Ores. Minerals, 10 (2) 197 doi:10.3390/min10020197 | Journal (article/letter/editorial) | | over 65 different minerals, whereas carnotite, descloizite, mottramite, and vanadinite are the most common...0.084 13.6 13.60 South Africa Mapochs Mine Rhovan Mine 1.5 0.52 1.5 1.06 1.60 Generally, VTM...Russia and the Chinese deposit in the Panzhihua region contain resources of 13.6 and 10.4 million metric...recovery from base-metals vanadate deposits are descloizite, mottramite, and vanadinite [20,22]. The lea...their dominant minerals (e.g., vanadinite ore, descloizite ore, mottramite ore, cuprodescloizite ore, etc |  | | Journal (article/letter/editorial) | | MINER.GES. 148 (2003) THE OTAVI MOUNTAIN LAND IN NAMIBIA: TSUMEB, GERMANIUM AND SNOWBALL EARTH by Frank...carbonate successions in the Otavi Mountain Land, Namibia, host a large number of polymetallic (Cu-Pb-Zn)...deposits, and are compared to the ores of Kombat and Berg Aukas. At Tsumeb, local pockets of germanite and reniérite-rich...structure. Massive Cu ore at the Khusib Springs mine is composed of tennantite, enargite, galena and...and Re. Cu-Pb ores at Kombat and Zn-Pb ore at Berg Aukas generally carry lower concentrations of Ge, As |  | Hitzman, M. W., Reynolds, N. A., Sangster, D. F., Allen, C. R., Carman, C. E. (2003) Classification, Genesis, and Exploration Guides for Nonsulfide Zinc Deposits. Economic Geology, 98 (4) 685-714 doi:10.2113/gsecongeo.98.4.685 | Journal (article/letter/editorial) | | Zn, Zambia; 28 = Skorpion, Namibia; 29 = Berg Aukas and Abendab, Namibia; 30 = Padaeng (Mae Sot), Thailand;... In extremely arid climates, such as those in Namibia (Tsumeb deposit: Lombaard et al., 1986; Hughes...exist of tonnages and grades that can be cited Namibia Poland Silesian Crakow district Skorpion Spain...dolostone by smithsonite with minor hematite. Tucson mine, Leadville district, Colorado, United States. b...Massive smithsonite replacing limestone. Wolftone mine, Colorado, United States. c. Coarsely crystalline |  | | 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 |  | | Journal (article/letter/editorial) | | E , M A R C H 1986, VOL. 50, PP. 137-40 The descloizite-mottramite series of vanadates from the Otavi...Bloemfontein, South Africa ABSTRACT. Descloizite, cuprian descloizite, and mottramite from most of the known...K~YWORDS: descloizite, mottramite, X-ray data, Otavi Mountain Land, South West Africa. DESCLOIZITE was named...series exists between zinc and copper, the names descloizite and mottramite being applied to those end members...Bannister and Hey (1933) recommended that the name descloizite should be retained for the Zn-rich varieties |  | Mondillo, Nicola, Boni, Maria, Balassone, Giuseppina, Forrester, Nigel, Putzolu, Francesco, Santoro, Licia (2020) Mineralogy and Genesis of the Kihabe Zn-Pb-V Prospect, Aha Hills, Northwest Botswana. Minerals, 10 (8) 685 doi:10.3390/min10080685 | Journal (article/letter/editorial) | | (Cu-Ag-Ge) prospect is located at the boundary between Namibia and Botswana (Aha Hills, Ngamiland District) in...2020, 10, 685 2 of 26 Mountainland (OML) in Namibia is host to several base metal ore deposits [2]...be grouped into at least four ore types: (1) Berg Aukas-type Zn-Pb deposits in carbonates; (2) Tsumeb-type...the basal Mulden Group [3]. Among these, the Berg Aukas- and Tsumeb-types, both hosted by carbonate rocks...economically most important mineral deposits. Berg Aukas-type deposits are considered to have formed either |  | | Book | | GerhardNiedermayr& Gabi Schneider bode ,rand berg Organ Pipes / Twyfelfontein 7 AiAiba / farm...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 |  | | Journal (article/letter/editorial) | | OTAVI MOUNTAINS, SOUTHWESTAFRICA N. L. MenrHAM, Grootfontein,Soulh West Afri'ca has recently An interesting...the Otavi Valley about 40 miles South West of Grootfontein. Dolomites of the Lower (?) Tsumeb Stage of...malachite, conichalcite, duftite, mottramite, descloizite,dioptase, plancheite, smithsonite and cerussite...mineralisationhas many similaritiesto that of the nearby Tsumeb Mine, the sulfide ores being characterised by an abundance...sulphide ores from the nearby Abenab West and Berg Aukas Mines but it is of rare occurrence and only visible |  | Silin, Ivan, Gürsel, Devrim, Kremer, Dario, Hahn, Klaus M., Wotruba, Hermann (2020) Production of Vanadium Concentrate from a Small-Scale Lead Vanadate Deposit by Gravity Concentration: A Pilot Plant Study. Minerals, 10 (11) 957 doi:10.3390/min10110957 | Journal (article/letter/editorial) | | vanadate ore, mainly containing vanadinite and descloizite was investigated. Based on ore characterizations...vanadate ore; vanadium minerals; vanadinite; descloizite; gravity separation; small-scale processing;...vanadate minerals [18,19]. Mineral Vanadinite Descloizite Mottramite Chemical Composition, % Empirical...(PO4 )3 Cl) and pyromorphite (Pb5 (PO4 )3 Cl). Descloizite and mottramite are hydrated vanadates of copper...copper and zinc, which form an isomorphic series (descloizite group minerals—Pb(Zn,Cu)(VO4 )OH)). The isomorphic |  | Mondillo, Nicola, Wilkinson, Jamie J., Boni, Maria, Weiss, Dominik J., Mathur, Ryan (2018) A global assessment of Zn isotope fractionation in secondary Zn minerals from sulfide and non-sulfide ore deposits and model for fractionation control. Chemical Geology, 500. 182-193 doi:10.1016/j.chemgeo.2018.09.033 | Journal (article/letter/editorial) | | several Zn deposits in Ireland, Belgium, Poland, Namibia, Peru, Yemen and Zambia. The data are compared...several localities in Ireland, Belgium, Poland, Namibia, Peru, Yemen and Zambia (Fig. 1), and compared...is observed in some of the deposits (Belgium, Namibia, Zambia) that may have either a supergene or hypogene... ACCEPTED MANUSCRIPT 2.4. Namibia The Otavi Mountain Land (OML) in Namibia broadly coincides with the...primary sulfide ores have been subdivided into the ‘Berg Au as-type’ (Zn-Pb MVT) and IP ‘Tsumeb-type’ (Pb-Cu-Zn |  | | Journal (article/letter/editorial) | | madeto the importantleadzinc-vanadiumdepositat Berg Aukas, togetherwith other willemite occurrences in... Mountains of South West Africa. At the Berg Aukas Mine exploratorydiamonddrilling hasindicatedsurface...differentto thosenotedin the upper levelsof the Berg Aukas mine and are very similarto thosepreviouslydescribedby...now largelyoxidizedto willemite,cerussite and descloizite. These cavitiespoint to a period of deepwater...expectedthat slowlycirculating waters in an arid region would be in close thermal equilibrium with the |  | | 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 (article/letter/editorial) | | Cardiff CF102HH, Wales 2 Geological Survey of Namibia, Windhoek Abstract: The Tsumeb polymetallic carbonate-hosted...carbonate-hosted replacement deposit in northern Namibia, although now closed, is a world-renowned deposit...through the deposit and during operations into the mine workings, even during early mining, often with different...collections housed in the Geological Survey of Namibia include specimens collected by Hans Schneiderhöhn...museum houses the specimen collection of the last mine manager at Tsumeb, Tony De Beer that comprises excellent |  | | Catalog/List | | 44x40x25mm. £42 £45 4 TENNANTITE, Cooks Kitchen Mine, lllogan, Cornwall. RW Barstow green label. 60x43x18mm...Quartz, Zabytoe Mine, Dalnegorsk, Russia. Crystals to 4.5mm. 63x47x33mm. 8CUPRITE, Caradon Mine, St Cleer...Cornwall. 53x40x24mm. £52 9 DESCLOIZITE and Dolomite, Berg Aukas, Namibia. Glistening xtts to 3mm. 100x52x46mm...80x57x26mm. £62 7 NEPTUNITE and BENITOITE, Gem Mine, San Benito Co., California, USA 75x33x28mm. £68...11 FLUORITE,SPHALERITE, and GALENA, AnnabelLee Mine,Cave In Rock, Illinois, USA Purple cubes to 22mm |  | | Catalog/List | | Visa or Mastercard. 1CALCITE and PYRITE, Trepca Mine, Serbia. (formerly Yugoslavia). Lovely display specimen...2 FLUORITE, Dolomite, Calcite, Pyrite, Boltsburn Mine, Weardale, Co. Durham. Photographed with some UV...crystals to 12mm. 42x29x20mm. £36 4 REALGAR, Getchell Mine, Humboldt Co., Nevada, USA. Vivid scalet red revealed...green label. 110x80x31mm. £84 6 SCHEELITE, Carrock Mine, Caldbeck Fells, Cumbria. Very large crystals for...collection label. 82x52x48mm. £124 8 DESCLOIZITE, Berg Aukas, Namibia. Very rich premier display specimen |
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Berg Aukas Mine, Grootfontein Constituency, Otjozondjupa Region, Namibia