 | | Journal (article/letter/editorial) | | MOORE 445 COMPARATIVE STUDY OF THE ONGANJA COPPER MINE, NAMIBIA: A LINK BETWEEN NEOPROTEROZOIC MESOTHERMAL...MESOTHERMAL CU(-AU) MINERALIZATION IN NAMIBIA AND ZAMBIA J.M. MOORE Geology Department, Rhodes University...Geological Society of South Africa ABSTRACT The Onganja copper deposit is hosted by quartz-biotite-plagioclase...Formation in the Southern Zone or Khomas trough of the Damara Orogen in Namibia. It comprises a sheeted-vein...enrichment is related to the African erosion cycle. The Onganja copper deposits formed from NaCl-CO2-rich metamorphogenic |  | | 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...Ianâs 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 |  | | Book | | AiAiba / farm Anibib 136 8 Grosse Spitzkoppe, Erongo 9 , .,/, loringa tree . Khomas Highland...Mountainland The Central Northern to Northwest Region including Damaraland The Central Namib Desertand...South-CentralDeposits Onganja Mine and Surrounding Copper Deposits The South The Pegmatitesin Central Namibia Luderitz... 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 |  | | 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unpublished.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) | | Guanajuato (Mexico) and has become the richest silver mine in the world, in more recently Bou Azzer and Imiter...ceased vein. The San Juan production by the de Rayas mine in time of World War II. Guanajuato also In 1946...very city In Morocco, the of Oberschlema Bou Azzer mine, itself, which finally already very had to be relocated...and east of Schlema, 2014 Tucson show. The Imiter mine began its modern producing many quality specimens...outcrop themâ. next to the La Estrella The most famous mine, in Pardos, locality for this type Guadalajara (Spain) |  | | Journal (issue) | | with Mimetite on Barite 5.1 cm, from the Rowley mine, Maricopa County, Arizona. Dick Morris collection;...explore literally thousands of mineral occurrences, mine dumps and abandoned mines in the public domain administered...Heintzelman (1805-1880) shipped ore specimens from his mine to be exhibited at the Cincinnati Merchant's Exchange...later when Edwin Over paid a visit to the Red Cloud mine and made one of history's most spectacular wulfenite...discovery at tbe Red Cloud mine, Ed Over moved on in 1939 to investigate tbe Hilltop mine in Cochise County. |  | | Journal (issue) | | the Unificada mine, Potosi, Bolivia. Top right: Benitoite, 2 cm, from the Benitoite Gem mine, California...NâChwaning I mine, Kuruman, South Africa. Bottom right: Mimetite, 2.7 cm, from the Tsumeb mine, Namibia. Back...Record: (1) Stephanite, Husky mine, Canada. (2) Wulfenite, Rowley mine, Arizona. (3) Diaspore twin, Pinarcik...Adelaide mine, Tasmania. (5) Andradite, Antetezambato, Madagascar. (6) Calcite, Mashamba West mine, Congo...Afghanistan. (8) Scorodite, Tsumeb mine, Namibia. (9) Shigaite, NâChwaning II mine, South Africa. v This special |  | | Book | | tiideto the THREE PHASES OF TITAN Rutile Anatase Brookite RobertJ. Lauf Đ About the Author he author...three common titanium dioxide minerals, namely, rutile, anatase, and brookite. For completeness, mention...world, making it of great interest to collectors. Rutile is of some interest to the lapidary artist as well...begins with an explanation of the structures of rutile, anatase, and brookite and their phase relations...Shop. Introduction he titanium oxide minerals rutile, anatase, and brookite are well known to mineral |  | | Journal (issue) | | Rhodonite, 4.7 cm, from the 1700 level, Zinc Corporation mine, Broken Hill, New South Wales, Australia. Collection...collection, John Chapman photo. âą 2.5 cm, Top Camp mine, Western Ausytralia. George Stacey collection, Jeff...Scovil photo. Middle row from left: âą 2.3 cm, Kintore mine, Coolgardie, Western Australia. Aloe Family collection;...spent the rest of their lives there as miners and mine captains. Cornish tradition favored the collecting...build his mineral collection. His job at the Moonta mine was sampling ore for the companyâs assay office |  | | Journal (article/letter/editorial) | | (Sverige) Aln6 lsland, titanomagnetite, 265 Brattfors mine, Nordmarks Odalffalt, Viirmland, manganhumite, katoptrite...Gutter, Brook, Hampshire, glauconite, 373 Mill Close mine, Darley Dale, Derbyshire, corundophilite, I7I Seathwaite... 373 Turf Pits mine, Grassington, Yorkshire, spencerite, I76 Cornwall Botallack mine, digenite, I72 Carn...pseudomorphous after analcime, 245 INDEX Geevor mine, neotocite, 279 and M26 Luxulyan, luxullianite (in...apatite, hornblende, diopside, 427 South Terras mine, St. Stephen-in-Brannell, francevillite, I72 Stamps |  | | Journal (issue) | | Acanthite with silver, 2.6 cm, from the Uchucchacua mine, Peru; Allan Young collection and photo. Amethyst...collecting has flourished throughout the Northwest region in recent decades; a history of the mineral discoveries...the estate. Many early minerals collected in the region about Spokane, Washington, are represented in the...Alaska, ca. 1906. She organized her own company to mine the garnets, and may have distributed thousands...that men would be hired as laborers to work the mine and help develop it, but that no men would be involved |  | | Book (edition) | | leading to an exsolution process (e.g., hematite, rutile, and ulvöspinel separating from ilmenite). Fe-...differentiated. Thus, oriented exsolution lamellae of rutile, ulvöspinel or ilmenite may occur in titanomagnetite...myrmekitic rutile exsolution (slightly lighter grey) in ilmenite matrix (even grey surrounding of rutile). Post-magmatic...Gallite Pseudobrookite Erdite pink to orange 22 Rutile Digenite orange to brownish light blue-grey;... Mineral Descriptions Molybdenite in Graphite; Bogala Mine, Sri Lanka 51 Copper, native Synonym(s): Cuivre |  | | Journal (issue) | | Pyromorphite from the Bunker Hill mine, Idaho; Wulfenite from the Red Cloud mine, Arizona; Calcite and Fluorite...Fluorite from the Elmwood mine, Tennessee; Aquamarine from Pakistan; Wire Silver from Kongsberg, Norway;...in Calcite from the Tsumeb mine, Namibia; Novacekite from the Brumado mine, Brazil; Elbaite from Nuristan...from Mogok, Burma; and Emerald from the Coscuez mine, Colombia. OUTSIDE BACK COVER: Beryl crystals: heliodor...aquamarine (right), 5.1 inches, from the Pioniera mine, Minas Gerais, Brazil; Freilich Collection. ⊠4 |  | | Journal (article/letter/editorial) | | Smithsonite. (7 Ă 4 cm; D49972), Broken Hill Proprietary mine, Broken Hill, New South Wales. Prospect dolerite...Figure 6. Anglesite (5 Ă 3 cm; D49920), Proprietary mine, Broken Hill, New South Wales. Figure 7. Pyromorphite...(4.7 Ă 3 cm; D49966), 17 Level, Zinc Corporation mine, Broken Hill, New South Wales. specimens from these...10. Malachite (32 Ă 21 cm; D50673), Great Cobar mine, Cobar, New South Wales. pounds (Henley 1988)....thanks to contacts he made with both the miners and mine managers. However, it was in the Broken Hill pubs |  | | Journal (issue) | | indhoek and about 30 km north o f the tow n of Seeis. T h e site is at an altitude o f 1800 m eters on...considered to be the northerly extension o f the Khomas H ighland. H ere a num ber o f small copper and...) â »' 1 *% ^° \ O I > % si Y /N e /V © i X Farm boundaries / â * Rivers X o1 I i Otjizonjati...,6 $ Copper prospect . r-f e *â ^ Abandoned mine t i jf :ia 10 ..A Xi / â r" ' CO tO ' i %... j Vs Thorn Tree ; mine âą_ f s ,--'v '1 / âą â> i Otjozonati ; \ Okamuvia ; ) mine \ ; 144 i kilometers |  | | Book | | 248: Quartz (amethyst variety), Erongo Mountains, Namibia * 5 x 6 x 3 cm Page 251: Calcite, Irai, Rio Grande...Nesosilicates Wace = J... saree ene ale eee 235 Chapter 6 Phosphates, Arsenates & Vanadates ....that then serves to protect and preserve them. Rutile inclusions in quartz are a good example. Growth...hundred kilometers. Most of them orbit the Sun in a region called the asteroid belt, which is between the...mineral pigments. LEFT: Malachite, Bwana MâKubwa Mine, Ndola, Copperbelt, Zambia * 22 x 26 x 16 cm 22 |  | | Catalog/List | | Dykstra 16601; Samuel Foose 11727; Alissa Ford 17104; Helen Goblirsch 17508; Kathleen Guzman 16142; Gregory...A beautiful Crystallized Gold from the â16-to-1â Mine âą A huge cut and polished Apache Agate weighing...Meteorite Slice Iron - IAB Complex Novosibirsk Region, Russia - (54° 20âN, 84°12âE) The find of the Maslyanino...Meteorite occurred on May 25, 1992 in the Novosibirsk Region of Russia, when an agronomist discovered a 26 kg...likely before settlers arrived in the Ryazan Oblast region in 1200. Classified as an Ataxite, it is an Iron |  | | Journal (issue) | | MINERALS Red Lead Mine: J. Halpern specimen. J. Scovil photo. In this issue also: a new chapter J...26 Miner George Quist in front of the Red Lead mine portal after a long day of specimen extraction....the Red Lead mine, Tasmania, Australia. Thanks to a successful partnership between mine owner Shane Dohnt...and specimen mining company Collectors Edge, the mine was reopened for specimen mining in 2013. The last...recent huge âRed River Pocketâ finds in the Adelaide mine, the Brilliant red-orange color, superior luster |  | | Catalog/List | | Ogonja Mine (Onganja Mine; Emke Mine; Emka; Otjisongati) Ogonja (Onganja), Seeis, Windhoek District...District, Khomas Region Namibia This faceted Cuprite is from a top locality in Namibia for the type. The incredible... Ogonja Mine (Onganja Mine; Emke Mine; Emka; Otjisongati) Ogonja (Onganja), Seeis, Windhoek District...District, Khomas Region Namibia This colossal Cuprite gemstone was cut from gemmy rough mined from Namibia. This...Gemstone: Rhodochrosite - 11.94 Cts. Sweet Home Mine Mount Bross, Alma District, Park Co. Colorado, USA |  | | Thesis/Dissertation | | Engineering ii ABSTRACT The Kansanshi Cu-(Au) mine exploits a structurally controlled deposit hosted...southern Africa. It is currently the largest active Cu mine in Africa, with a total endowment of nearly 12 Mt...Kansanshi antiform. The deposit occurs within the Domes region of the Central African Copperbelt, where amphibolite...Domain is separated from the overlying Kansanshi Mine domain by the Evaporitic Sequence, a >300 m thick...of vanished evaporites. The base of the Kansanshi Mine domain is represented by the Dolomitic Sequence |  | | Book | | [(OH)5 (P04)4]' 6 H20 (monoclinic, brown) RotlÄufchen Mine near Wetzlar/FRG Original size 5 x 6 mm ISBN-13:...mines. The deepest mine shafts are those of the gold mines in the Witwatersrand region, near Johannesburg...chemical processing. Large quantities of silver, in the farm of chlorides and bromides, are consumed in the photographic...century. Its thatched 3 Native Gold on Quartz Grace Mine, Ontario/Canada Original size 19 x 30 mm Isometric...in 1849, as did the discoveries in the Klondike region, Yukon River, Alaska. Only 2 years later, in 1851 |  | | Catalog/List | | highly transparent smoky quartz box having golden rutile needle inclusions. The interior of the lid is lined...11 x 16in $1,500 - 2,000 2045 AZURITE Tsumeb, Namibia A large azurite rose, with only one or two points... 2047 2047 CRYSTALLIZED AZURITE Milpillas Copper Mine, Milpillas, Sonora, Mexico A small cabinet specimen...OFFICIAL STATE GEMSTONE OF CALIFORNIA Benitoite Gem Mine, San Benito County, California Around the turn of...kept up with demand. Its only source was a small mine in San Benito County in northern California which |  | | Book | | (Pty) Ltd Publisher: Pippa Parker Managing editor: Helen de Villiers Editor and indexer: Tina Mössmer Project...Republic, 6 cm). Figure 1.2 Halite crystals (Namibia, 5.8 cm). 6 section devoted to the display of...(field of view 8 cm). Figure 1.3 An opencast iron ore mine (Postmasburg, South Africa). 7 microscopes, or...78 Pt 82 Pb 81 Tl 84 Po 83 Bi 85 At 86 Rn 235 198 169 144 134 130 128 126 127 130 134 149 148 147...in groups 8â12, show marked deviation. In this region of the Periodic Table, electronegativity increases |  | | Book | | should be of specimens from localities within the region of that museum, or at least from the country concerned...acquisitions, pseudomorphs, and minerals from Tsumeb, Namibia. On the whole, the lighting and labelling are good...Tsumeb, Namibia Grube Wolf, Herdorf, FRG Alston Moor, Cumberland, GB Tsumeb, Namibia Tsumeb, Namibia Tsumeb...Tsumeb, Namibia Ehrenfriedersdorf, Saxony, GD R Christian-Levin, Essen, FRG Hagendorf, Oberpfalz, Bavaria...particularly interesting collection of miners' lamps and mine surveying instruments. Ancient and mediaeval mining |  | | Journal (article/letter/editorial) | | is the well-known pyrite âsunâ from the Ziegler mine, Randolph County, Illinois. This 7.4-cm specimen...provenance, and perhaps even polesâ of the Cochran mine, Georgia; and the magnificent and Geography âwhoââthose...Swakopmund, Namibia. The 14,100-kilogram group of quartz crystals is from the Otjua mine, Namibia. Tony Kampf...and above). Two photographs of the same Rogerley mine, England, fluorite specimen: in artificial light...malachite after azurite crystals from Tsumeb, Namibia, and from Bisbee, Arizona; malachite after cuprite |
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Onganja Mine, Helen Farm 235, Seeis, Windhoek Rural, Khomas Region, Namibia