 | | Report (issue) | | MINISTRY OF MINES AND ENERGY GEOLOGICAL SURVEY NAMIBIA I 1990 Open File Report MRS 05 2 Abstract A...wide variety of semi-precious stones occur in Namibia, namely amazonite, the beryl varieties, chrysocolla...cordierite, dioptase, dumortierite, pyrophyllite, the quartz varieties the garnet varieties, milarite, including...rose quartz and smoky quartz are currently the most important semi-precious stones found in Namibia. The...turquoise. An extensive deposit of amethyst occurs in quartz-calcite veins in rocks of the Swakop Group. Druses |  | | 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...Copper Deposits The South The Pegmatitesin Central Namibia Luderitz and the Diamonds 44 49 241 254 272 275... Encyclopedia of the Mineralsof Namibia 443 Meteorites in Namibia Bibliography Index Photo credits |  | | Journal (article/letter/editorial) | | student and had managed to find a summer job in Namibia. The geologist in charge of our camp was an ardent...home to South Africa with a few specimens from Namibia. I couldnāt tell a dioptase from a cerussite at...contributions he had made to the mineralogy of Namibia. When Tsumeb was at its zenith (for some), Sid...collector had to see in Namibia. From relatively humble beginnings in the hotel at Usakos before the Second...Second World War, to the Usakos Gem Store he owned in the postwar period, Sid advanced to become the main dealer |  | | Journal (issue) | | Articles Famous mineral localities: The Erongo Mountains, Namibia . . . . . . . . . . . . . . . . . . ....cm, with schorl and feldspar, from the Erongo Mountains, Namibia. Desmond Sacco collection; Bruce Cairncross...on the mineralogical treasures of the Erongo Mountains in Namibia. Uliās financial support made possible...Rhodesia (Zimbabwe) and Tsumeb, Southwest Africa (Namibia). He had a mini-van-like truck loaded with minerals...SMALE Famous Mineral Localities: g{x Erongo Mountains Namibia Bruce Cairncross Department of Geology |  | | Catalog/List | | the Tsumeb Mine (as well as other mines of the region) were still in production in the 1970s. You will...climbing soon brought him into contact with the quartz crystals that were found on the mountain slopes...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...Ianās interest stems from the family trips to Namibia, including the mines of Tsumeb. He worked with |  | | 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 |  | Ashworth, L., Kinnaird, J.A., Nex, P.A.M., Harris, C., MĆ¼ller, A.B. (2020) Origin of rare-element-mineralized Damara Belt pegmatites: A geochemical and light stable isotope study. Lithos, 372. 105655pp. doi:10.1016/j.lithos.2020.105655 | Journal (article/letter/editorial) | | leucogranites (SLGs) of the Jo ur Damara Belt, Namibia, although coeval, are variably mineralized and...Crystallization temperatures calculated using Ti-in-quartz and O-isotope 1 Journal Pre-proof thermometry...1979; Kontak and Kyser 2009). The Damara Belt of Namibia provides an ideal na setting in which to study...Geology The northeast-trending Damara Belt in Namibia forms part of the Neoproterozoic Damara Orogen...and south-trending Gariep Belts in Swakopmund, Namibia, which together record successive phases of rifting |  | | Journal (issue) | | worldwide. However, most of the interest in this region lies in commercial amazonite collecting; very few...Micro-Ibso adapter and shutter. The rutile on smoky quartz photo was taken with an Ortholux-I microscope...epizonal batholith, of a primarily granitic to quartz monzonitic composition, that is exposed over an...intrusive body composed primarily of coarse-grained quartz, feldspar, and mica, that was emplaced during a...the amazonitic variety of microcline, albite, smoky quartz, goethite, topaz, zinnwaldite (a phyllosilicate |  | | Journal (article/letter/editorial) | | sheeted leucogranites within the Damara Orogen, Namibia J. A. Kinnaird* and P. A. M. Nex Uranium mineralisation...southern Central Zone of the Damara Orogen in Namibia; at RoĢssing, Valencia, the Ida Dome and Goanikontes...variable in texture, consisting essentially of quartz and feldspar with ,5% mafic minerals, and range...Formation boundary. Keywords: Granite, Mineralisation, Namibia, Uranium Since 2004, the development of new nuclear...exploration and particularly in southern Africa. Namibia constitutes a uraniferous province with known uranium |  | | Journal (article/letter/editorial) | | an adventure of a lifetime. Spend two weeks in Namibia, a country of striking scenery, exotic animals...reserves in Africa. Namibiaās mineral depositsāTsumeb, Erongo, Brandberg, Klein Spitzkoppe, and othersāare world...felt that additional days should be scheduled in Namibia to offset the time (and expense) spent on the long...their spouses, and four other friends. Our tour of Namibia and South Africa was now extended for a third week...Mineral Safari to the remote southwestern corner of Namibia. We decided to rent vans and depart the safari |  | | Journal (article/letter/editorial) | | that have been found in the gold-washings in the region of the Sanarka river. e L. J. Spencer, Euelase...stained. The centre of the dike consists of massive quartz, and the country-rock is gneiss. The crystal was...S o u t h - W e s t Africa. microcline and smoky-quartz. They show au equal development of the two rhombohedra...much like the bipyraminds of quartz only flatter. The crystals on quartz show these forms alone, but those...crystals are scattered over the surfaces of the quartz and microcline, but on the latter there are also |  | | Journal (issue) | | Lee from SMLS, delayed his fishing holiday to Namibia for a day (yes - FISHING!!) in order to give a...gemmy dioptase on calcite from the Tsumeb Mine, Namibia. Many thanks to SMLS members, Show dealers, exhibitors...knack of always choosing the wrong queue. Even in Namibia my judgement was as consistent as ever with the...dissected by gleaming white lenses and veins of quartz. There was no time to explore the potential: we... including dinosaurs, which could be found in Namibia. We could not leave without a quick look at some |  | | Journal (issue) | | field divide, so we started out, encouraged by quartz in flints which were sparkling in the sun, including...specimens as well as micros of prehnite, calcite and quartz. We will have to wait until the competition to...locations. Principally there are quantities of quartz, smoky quartz, cassiterite, amethyst, fluorite, autunite...fine sample of rutile and tourmaline inclusions in quartz cabochons. It was especially nice to see samples...came second with three specimens: the first was quartz, tourmaline and opal from Gunheath china clay pit |  | | Journal (issue) | | Thirty-three, Number Four Articles Jeremejevite from Namibia . . . . . . . . . . . . . . . . . . . . . . . ...Libethenite (Zambia), v.10/#1 Hydroxylherderite Quartz & Pyrite (WA), (Brazil), Bookson U.S. Hydroboracite... v.14/#1 Celestite (IN), v.13/#4 Diamond (CO), Quartz Derbyshire (England), (MT), Jeanbandyite. $12 Bancroft... $12 v.10/#3 Taewha mine (Korea) Japan Twins (Quartz), Bancroft (Ont.), Franklin $12 v.12/#1 Iceland...22/#6 Wagholi cavansite (India), Kombat mine (Namibia), Madan mines (Bulg.),Beltana mine $12 v.23/#1 |  | | Report (issue) | | phosphate type pegmatites, beryl is associated with quartz, microcline, albite, muscovite, biotite, ferrocolumbite...Alpine and hydrothermal veins, it is found with quartz and feldspar. In topaz rhyolites where red beryl...beryl is found, topaz, high-temperature quartz, and bixbyite are common associates of beryl. Alteration...2.87 1 (50) A bove: Beryl, topaz, a/bite, and quartz; 15 cm from the Shigar Valley, Skardu district...2) species. Low pH fluids (pH~2-3) result in quartz as the dominant alteration product. A pH of 4-5 |  | | Journal (issue) | | JanuaryāFebruary, 2020 7 Mark Candee Rose quartz with smoky quartz on feldspar, 10.1 cm, from the Berilo...mine, Ruoqiang County, Bayinguoling Autonomous Region, Xinjiang, China. Ken Donn photo. Azurite ārose...Ken Donn photo. Gold, 3.4 cm, from the Colorado Quartz mine, Colorado district, Mother Lode Belt, Mariposa...Scovil photo. Prehnite, 13 cm, from Sandare, Kayes Region, Mali. Jeff Scovil photo. 10 Supplement to The...Jeff Scovil photo. Quartz on chrysocolla, 13 cm, from Inca de Oro, Atacama region, Chile. Jeff Scovil |  | | Journal (issue) | | Lab Notes ā¢ Bromellite ā¢ Charoite inclusions in a quartz-feldspar rock ā¢ Altered vs. natural inclusions...Hemimorphite from Congo ā¢ Jeremejevite from the Erongo Mountains, Namibia ā¢ New morganite mine in Madagascar ā¢ Namibian...encountered in Namibia ā¢ Plastic and steel pearl imitations ā¢ Gem cutting factories in Namibia ā¢ Conference...states were transported by glaciers from a specific region in Canada (the James Bay Lowland; figure 3). Isolated...multiple sources in the Lake SuperiorāLake Huron region, but rejected the James Bay Lowland because of |  | | Journal (article/letter/editorial) | | side of the crater were fields of completely white quartz stones, some in round shapes, that shone beautifully...the dry creek beds near by we found some clear quartz crystals. Windhoek is a modern city surrounded...rutile sum desert roses from the Luteritz area in quartz, the specimens being 2"x2" one the Namib desert...mined. This area is, also, rich in yellow and rose quartz, moss agates, deep blue chalcedony, beryl and tantalite...: h T h e fat little trees 10 miles north of Karibib, South West Africa. This is the area of tourmalines |  | | Book (edition) | | malachite p. 86; A.C.G. Hutchings, Cape Town, clear quartz p. 17; and Bob Binnell, dioptase p. 86. Cover...splendid specimen of wulfenite from Tsumeb, Namibia Half-title: Quartz, Nababeep Opposite: Mimetite, a typical...Overleaf: Crystalline incrustations of vanadinite, Namibia Contents Acknowledgements 6 Authorās Preface...attached list of working mines. The geological map of Namibia which shows the mines and also farm boundaries...softest) gypsum calcite fluorspar apatite feldspar quartz topaz corundum diamond (the hardest) As a rough |  | | Journal (issue) | | Pinch Famous mineral localities: Klein Spitzkoppe, Namibia . . . . . . . . . . . . . . . 317 by B. Cairncross... from O Stope, 31st Level of the Tsumeb mine, Namibia. William Pinch collection; Jeff Scovil photo. For...the previous find. The only associated mineral is quartz. The pictured piece has a number of fine crystals...Record, 13, 137ā147. KELLER, P. (1984) Tsumeb, Namibia, eine der spektakulƤrsten Mineralfundstellen der...wilensky Cuprian SMITHSONITE, 12.5 cm, Tsumeb, Namibia. Stuart & Donna Wilensky #127 Sullivan Street |  | | Journal (issue) | | Calcite-Kevin & Mark Brown collection, page 52; Smoky quartz gwindel-Brent Lockhart collection, page 175;...unearthing many fine specimens of gadolinite, smoky quartz, fluorite, feldspar in crystals to five feet...Streeter, R. L. Parker found a piece of "heavy quartz" in a stream bed. lt proved to be topaz from a...cutting coarse-grained reddish granites of the hilly region thereabouts, known geologically as the Llano Uplift...medium-violet arnethyst crystal specimens from quartz veins. And textbook-sharp, colorless and transparent |  | | Journal (issue) | | northern face of the quarry there is a band of dark smoky calcite whicn makes attractive cleavage specimens...from the baH ti the tree. It will pa11 thru the smoky catcite vein . ] lALS sss ROCKS AND MINERALS...third class road ite which tho it looks similar to quartz bears right and runs northeast to an in- has a...west bank of the Connecticut River and east of a region of hills known as the Berkshires. None of the lead...from the center of Northampton. In the Loudville region more than fifty shafts and prospe-:t holes have |  | | Report (issue) | | a peculiar quartz-diopside rock type that consists of abĀ solutely white diopside, quartz and calcite...the Sludyanka complex in the southern Lake Baikal region of Russia. Six New Species Today, this team has...phengite, tainiolite, vanadium-bearing muscovite, quartz and dolomite from the Onega depression, Central...from the Mikhaylovskoye Mine in the Transbaikal Region of Russia is 4.5 cm tall, and is in the Dave Bunk...A 32.8 cm tall elbaite specimen with associated quartz and albite from Pech, Afghanistan. Bruce Oreck |  | | Journal (issue) | | Rubtsovskoye deposit and recent finds in Moscow region have included in the issue. Project Leader Editorial...Novikov, New Findings of Minerals in the Moscow Region .....................85 Internet Directory .....twins from Schlaggenwald in Bohemia, a large smoky quartz crystal from the Tyrolean Zillertal and a large...totally clear topaz crystal, grown on a group ofsmoky quartz and cleavelandite from Alabashka pegmatite field...totally clear topaz crystal is grown on a group of smoky quartz and cleavelandite, with original label. Photo: |  | | Book | | (clockwise from top left): Quartz Citrine crystal; Fluorite; Vanadanite; Quartz crystal (see text for details)...Republic, 6 cm). Figure 1.2 Halite crystals (Namibia, 5.8 cm). 6 section devoted to the display of...in groups 8ā12, show marked deviation. In this region of the Periodic Table, electronegativity increases...bonded substances, the electrons are confined to the region between the nuclei of the bonded atoms and they...together only by the attraction of Figure 4.1 The quartz crystals (right) are bounded by flat surfaces, |
|
