 | | 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...the most important semi-precious stones found in Namibia. The major deposits of these semi-precious stones...Cretaceous granites, as are occurrences of amazonite, aquamarine, heliodor, morganite, dumortierite, milarite...Abstract Introduction 1. Amazonite 2. Beryl 2.1. Aquamarine 2.2. Emerald 2.3. Heliodor 2.4. Morganite 3. |  | | Report (issue) | | SURVEY NAMIBIA 1990 Open File Report MRS 12 2 Abstract Niobium-tantalum mineralisation in Namibia occurs...by-products of Tin-mining operations in central Namibia (Uis, Nainais, De Rust). Prominent niobium-tantalum...pegmatites occur in the Tantalite Valley in southern Namibia and have been mined for a long time on a small...pegmatites 2.1.1.1 Witkop pegmatite 2.1.1.2 White City pegmatite 2.1.1.3 Homestead pegmatite 2.1.1.4 Lepidolite...Lepidolite pegmatite 2.1.2 Sandfontein - Ramansdrift pegmatites 2 1 3 Aukam-Heigums pegmatites 2.2 Rare metal |  | | Journal (article/letter/editorial) | | phoshate mineral associations of the Tsaobismund pegmatite, Namibia Andr6-Mathieu Fransolet l, Paul Keller...one phosphate minerals occurring in the Tsaobismund pegmatite. This investigation is complemented by wet...alteration processes have been recognized in the Tsaobismund pegmatite: (i) the Mason-Quensel sequence results...B-4000 Li6ge 1 Introduction South West Africa, or Namibia, is well known for its numerous pegmatites located...Frommurze et al. 1942), with the description of the pegmatite bodies (Cameron 1955), and with the evolution |  | | Book | | Twyfelfontein 7 AiAiba / farm Anibib 136 8 Grosse Spitzkoppe, Erongo 9 , .,/, loringa tree ...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 |  | | 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...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 |  | | 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 |  | Gonçalves, , Melgarejo, , Alfonso, , Amores, , Paniagua, , Neto, , Morais, , Camprubí, (2019) The Distribution of Rare Metals in the LCT Pegmatites from the Giraúl Field, Angola. Minerals, 9 (10) 580 doi:10.3390/min9100580 | Journal (article/letter/editorial) | | Abstract: The Giraúl granitic pegmatite field in Angola is composed of five pegmatite types, the most evolved...the evolution of the pegmatites and within each pegmatite body from border to inner zones, and especially...ceramics) or gemstones such as topaz, tourmaline, aquamarine, spodumene, among others [2]. The study of Nb-Ta...minerals is quite characteristic in granites and pegmatite rocks and gives us information about their petrogenesis...processes [12,13]. However, in the late processes of pegmatite evolution, such as those that form albitites, |  | | Journal (article/letter/editorial) | | . . . . . . . . . . . . . 66 68 68 68 69 74 75 85 88 89 89 89 93 93 94 97 97 97 98 107 107 118 118...Benstonite Berborite Berthierine Bertrandite Beryl, aquamarine, heliodor, goshenite, morganite, rosterite, bixbite...the Alpine region, and (3) Mid-Triassic to early Jurassic extension in the extra-Alpine region. Isotope...biotite, perovskite, apatite, calcite, and oxides. Pegmatite is a very coarse-grained igneous rock with a grain...syenite Nephelinite Norite Novaculite Okaite Pegmatite Pelite Peridotite Phonolite Phoscretes Phosphorite | | | Journal (article/letter/editorial) | | . . . . . . . . . . . . . 66 68 68 68 69 74 75 85 88 89 89 89 93 93 94 97 97 97 98 107 107 118 118...Benstonite Berborite Berthierine Bertrandite Beryl, aquamarine, heliodor, goshenite, morganite, rosterite, bixbite...the Alpine region, and (3) Mid-Triassic to early Jurassic extension in the extra-Alpine region. Isotope...biotite, perovskite, apatite, calcite, and oxides. Pegmatite is a very coarse-grained igneous rock with a grain...syenite Nephelinite Norite Novaculite Okaite Pegmatite Pelite Peridotite Phonolite Phoscretes Phosphorite |  | | Book | | another oxide, "yttria", from minerals found in the pegmatite at Ytterby, Sweden. Both supposed oxides were...Swedish ehernist Ekeberg in the eourse of analyzing pegmatite minerals from Ytterby, Sweden and Kimito, Finland...minerals from the same loeality, the farnaus pegmatite at Ytterby, Swcden. This faet stresses the geoehemieal...(with 3 Figures) . . 189 Characteristics of Pegmatite Deposits of Tantalum. P. Cerny (with 18 Figures).... 266 Exploration Strategy and Methods for Pegmatite Deposits of Tantalum. P. Cerny (with 15 Figures) |
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