 | | 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...Complex and sodalite is a constituent of rocks of the Kunene Anorthosite Complex. The Namibian output of semi-precious...Introduction Since the German colonial period Namibia has been well known for the occurrence of semiprecious |  | | Journal (article/letter/editorial) | | 15:29 06 November 2014 Spessartine Marienfluss, Northern Namibia I n a recent issue of this magazine...end, a fine spessartine specimen from Marienfluss, northern Namibia, has been chosen. Spessartine, because...spessartine crystal on matrix from Marienfluss, northern Namibia. Houston Museum of Nature and Science...associated minerals are beryl, apatite, albite, muscovite, potassic feldspar, and quartz in the former,...Scovil photo. Figure 15 (right). Spessartine and muscovite from Shengus, Haramosh Mountains, Northern Areas |  | | Journal (article/letter/editorial) | | Bahmann, U., Raspite from the Erongo Mountains, Namibia, 272â74 Baileychlore, 319 Bailey, D. G., see Thirty-sixth...Cairncross, B., Raspite from the Erongo Mountains, Namibia, 272â74 Calaverite, Cripple Creek, Colorado, R...Collectorâs Note, Raspite from the Erongo Mountains, Namibia, B. Cairncross, H. Van Niekerk, C. Reineke, U....Autonomous Region, China, R. B. Cook, 242â48; Spessartine, Marienfluss, Northern Namibia, R. B. Cook...Fish: Life in the Ordovician Sea of the Cincinnati Region, J. St. John, 467â68; Studies on Agate: Microscopy |  | | Book | | Mountainland The Central Northern to Northwest Region including Damaraland The Central Namib Desertand...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...__ Republic of Namibia The President State House W°Ntdhoek FOREWORD Namibia is endowed with an...from near and far. Fine mineral specimen from Namibia are displayed in all the famous natural science |  | Gray, David R., Foster, David A., Goscombe, Ben, Passchier, Cees W., Trouw, Rudolph A.J. (2006) 40Ar/39Ar thermochronology of the Pan-African Damara Orogen, Namibia, with implications for tectonothermal and geodynamic evolution. Precambrian Research, 150 (1) 49-72 doi:10.1016/j.precamres.2006.07.003 | Journal (article/letter/editorial) | | thermochronology of the Pan-African Damara Orogen, Namibia, with implications for tectonothermal and geodynamic...hornblende and whole rocks from the Damara Orogen, Namibia revise and refine the regional perspective on cooling...orogenesis; Damara Orogen; 40 Ar/39 Ar thermochronology; Namibia â Corresponding author. Tel.: +61 3 83446931;...thermochronologic studies in the Damara Orogen of Namibia (Fig. 1) have suggested complex deformational,...collisional triple junction nature of the Damara Orogen, Namibia. (b) Geologic map of the Damara Orogen showing |  | | 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 (issue) | | Barcelona, Spain 544-550 Shattuckite, Kunene District, Kaokoveld, Namibia 557-558 Collecting at Hallelujah...veszelyite 58-60 Sur quelques occurrences de muscovite en Bretagne ï· AMERICAN MINERALOGIST 94(11-12)...gemstones from Canada 50-59 Spessartine from Marienfluss, N-Namibia 60-61 Campbell Bridges (1938-2009) 66-72...Harz 42-43 Philipsburgit aus der Tsumeb-Mine, Namibia 44-46 Natrolith vom Hohentwiel 47 Bestimmung der...Marokko 78-90 Mineralien aus Schörfen im Kaokofeld, Namibia 91-96 Achat Magazin 189 De column van Cronstedt |  | | Book | | Republic, 6 cm). Figure 1.2 Halite crystals (Namibia, 5.8 cm). 6 section devoted to the display of...in groups 8â12, 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...showing stepped, cubic crystal faces (Erongo, Namibia, 5.8 cm). hence occurs less commonly. Figure 4...Kayes region, Mali); (C) grossular (Jeffrey mine, Canada, 5.6 cm); and (D) spessartine (Marienfluss, Namibia |  | | Journal (article/letter/editorial) | | in the concentration processes of diamonds in Namibia (Section 3.8). Aeolian processes come into effect...chlorite-talc schists (metabasic rocks are overlain by muscovite-biotite schists. The emerald deposit gradually...(metabasicpasses rocksinto arethe overlain by muscovite-biotite schists. The(Photograph: emerald deposit...prominent river in the region as âKunene Garnetâ was mined in the Marienfluss-Hartmannberge claims, an...alluvial-fluvial sediments of the Cuvelai-Etosha Basin, Namibia, close by [87]. Grossular originating from metacarbonate |  | | Book | | coppercrystals come from many localities like Tsumcb, Namibia and Chessy. France. Crystals up to 140mm (5'A in)...to 15 mm ("/» in) come from Konder in Khabarovsk Region, small crystals, but mainly nuggets, weighing up...aggregates are found in Sri Lanka (Radegara, Galle region). Accumulations in Buckingham and Grenvillc, Quebec...(Diamantina, Minas Gerais), Congo. Angola and Namibia were found in placer deposits. Diamonds of industrial...Bor. Serbia; Bisbee, Arizona. USA and Tsumeb, Namibia. Application: important Cu ore. Djurleite Cu |  | | Book | | coppercrystals co1ne from many localities like Tsumeb, Namibia and Chessy, France. Crystals up to 140mm (5Âœ in)...15 mm (1 9h2 in) come from Konder in Khabarovsk Region, small crystals, but mainly nuggets, weighing up...aggregates are found in Sri Lanka (Radegara, Galle region). Accumulations in Buckingham and Grenville, Quebec...Bor, Serbia; Bisbee, Arizona, USA and Tsu1neb, Namibia. Application: important Cu ore. Djurleite Cu31S16...Montana; Bisbee, Arizona, USA), also in Tsumeb, Namibia, together with chalcopyrite, pyrite and other minerals |  | | Journal (issue) | | idealized diagram of the occurrence of opal in this region).The sandstone is usually overlain by a silcrete...Photomicrograph by Shane F. McClure; magnified 30x. plus the region beneath, where less of the chromium has penetrated...Riissia. The ddferent rapalzivi granites in the region vary between 1,650 and 1,700 million years (My)old...inicrocline, albite, quartz, biotite, and, locally, muscovite. The mineralogy of both the border and wall zones...K-feldspar: - Microcline - Orlhoclase Albite Biotite Muscovite Chlorite Belyl Topaz Berlrandite Oxides and others |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | Huantaya(*), Chanarcillo(*), and Chanca, Chile; Tsumeb, Namibia. BM DI:96, R:313, P&J:71, ABI:475. 1.1.1.3 Copper...Broken Hill mine, Zambia; Onganja mining district, Namibia. Andacolla, near Coquimbo, and Chuquicamata, Chile;...nm); weakly anisotropic. Bolshoi Anyui R.., Kolyma region, Russia, in gold-bearing alluvium. sm MZ 11(4):88(1989)...VHNjo9 = 260. R = 55.3 (540 nm). Magnetic. Kumak region, Southern Ural Mts., Russia, in quartz veins with...VHNjo9 = 900. R = 58.8 (540 nm). Magnetic. Kumak region, Southern Ural Mts., Russia, in quartz veins with |  | | Journal (issue) | | water pools and scorching soil: This marvelous region (Plutonian realm) was discovered in 1847 by Mr...Great Valley sequence in The Geysers-Clear Lake region of northern California. In Field Trip Guide to...magnetic studies o f The Geysers-Clear Lake geothermal region, California. U.S. Geological Survey Open File Report...reminiscent of the color of the rhodochrosite from the region. A few tightly packed sprays are a deep wine red...occurrence of well crystallized specimens from the region although the mineral has been observed as massive |
|
