 | Amthauer, Georg, Katz-Lehnert, Kerstin, Lattard, Dominique, Okrusch, Martin, Woermann, Eduard (1989) Crystal chemistry of natural Μn3+-bearing calderite-andradite garnets from Otjosondu, SWA/Namibia. Zeitschrift für Kristallographie - Crystalline Materials, 189 (14) 43 doi:10.1524/zkri.1989.189.14.43 | Journal (article/letter/editorial) | | Mn3 + -bearing calderite-andradite garnets from Otjosondu, SW A/N amibia 1, Kerstin Katz-Lehnert 4 and Eduard...Abstract. Five calderite-andradite garnets from Otjosondu, Namibia, were studied chemically and by optical absorption...this work) of calderite-rich garnets from Otjosondu (SWA/Namibia) consistently yielded a sum of Al + Fe~o{...In this work the calderite-rich garnets from Otjosondu have been analyzed and investigated by optical...garnets The metamorphic manganese deposit of Otjosondu is situated about 165 km NE of Windhoek (at 21°15'S |  | Amthauer, Georg, Katz-Lehnert, Kerstin, Lattard, Dominique, Okrusch, Martin, Woermann, Eduard (1989) Crystal chemistry of natural Mn3+-bearing calderite-andradite garnets from Otjosondu, SWA/Namibia. Zeitschrift für Kristallographie - Crystalline Materials, 189 (1) 43-56 doi:10.1524/zkri.1989.189.1-2.43 | Journal (article/letter/editorial) | | Mn3 + -bearing calderite-andradite garnets from Otjosondu, SW A/N amibia 1, Kerstin Katz-Lehnert 4 and Eduard...Abstract. Five calderite-andradite garnets from Otjosondu, Namibia, were studied chemically and by optical absorption...this work) of calderite-rich garnets from Otjosondu (SWA/Namibia) consistently yielded a sum of Al + Fe~o{...In this work the calderite-rich garnets from Otjosondu have been analyzed and investigated by optical...garnets The metamorphic manganese deposit of Otjosondu is situated about 165 km NE of Windhoek (at 21°15'S |  | | Journal (issue) | | ........................pg. 3 Actinolite from Namibia by Justin Zzyzx .................................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...Mountains, located in the southwestern part of central Namibia. The Gamsberg Mountain is the most important landmark...Fluorapatite Fluorapatite is quite rare from the region but can be found as complex, colorless crystals |  | | Journal (article/letter/editorial) | | and the occurrence of tourmalinites and Sr-rich baryte veins elsewhere in the Cuyuna North range. KEVWOROS:...hyalophane, aegirine, rhodonite, rhodochrosite, and vein baryte, as well as stratigraphic intervals that contain...manganese deposits or manganiferous iron ores of Otjosondu, Namibia (Viswanathan and Kielhoru, 1983), Benallt...with base metal mineralization or strata-bound baryte deposits such as those at Broken Hill, New South...found to contain as much as 35 vol. % tourmaline. Baryte veins, up to 10 cm wide, have also been found at |  | | Journal (article/letter/editorial) | | for Mg, wollastonite for Ca, jadeite for Na, and baryte for Ba. No Sr was detected in barian feldspars...Harlow (1995) suggested that the destabilization of baryte was caused by a decrease in fO2 and by a sulphate...reduction in the serpentinite meÂlange, because baryte-bearing metasedimentary rocks were found in serpentinite-matrix...(1953) A new occurrence of bariumfeldspar at Otjosondu, South-West Africa, and an X-ray method for determining...Ba-rich and Bapoor phases in barium feldspar from Otjosondu, South-West Africa. Mineralogical Magazine, 42 |  | | Journal (article/letter/editorial) | | tlapallite, 183 South-West Africa (Namibia) Onganja mine, cuprite, 5o5 Otjosondu, celsian, barian orthoclase...tu~ekite, 278 and M2I North Pole deposit, Pilbara, baryte with H2S-bearing inclusions, 4o8 Scotia, Kalgoorlie |  | | Report (issue) | | Geological Survey of Namibia) MINISTRY OF MINES AND ENERGY GEOLOGICAL SURVEY OF NAMIBIA Director: B.G. Ho...Ho al BULLETIN 1 Type mineralogy of Namibia by Vaughan C. Daltry Editor: Clare Kennedy Galloway Obtainable...the Geological Survey P.O. Box 2168, Windhoek, Namibia Price Local (+GST) Abroad (Post Free) R20.00 R25... ______ ........ Abstract The type mineralogy of Namibia is reviewed. One hundred and thirty-nine (139)...Twenty-three (23) unnamed phases are also listed. Namibia ranks second to Zaire as the most productive African |  | Chang, Chao, Hu, Wen-Xuan, Fu, Qi, Cao, Jian, Wang, Xiao-Lin, Wan, Ye, Yao, Su-Ping (2018) Characteristics and formation processes of (Ba, K, NH4)-feldspar and cymrite from a lower Cambrian black shale sequence in Anhui Province, South China. Mineralogical Magazine, 82 (1) 1-21 doi:10.1180/minmag.2017.081.017 | Journal (article/letter/editorial) | | Beddoe–Stephens, 1982; Chabu and Boulègue, 1992), baryte deposits (Moro et al., 2001; Xia et al., 2005;...Ba-rich K-feldspars have been reported from the baryte deposits of Guizhou Province and the vanadium deposits...1994; Xia et al., 2005; Han et al., 2013). In the baryte deposits, Ba-rich K-feldspars occur either as cores...as euhedral crystals in contact with quartz or baryte (Xia et al., 2005; Han et al., 2013). In the vanadium...(Long et al., 1994). The Ba-rich K-feldspars in the baryte and vanadium deposits were identified as hyalophane |  | | 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 |  | | Journal (article/letter/editorial) | | (vol. 30, p. 100). 2. Manganese-iron garnet from Otjosondu, South-West Africa: by Mr. F. H. S. Vermaas (vol...kaliophilite: by Dr. A. M. B: Douglas. 2. Morphology of baryte : by Mr. A. F. Seager. 3. Gyrolite: by Dr. A. L |  | | Journal (article/letter/editorial) | | kV, and natural sanidine, albite, celestine and baryte were used as standards. These measurements were...extent of solid solution - - a relatively wide region of solid solution near celsian and a narrow range...dimensions of (Ba, K, Na)-feldspars from Otjosondu, Namibia and their significance. Amer. Mineral., 68 |  | | Book | | B=y= soo sulphur cerussite olivine enstatite baryte chalcopyrite scapolite apophyllite C a = b...deposits in Texas and Louisiana (USA), Tarnobrzeg region and Mach6w (Poland), Karakum Desert and Volgaland...(217), marcasite (437) • Occurrence: common; Clay region in Alabama (USA); Harz (GDR), FRG, Botogol deposit...Butte - Montana - fine crystals (USA), Tsumeb (Namibia), Bor (Yugoslavia), Baita (Romania), in Mansfeld...volcano Avachinskaya in Kamchatka (USSR), Wiesbaden region (FRG) • Application: chemical, glass and food industries | | | Book | | enstatite chalcopyrite scapolite orthoclase baryte a=b#c tetragonal (7) a = B = 4 => 90° rutile...deposits in Texas and Louisiana (USA), Tarnobrzeg region and Machow (Poland), Karakum Desert and Volgaland...(217), marcasite (437) e Occurrence: common; Clay region in Alabama (USA); Harz (GDR), FRG, Botogol deposit...Butte — Montana — fine crystals (USA), Tsumeb (Namibia), Bor (Yugoslavia), Baita (Romania), in Mansfeld...volcano Avachinskaya in Kamchatka (USSR), Wiesbaden region (FRG) e Application: chemical, glass and food industries |  | | 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 |  | Cabral, A. R., Tupinambá, M., Lehmann, B. (2013) Spessartine in compact-hematite rock, southern Serra do Espinhaço, Minas Gerais, Brazil, and genesis of compact hematite. Mineralogical Magazine, 77 (8) 3197-3215 doi:10.1180/minmag.2013.077.8.12 | Journal (article/letter/editorial) | | corroborated by the positive Eu anomalies found in baryte from hydrothermal veins (e.g. Guichard et al.,...garnet from a barite-rich rock, Otjosondu ferromanganese deposit, Namibia: the fingerprint of oxic sea water...J. and Guimarães, D. (1931) The diamondbearing region of northern Minas Geraes, Brazil. Economic Geology |  | | Journal (volume) | | deposits at Långban in Sweden, the Kombat Mine in Namibia, and the Mammoth St. Anthony Mine in Tiger, Arizona...manganese-hosted Pb deposits found throughout the region. This has proved to be an unexpectedly complex...particular theme is one that repeats throughout the region. Complicating the matter still further is the fragmentary...to those found elsewhere throughout the Mendip region. These deposits are of the Mississippi Valley type...marked disconformity visible throughout much of the region, the disconformity representing a gap in the strata |  | | 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...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...alpinotypen Klüfte aus der Gamsberg-Region 180 Die grünen „Amethyste" aus der Region des Gamsberges 195 Spektakuläre |  | | Book | | of the granite-gneissic Precambrian rocks of the region and of manganese mobilized by leaching of basalts...controlled by the structurally superimposed unwrapping region. This engendered the decisive conditions in the...granitized material itself. The wide country rock-region may in many cases be a significant contributor...the new mineral (metasome) or may diffuse into a region of increasing mobility, culminating in a solution...mineral parageneses of the Abu Dabbab area (Red Sea region, Egypt) showed that a lithophilic (crust) mineral |  | | Journal (article/letter/editorial) | | radiating marcasite masses, carbonate, quartz, baryte, zeolites or silver sulphosalts. A narrow (2-30... Kodura, Garbham, India; Bennald, Wales; Otjosondu, Namibia; Wilkes Land, Antarctica; Guyana Shield;...2014 398 I. R. PLIMER Laurium, Greece; Tsumeb, Namibia; Franklin, USA) are not present at Broken Hill |  | | Book | | The spellings of names follow CIM; thus pyrite, baryte and sylvine replace the older pyrites, barytes...black. H 2.5; SG 8.2-8.3 Localities. Occurs with baryte and calcite with manganese in a limestone at Piute...crystals are found in Germany and the St. Gotthard region of Switzer¬ land. Pyritohedra are found in the...silver and lead sulphosalts, and with quartz and baryte. Localities. Pribram, Czechoslovakia; Atacama,...associated with bornite, pyrite, sphalerite, quartz and baryte, among other minerals. Localities. An important |  | | Book | | only other relatively common sulphate mineral is baryte, BaS04, which typically occurs in veins deposited...of 21 THE CHEMISTRY OF MINERALS calcite and baryte. Other common halides, halite (NaCl), sylvine (KC1)...tabular : flat (as in some varieties of corundum, baryte or wulfenite); dendritic: treelike (as in some...length. Natrolite forms long thin fibre-like prisms. Baryte, on the other hand, has a tabular (flattened) or...called gangue minerals, and include quartz, calcite, baryte, siderite, dolomite, rhodochrosite and fluorite | | | Book | | only other relatively common sulphate mineral is baryte, BaSO,, which typically occurs in veins deposited...limestone in some places Right: A fine group of baryte crystals, | a fairly common Sulphate. specimen...characteristic associate of 21 calcite and baryte. Other common halides, halite (NaCl), sylvine...tabular : flat (as in some varieties of corundum, baryte or wulfenite); dendritic : treelike (as in some...length. Natrolite forms long thin fibre-like prisms. Baryte, on the other hand, has a tabular (flattened) or |  | | Book | | systematically present the geology of each country, region and continent on Earth. Each book aims to provide...(Gariep Belt) cropping out in the western borders of Namibia and South Africa. They were split up in the Mesozoic...concerning the tectonic and geodynamic evolution of this region during the Precambrian. Major tectonometamorphic...tectonostratigraphic domains and structures of the region are presented, together with implications for the... They emphasize the enormous potential of this region in terms of base (Cu, Pb, Zn, Co, Ni), precious |  | | Journal (issue) | | speed of magnetometric work. In the particular region where the present writer has carried out his researches...pronot1nced and produce an eluvial cover; in such a region, however, it is maintained that geophysics, and...encouraging, as the first traverse appeared to reveal a region of low resistivity over a stretch of about 200...200 ft. Details of the traverses in the anomalous region are shown in Fig. 3, the individual anomalies being...strata. On the more southerly line, line Zero, a region of low resistivity was speedily disclosed, but |  | | Book (edition) | | Unnecessary varietal name. (TL) L1ke Superior region. Alasanitc. error for alazanite. Znp. Vses. Min...thorianite with up to 1 2 wt.% PbO. (TL) Aidan region. eastern Siberi:i. US S R . Named for locality...[PDF 29-765 1. (TL) Alekseev deposit. Sutemskii region, St:inovoi range. USSR. Named for locality. Alexandrite...alloclasite. q.1 •. The original spelling. Allomorphite. baryte pscudomorphous after anhydrite. A Breithaupt (...yellowish green chalcedony from (TL) Death Valley region. California. USA. Amberite. error for amhritc |
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