 | | 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...2.2.3.7 Pistelwitz pegmatites 2.2.4 Sandamap - Erongo pegmatite belt 2.2.4.1 Gossow pegmatites 2.2.4...4.8 Davib South 2.2.4.9 Brabant (van der Made, Erongo Schlucht) pegmatite 2.2.4.10 Okawayo pegmatites |  | | 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...Introduction Since the German colonial period Namibia has been well known for the occurrence of semiprecious...throughout Namibia. 1. AMAZONITE The most important occurrences of amazonite in Namibia are those in |  | | 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 ....Mineralogists,Geologistsand Collectors 21 27 29 37 Minerallocalities The North TsumebSpecial The Otavi...Northwest Region including Damaraland The Central Namib Desertand Escarpment The Spitzkoppen The Erongo Mountains...s Onganja Mine and Surrounding Copper Deposits The South The Pegmatitesin Central Namibia Luderitz and |  | | Journal (article/letter/editorial) | | gemmy, intense purple apatites from this pegmatite mine have made Pulsifer the premier locality for fluorapatite...pericline variety of albite, calcite, epidote, muscovite, quartz, titanite, chabazite, and stilbite. Another...Scovil photo. Figure 5 (right). Fluorapatite and muscovite, 15 cm tall, Brumado, Bahia, Brazil. Fine Minerals...photo. Figure 6 (bottom right). Fluorapatite on muscovite, 7 cm tall, Nagar, Hunza Valley, GilgitBaltistan...Lake Boga, Swan Hill Rural City, Victoria Aberfoyle mine, Rossarden district, Tasmania Complex metamorphosed |  | | Journal (article/letter/editorial) | | The basin evolution of the Panafrican belts in Namibia was controlled by major rift systems comprising...Damara, Kaoko and Gariep Belts cover almost half of Namibia and display a continuous 450 million years of earth...setting The study area, situated to the southwest of Karibib (Figure 2), covers portions of the Swakop and Khomas...lens, 200 m thick and 3500 m long, in the western Otjua Dome. The beds, 1 to 3 m thick, contain deformed...arkosic sandstone layers are also present in the Otjua Dome, while small lenses of biotite schist occur |  | | Catalog/List | | first offered for sale. 73007 TOURMALINE Minh Tien Mine, Luc Yen, Yenbai Province, Vietnam A classic Vietnamese...online, visit HA.com/6150 73008 ELBAITE Minh Tien Mine, Luc Yen, Yenbai Province, Vietnam This unusual...back. The only accessory minerals are two bladed Muscovite crystals included in the terminations. It is in...2015 | 12:00 PM CT 15 73009 ELBAITE Minh Tien Mine, Luc Yen, Yenbai Province, Vietnam Clearly defined...coloration, this is a classic Vietnamese Tourmaline. The region of Luc Yen has been yielding Tourmalines since |  | | Journal (article/letter/editorial) | | Pan-AfricanTungstenSkarnMineralization at the Otjua Prospect,Central Namibia N. M. STEVEN* Departmentof Geological...RhodesUniversity,Grahamstown 6140,SouthAfrica Abstract The Otjua tungstenprospect,the largestscheelite-fluorite ...metric tons at 0.53 wt % WOo and 8 wt % CaF2) in Namibia, is developedwithin Late ProterozoicOkawayoFormationcalcite...-rockdateof 478 _ 4 Ma). The contactbetweenthe Otjua leucogranite(71.7-73.4 wt % SiO2;5.78 wt % K20;Rb/Sr=...abnormallyheavy oxygen isotopecomposition of the Otjua pluton. Skarnformationwasundoubtedlyrelatedto the |  | | Journal (issue) | | the Merelani mine, located on the slopes of the Lelatema Mountains in the Manyara Region, about 70 km...cover: Top left: Euclase, 2.2 cm, from the La Marina mine, Colombia. Top right: Topaz, 8.4 cm, from Ouro Preto...left: Phosphophyllite, 2 cm, from the Unificada mine, Potosi, Bolivia. Bottom right: Grossular, 3.5 cm...of the town of Brandberg, Daures Constituency, Erongo Region, Namibia. The occurrence was discovered in...Fluorapatite on elbaite, 5.5 cm, from the Alto da Cabeca mine, Parelhas, Rio Grande do Norte, Brazil. Will Johnson |  | | Journal (article/letter/editorial) | | study from the Pan-African Damara granitoids of Namibia Received: 24 April 1995/Accepted: 11 December...are used to identify granitoids generated by muscovite and biotite dehydration melting, and to distinguish...granitoids from the Pan-African Damara mobile belt (Namibia), many of the leucogranites and Salem-type granitoids...element compositions which are consistent with muscovite dehydration melting, and their positive Eu anomalies...geological map of the Pan-African Damara belt of Namibia showing the distribution of the major granitoid |  | | 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) | | Damaraorogen, Namibia.Tourmalinites in biotite_+muscovite schists areusually conformable withthemostprominent...poorexposure andthe complicated tectonichistoryof the region,the ageof the mica-defined fabriccan rarelybe determined...moreof tourmaline; BatesandJackson, 1987)andzonesof Namibia (Stevenet al., 1994) hasled to the identificationof...morphology of TOURMALINITE MINERALIZATION, KUISEBFM.,NAMIBIA 120 _ • 140 160 1099 180 200 q. -t. ANGOLA...Fig.4) TOURMALINITEMINERALIZATION, KUISEBFM., NAMIBIA 15øE I km 16OE 50 I NORTHERN + 1101 ZONE |  | | Journal (article/letter/editorial) | | ASPECTS OF THE GENESIS AND SEQUENCE OF THE KARIBIB SOUTH WEST CRYSTALLIZATION PEGMATITES, AFRICA...Conclusions concerningthe crystallizationsequence of the Karibib pegmatites ......................................on of pegrnatites ... 1079 Implicationsof the Karibib investigation............................. Towardsa...lithium- and beryllium-bearingpegmatites of the Karibib area have been studied in detail with regard to...economically mineralizedpegmatitesin the vicinity of Karibib, South West Africa. Thesebodiesconstitute one of |  | | Journal (article/letter/editorial) | | at Kara is by open cut and operated by Tasmania Mine NL Limited. Mining has concentrated on the Kara...Moina Sandstone unit is extensively exposed in the mine area and is massive to weakly bedded, coarse to...and accessory minerals consisting of biotite, muscovite, epidote, hornblende, and magnetite. Epidote,...granite intrusion and contains skarns (Fig. 3). Mine geologists consider the syncline to plunge gently...minor faults have been mapped and interpreted by mine geologists. Most of the faults tend to displace |  | | Journal (article/letter/editorial) | | jadeite + chlorotoid + lawsonite + glaucophane and muscovite + biotite + chlorite + quartz + albite have been...paragenesis of andalusite + cordierite + biotite + muscovite + K-feldspar + plagioclase at the contact between...Hodgson, 1982; Kara from Zaw and Singoyi, 2000; Otjua from Steven and Moore, 1994); (b) distribution diagram...in the early prograde skarns such as Mac Tung, Otjua, Los Santos and Pine Creek (Fig. 7a). These clinopyroxene... similar evolution to those from the Mac Tung, Otjua, Pine Creek and Los Santos skarns. The grossular |  | Alaminia, Zohreh, Mehrabi, Behzad, Razavi, Seyed Mohammad Hossein, Tecce, Francesca (2020) Mineral chemistry, petrogenesis and evolution of the Ghorveh-Seranjic skarn, Northern Sanandaj Sirjan Zone, Iran. Mineralogy and Petrology, 114 (1) 15-38 doi:10.1007/s00710-019-00688-6 | Journal (article/letter/editorial) | | assemblages of andalusite+cordierite+biotite+muscovite+K-feldspar+plagioclase occurred at low pressure...Pine Creek, California from Newberry 1982; Otjua, Namibia from Steven and Moore 1994; Kara, Tasmania...Pine Creek, California from Newberry 1982; Otjua, Namibia from Steven and Moore 1994; Kara, Tasmania...quartz-garnet zone shows a similar evolution to those of Otjua and Cantung skarns (Fig. 6a). The subcalcic garnets...Lesser Caucasus (Azerbaijan) and the peri-Arabian region: collision-induced mantle dynamics and its magmatic |  | | Journal (issue) | | News International • Australia’s Ellendale diamond mine opens • Aquamarine and spessartine from Tanzania...Congo • Jeremejevite from the Erongo Mountains, Namibia • New morganite mine in Madagascar • Namibian gem...encountered in Namibia • Plastic and steel pearl imitations • Gem cutting factories in Namibia • Conference...diamonds shown here are from Canada’s Ekati Diamond Mine™, which started production in 1998. The necklace...the opening of Canada’s first diamond mine, the Ekati Diamond Mine™, in 1998, but a number of other projects |  | | Journal (issue) | | the Elbaite candelabra from the Tourmaline Queen Mine in California. Source: Smithsonian Institution;...around Pala, CA, and specifically at the Stewart Mine, rubellite forms crystals in a sparkling matrix...been lucky enough to go underground at the Stewart Mine and have been able to collect on the dumps a couple...Exposition, where they built a mockup of the Pala Chief Mine for Exposition visitors to walk through. Exhibition...featured a replica of part of the Tourmaline King Mine— with sales of crystals and jewelry, of course. |  | | Journal (issue) | | Cairncross & C. R. Anhaeusser Minerals of the Linwood mine, Scott County, Iowa ............. 231 by P. L. Garvin...in the still open underground workings of the Gem mine. He encountered an open pocket containing well formed...conglomerate. The stories of these early discoveries and mine developments, some of which were conducted under...,,.•• MINE r •• •• ' ··, . TRANSVAAL e e e \ . ...Province. The Eersteling mine was the first deposit to be seriously exploited in the region. of native gold |  | | Book | | NATIONAL MUSEUM IN SOFIA 66 OTHER COLLECTIONS OF MINE IN BULGARIA 71 COLLECTIONS IN OTHER CITIES AROUND... was born on 3 August, 1921, in Zlokuchen (the region of Shumen), situated in the beautiful valley of...militiaman walking on the platform (a former classmate of mine from the secondary school who was expelled for bad...drawn. I learned from some students, friends of mine, that in the city of Graz, situated in the British...was very glad when I started working in a silver mine, not far from Lima. It was for the first time in |  | | Book | | was a site on what was known in 1887 as the Yale Farm, about two miles northeast of the town of Litchfield...localities for good ilmenite crystals exist in the region (Brunet, I 977b ). NEW YORK Amity, Orange County...Springfield show ( 1995: 582). Madawaska [Faraday] mine near Bow Lake, Hastings County. Some of the world's...property of, the old Madawaska uranium mine (called the Faraday mine before 1964). The mineral assemblage...Cowgill, 1977). LATINAMERICA BRAZIL Jacupiranga mine, Sao Paulo. Among the crystallized minerals in the | | | Journal (issue) | | Cairncross & C. R. Anhaeusser Minerals of the Linwood mine, Scott County,Iowa ..................... 231 by...in the still open underground workings of the Gem mine. He encountered an open pocket containing well formed...conglomerate. The stories of these early discoveries and mine de velopments, some of which were conducted under...examples 209 MESSINA \ / *• \ / EERSTELING MINE y • PETERSBURG \ k PHALABORWA ii / ■ • r...Province. The Eersteling mine was the first deposit to be seriously exploited in the region. of native gold. |  | | Book | | other issues of the same volume will be referenced: 8:37-42 PAGINATION The following table of pagination...On a spectacular find of crocoite in the Adelaide mine, Dundas, Tasmania (by A. H. Chapman) 3:111-113 ADOLFSSON...AJO Famous mineral localities: the New Cornelia mine, Ajo, Arizona (by W. J. Thomas & R. B. Gibbs) 14:283-298...ALLEN, GEORGE B. --and W. Hunt: The Tonopah-Belmont mine, Maricopa County, Arizona 19:139-144 ALLGOOD, GENNE...Allgood, C. Williams: Ramsdellite from the Mistake mine [Arizona] 14:333-335 ALLGOOD, ROBERT W. -with G |  | | Journal (issue) | | Tourmaline Queen mine, San Diego County, California. BACK COVER: Copper, 13.5 cm, from the Ray Mine, Pinal County...Malachite 41, 119, 182 Manganite 105 Phosphophyllite 37 Proustite 107 Pyrargyrite 49, 117 Pyromorphite 65...a superb crystal of kunzite from The White Queen mine in California lends important provenance to the...the White Queen mine, California (plate 8) The Cerussite from the Kombat mine, Namibia (plate 19) The...Tourmaline Queen mine, California (plate 31) "The Dragon" Gold from the Colorado Quartz mine, California (plate |  | | Journal (issue) | | on p. 79 Articles Native gold from the Jamestown mine, Tuolumne County, California......................collectors interested in visiting the Blanchard mine or other mines in the Hansonburg mining district...signed in at Bingham for entry to the Blanchard mine area for surface collecting. Underground collecting...strictly prohibited due to the hazardous nature of the mine workings, and visitors are required to acknowledge...agreement to collect in the area. The Blanchard mine will be closed to the general public until further |  | | Journal (issue) | | Peter Richards & D. G. Howard The Pezinok antimony mine, Male Karpaty Mountains, Slovakia................. large format. by Ed Clopton and Wendell Wilson $37 Circulation Manager Mineralogical Record P.O. Box...impossible in a real twinned crystal, because any small region of the twin must have a structure which corresponds...Senkvicka 5, 902 01 Pezinok, Slovakia T h e P ezin o k mine, an antim ony deposit m ined since 1 9 4 0 , has...the locality. INTRODUCTION The Pezinok antimony mine in southwestern Slovakia is a relatively small ore |
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