 | | Journal (article/letter/editorial) | | intrusives with and without associated carbonatite, Namibia B. Bühn a,b,*, R.B. Trumbull c a Institut fur...from the Cretaceous Damaraland igneous province (Namibia), one with and one without associated carbonatite...evolution. The Etaneno complex occurs in close spatial proximity to the Kalkfeld bimodal carbonatite –...– alkali silicate complex, and is dominated by nepheline (ne)-monzosyenites and ne-bearing alkali feldspar...cumulate component (nepheline, plagioclase). The Kalkfeld nefoidites (ijolites) and ne-syenites have 87Sr/86Sr(i) |  | | Journal (article/letter/editorial) | | resources of anorogenic alkaline complexes in Namibia: A review F. Pirajno a a Geological Survey of...resources of anorogenic alkaline complexes in Namibia: A review, Australian Journal of Earth Sciences:...resources of anorogenic alkaline complexes in Namibia: A review F. PIRAJNO Downloaded by [Dalhousie...Plain Street, East Perth, WA 6004, Australia. In Namibia there are numerous anorogenic alkaline complexes...carbonatites, mineralization, Namibia. INTRODUCTION In southwestern Africa (Namibia, southern Angola and northwestern |  | | 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unpublished.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 |  | | Book (edition) | | detailed geological survey of the Alné Island complex and announced his results in a series of papers...completed most of the field work on the Iron Hill complex of Gunnison County, Colorado, in 1912-1913. Although...fairly pure calcite (Garson and Smith, 1958). The complex was first studied by F. Dixey, and it was he who...detailed and complete studies of a carbonatitic complex. Between 1950 and 1956 there took place the most...presented by Leonardos (1956A, B). The Fen, Norway, complex has been restudied by Saether (1958); that of the |  | | Journal (article/letter/editorial) | | Africa (Shirey et al., 2001) and the Lewisian complex in Scotland (Zirkler et al., 2012). Nevertheless...setting PT E D modelling. AC In the Tasiilaq region of South-East Greenland, the Nagssugtoqidian Orogen...the latter including the Ammassalik Intrusive Complex (Fig. 1; Kolb, 2014). PT The Schweizerland Terrane...2008). The calc-alkaline Ammassalik Intrusive Complex (AIC) to the south of the Kuummiut NU Terrane...al., 2008), the retrogressed eclogite contains complex mineral reaction textures SC and assemblages |  | | Book | | magmatism of the eastern margin of the Atlantic (Namibia, Angola) or the western African kimberlites do...Mafic-Ultramafic Magmatism in the Southwest Uganda Region of the African Rift: Implications from Experimental.... . . ... 3 The Crust Under the Canary Islands Region ............. 4 Network of Fractures and Identity...Identity of Vertical Movements in the Canary Islands Region ........................... 4.1 Transoceanic and......................... 5.1 The Thghouaji Ring-Complex ...................... 5.2 Conclusion ........ |  | | Book | | simplest way to visualize the chemical composition of complex silicate materials is as a mixture of oxides: silicon...NaAlSi3O8). Solid solution in pyroxenes is more complex, so representing the composition of a pyroxene...be ignored. Garnet compositions are still more complex and require six end-members (Box 5.2). Such ‘formula... see Fig. 1.5); the dashed lines delineate the region of overlap between alkali and subalkali basalts... The circumstances behind this transition are complex. The field evidence may be summarized as follows: |  | | Report (issue) | | third order administrative area, basin/formation/region(area)/deposit, and deposit/site name. Guano and...third order administrative area, basin/formation/region(area)/ deposit, deposit/site name, deposit type...information in the next two fields, .Basin/Fmt/Region (area)/Deposit and Deposit/Site_Name, is meant...Age, Host/Associated Lithology, Host Formation/Complex, Minerals, and Geologic Comments/Deposit Description...Yacimientos no metaliferos y rocas de aplicacion de la region Patagonia-Comahue: Argentina Ministerio de Economia |
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