 | Melcher, Frank, Graupner, Torsten, GƤbler, Hans-Eike, Sitnikova, Maria, Henjes-Kunst, Friedhelm, OberthĆ¼r, Thomas, Gerdes, Axel, Dewaele, Stijn (2015) Tantalumā(niobiumātin) mineralisation in African pegmatites and rare metal granites: Constraints from TaāNb oxide mineralogy, geochemistry and UāPb geochronology. Ore Geology Reviews, 64. 667-719 doi:10.1016/j.oregeorev.2013.09.003 | Journal (article/letter/editorial) | | Zimbabwe) 4.3.3. Orange River Pegmatite Belt (Namibia, South Africa) AC 4.3.3.1. Radiometric data 4...Radiometric data 4.4.3.2. Mineralogy 4.4.4. Damara Belt (Namibia) 4.4.4.1. Radiometric data 2 ACCEPTED MANUSCRIPT...Alto-Ligonha Province (Mozambique) 5.4.4. Damara Belt (Namibia) 5.4.5. Older Granites (Nigeria) 5.4.6. Madagascar...granitic rare-element IP pegmatites. Columbite-group minerals (CGM) account for the majority of the current...and the Tantalite Valley pegmatites (southern Namibia). Large compositional variations through Fe-Mn |  | | Journal (article/letter/editorial) | | carbonatites and peralkaline igneous rocks. Columbite-group minerals (CGM) account for the majority of the current...(mainly Rwanda and the DR Congo), around the Kenticha mine (Ethiopia) and in the Alto Ligonha Province (Mozambique)...and the Tantalite Valley pegmatites (southern Namibia) and Ā Large compositional variations through Fe-Mn...Nigeria and many pegmatites in the Damara Belt of Namibia. Trace element concentrations in CGM and other...Nigeria Rwanda Africa total World mine production % Africa/world Ta mine production 2008 2009 2010 2011 |  | Marquez-Zavalia, M. F., Galliski, M. A., Cerny, P., Chapman, R. (2012) AN ASSEMBLAGE OF BISMUTH-RICH, TELLURIUM-BEARING MINERALS IN THE EL QUEMADO GRANITIC PEGMATITE, NEVADOS DE PALERMO, SALTA, ARGENTINA. The Canadian Mineralogist, 50 (6) 1489-1498 doi:10.3749/canmin.50.6.1489 | Journal (article/letter/editorial) | | Harris 1978). In the same petrogenetic family, the Rubikon and especially the Swartberg pegmatites of southern...late generation of a U-rich member of the microlite group, which upon metamictization generated fractures...sulfosalts, especially those belonging to the stannite group, are less common, but nevertheless are encountered...of these phases in general, and of the stannite-group minerals in particular, is remarkable, despite their...and increased f(CO2). Acknowledgements The first group of the EMP analyses were performed at the University |  | | Journal (article/letter/editorial) | | belonging to the silicate-, phosphate- and oxidic group respond to chemical weathering under the varying...out is called saprolite. Examples from the Weiss Mine, Germany, show this transition. There are types...landscape shows the well-known Rubikon (Rubicon) Nb/Ta pegmatite in Namibia (Fig. 6f) (Moore, 2000). Episodically...N-S in the area. One of them is made up of the Rubikon pegmatite which extends in NW-SE direction and... because of the increasing amount of kaolinite-group phyllosilicates found in the argillitization zone |
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