pegmatite bodies african

  • ASX Announcement - Australian Vanadium

    The main Blesberg pegmatite itself consists of two main, steeply dipping to sub-vertical pegmatite dykes. The dykes intrude into granodiorite country rock. The two main dykes are part of an array of ple similar but untested pegmatite bodies outcropping within .

  • Classification, mineralogical and geochemical variations ...

    The Pan African aged Damara Orogen in Namibia is host to the Cape Cross-Uis pegmatite belt, one of several NE-trending pegmatite belts which host Li, Nb, Ta and Sn mineralisation. ... Field mapping and structural analysis of thirty seven pegmatite bodies has shown that the pegmatites intrude along crustal weaknesses such as fold axes and ...

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  • Geology, Geochemistry and Geochronology of the Kenticha ...

    bite + sericite + microcline + greisens + amazonite and finally pegmatites from older to younger. The alaskitic granites and the pegmatite bodies are injected as magmatic dikes into the host-rocks. This granite is characterized by lack of bio-tite, replacement of .

  • AFRICAN HARD ROCK LITHIUM

    exposed pegmatites along with small artisanal working in and adjacent to the exposed greenstones •Well-defined deeper historic workings on pegmatites to the NE of the Chisuma group of licences •The pegmatite host rocks are interpreted to be amphibolites and possibly felsic meta-volcanic rocks of the MGB License area 149 ha No. Licenses 6

  • Pegmatite: Igneous Rock - Pictures, Definition & MoreFormation
  • Petrographic and mineralogical characterisation of ...

    pegmatites. The most distal pegmatite bodies in this area suffered from intense alkali metasomatism, i.e. widespread growth of albite and white mica. A petrographic and geochemical study has been carried out on the pegmatite bodies in order to determine the petrogenetic evolution of the pegmatite zonation.

  • Iron-rich ultramafic pegmatite replacement bodies within ...

    Iron-rich ultramafic pegmatite replacement bodies within the Upper Critical Zone, Rustenburg Layered Suite, Northam Platinum Mine, South Africa D. L. Reid Department of Geological Sciences, University of Cape Town, Private Bag Rondebosch, 7700, South Africa

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  • Iron-rich ultramafic pegmatite replacement bodies within ...

    Iron-rich ultramafic pegmatite replacement bodies within the Upper Critical Zone, Rustenburg Layered Suite, Northam Platinum Mine, South Africa D. L. Reid Department of Geological Sciences, University of Cape Town, Private Bag Rondebosch, 7700, South Africa

  • Mineralized pegmatites in Africa - Von Knorring - 1987 ...

    Abstract. Potential rare-element pegmatites are widespread on the African continent, especially south of the equator, along the Kibaran orogenic belt extending from Uganda, through Rwanda and Kivu, Maniema and Shaba provinces of Zaire.