Original Research

The Phalaborwa Syenite Intrusions along the West-Central Boundary of the Kruger National Park

C. Frick
Koedoe | Vol 29, No 1 | a519 | DOI: https://doi.org/10.4102/koedoe.v29i1.519 | © 1986 C. Frick | This work is licensed under CC Attribution 4.0
Submitted: 27 November 1986 | Published: 27 November 1986

About the author(s)

C. Frick, Geological Survey of South Africa, South Africa

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The geology of the Phalaborwa Complex is described and emphasis placed on the distribution of the large number of syenite intrusions. The petrography of the different textural types of syenites is discussed and it is shown that porphyritic, granular, gneissic and hypidiomorphic syenites are present. The petrography shows that the deformation textures, which are present in some of the syenites, may have formed during the emplacement of syenitic magmas which contained a high concentration of crystals. The geochemistry of the syenites is discussed and it is shown that they were not derived from an alkali basaltic magma through fractional crystallisation, but that they may rather represent alkali basaltic magmas which were contaminated by granitic material. The mode of emplacement of the Phalaborwa Complex is discussed and the relationship between the pyroxenites is explained.


Phalaborwa Complex, Proterozoic, syenites, pyroxenite, petrology, geochemistry.


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