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Excerpt from Petrographical and Geological Investigations of Certain Transvaal Norites, Gabbros, and Pyroxenites and Other South African Rocks: An Inaugural Dissertation to Obtain the Degree of Doctor of PhilosophyIt is proposed in this paper to treat of some norites and allied rocks, which occur in the Pretoria, Rustenburg, and Marico Districts of the Central and Western Transvaal, and, if possible, to demonstrate any connection which they ma...

Excerpt from Petrographical and Geological Investigations of Certain Transvaal Norites, Gabbros, and Pyroxenites and Other South African Rocks: An Inaugural Dissertation to Obtain the Degree of Doctor of Philosophy It is proposed in this paper to treat of some norites and allied rocks, which occur in the Pretoria, Rustenburg, and Marico Districts of the Central and Western Transvaal, and, if possible, to demonstrate any connection which they ...