1. The effect of trapped liquid crystallization on cumulus mineral compositions in layered intrusions;Barnes;Contrib. Mineral Petrol.,1986
2. Reconnaissance isotopic investigation in the Namaqua Mobile belt and implications for Proterozoic Crustal evolution—Namaqua geotraverse;Barton,1983
3. Progress report on the geology of the O'okiep Copper District;Benedict,1964
4. The petrogenesis of the glimmerite occurrences in the Koperberg Suite, Namaqualand;Boer,1989
5. Geochemical aspects of the glimmerite occurrences in the Okiep Copper District, Namaqualand;Boer;S. Afr. J. Geol.,1993