1. Report of a magnetic survey of South Africa;Beattie,1909
2. Major structural features of the area between the Langeberg Range and Kenhardt, Northern Cape Province;Botha;Trans. Geol. Soc. S. Afr.,1977
3. Serpentinized peridotite from the north wall of the Puerto Rico trench;Bowen;Geol. Soc. Am. Bull.,1966
4. The system MgO-SiO2-H2O;Bowen;Geol. Soc. Am. Bull.,1949
5. Radiometrie age measurements on rocks from Southern Africa to the end of 1971;Burger;Geol. Surv. S. Afr. Bull.,1973