Helmstaedt, H. “Possible Pre-Kimberlite Serpentinization in Ultrabasic Xenoliths from Bultfontein and Jagersfontein Mines, South Africa”. International Kimberlite Conference: Extended Abstracts 3 (September 1, 1982): 210–210. Accessed February 6, 2025. https://journals.library.ualberta.ca/ikcabstracts.com/index.php/ikc/article/view/2269.