Tainton, K.M., and P. Browning. “The Group-2-Kimberlite - Lamproite Connection: Some Constraints from the Barkly-West District, Northern Cape Province, South Africa”. International Kimberlite Conference: Extended Abstracts 5 (February 1, 1991): 405–407. Accessed April 20, 2024. https://ikcabstracts.com/index.php/ikc/article/view/2585.