Erlank, A.J. “Kimberlite Potassic Richterite and the Distribution of Potassium in the Upper Mantle”. International Kimberlite Conference: Extended Abstracts 1 (August 13, 1973): 103–106. Accessed November 23, 2024. https://ikcabstracts.com/index.php/ikc/article/view/859.