McCandless, T.E., M.A. Waldman, and J.J. Gurney. “Macro and Microdiamonds from Arkansas Lamproites: Morphology, Inclusions and Isotope Geochemistry”. International Kimberlite Conference: Extended Abstracts 5 (February 1, 1991): 264–266. Accessed August 4, 2021. https://ikcabstracts.com/index.php/ikc/article/view/2534.