Jagoutz, E, V. Lorenz, and H. WŠnke. “Al-Augit and Cr-Diopside Ultramafic Nodules in European Alkali Basalts”. International Kimberlite Conference: Extended Abstracts 2, no. 1 (September 12, 1977): 168–170. Accessed February 6, 2025. https://journals.library.ualberta.ca/ikcabstracts.com/index.php/ikc/article/view/978.