McCallister, R.H., H.O.A. Meyer, and D.G. Brookins. “‘Pyroxene’ - Ilmenite Xenoliths from the Stockdale Pipe, Kansas: Chemistry, Chrystallography, and Origin”. International Kimberlite Conference: Extended Abstracts 1 (August 13, 1973): 213–216. Accessed October 31, 2024. https://journals.library.ualberta.ca/ikcabstracts.com/index.php/ikc/article/view/888.