MCCALLISTER, R.H.; MEYER, H.O.A.; BROOKINS, D.G. "Pyroxene" - ilmenite xenoliths from the Stockdale Pipe, Kansas: chemistry, chrystallography, and origin. International Kimberlite Conference: Extended Abstracts, [S. l.], v. 1, p. 213–216, 1973. DOI: 10.29173/ikc888. Disponível em: https://journals.library.ualberta.ca/ikcabstracts.com/index.php/ikc/article/view/888. Acesso em: 19 dec. 2025.