Mccallum, M.E., H. G. Coopersmith, and C.W. Hodge. “Mineralogical and Textural-Genetic Classification of Kimberlites in Northern Colorado and Southern Wyoming, U.S.A”. International Kimberlite Conference: Extended Abstracts 3 (September 1, 1982): 209–209. Accessed November 21, 2024. https://ikcabstracts.com/index.php/ikc/article/view/2265.