Mccallum, M.E., H. G. Coopersmith, and C.W. Hodge. 1982. “Mineralogical and Textural-Genetic Classification of Kimberlites in Northern Colorado and Southern Wyoming, U.S.A”. International Kimberlite Conference: Extended Abstracts 3 (September):209-9. https://doi.org/10.29173/ikc2265.