Brookins, Douglas G., and Michael J Woods. “High Pressure Mineral Reactions in a Pyroxenite Granulite Nodule from the Stockdale Kimberlite, Riley County, Kansas”. Bulletin (Kansas Geological Survey), no. 199 (January 1, 1970): 1–6. Accessed December 29, 2025. https://journals.ku.edu/kgsbulletin/article/view/22225.