Haff, J.C.2024-03-142024-03-1410.15786/13688191https://wyoscholar.uwyo.edu/handle/internal/8098https://doi.org/10.15786/13688191Nepheline-syenite claims, "Bull" Hill, Crook County, Wyominghttps://creativecommons.org/licenses/by/4.0/figure