“…Protracted alkaline magmatic rocks within the Wet Mountains are bounded on the east by the Ilse fault and on the west by the Texas Creek and Westcliffe faults (Figure 1; Armbrustmacher, 1988;Pivarunas & Meert, 2019). The Ediacaran-Cambrian McClure Mountain, Gem Park, and Democrat Creek alkaline complexes represent stocks and composite intrusions composed mostly of mafic-ultramafic cumulate rocks, nepheline syenite, syenite, and quartz syenite (Figure 2; Armbrustmacher, 1988;Christman et al, 1959;Olson et al, 1977;Shawe & Parker, 1967). The Gem Park complex is a stratified mafic-ultramafic instrusion composed of pyroxenite and gabbro (Armbrustmacher, 1984;Parker & Sharp, 1970).…”