| Michael N. Spilde, Steve Dubyk, Brian Salem, and William P. Moats, (2011) Rare earth bearing-minerals of the Petaca district, Rio Arriba County, New Mexico. New Mexico Geological Society Fall Field Conference Guidebook – 62 Geology of the Tusas Mountains and Ojo Caliente pp. 389-398. |
Unnamed prospect, Petaca Mining District, Rio Arriba County, New Mexico, USA