Mineral economics of industrial minerals in southeastern Arizona, in Houser, B.B., ed., Industrial minerals of the Tucson area and San Pedro Valley, southeastern Arizona, Arizona Geological Society Field Trip, April 4 and 5, 1992

Phillips, K.A., 1992, Mineral economics of industrial minerals in southeastern Arizona, in Houser, B.B., ed., Industrial minerals of the Tucson area and San Pedro Valley, southeastern Arizona, Arizona Geological Society Field Trip, April 4 and 5, 1992: Arizona Geological Society Field Trip Guidebook, p. 23-36.