Reconnaissance Geology of the Northern Plomosa Mountains

The northern Plomosa Mountains were actively explored and mined for base and precious metals following the construction of the Arizona and California railroad that passed through Bouse in the very early 1900's. The Little Butte, Malakitt, Hearts Desire, and Old Maid mines at the extreme northern end of the range were producing mines when the U. S. Geological Survey published Willis Lee's "geologic sketch map" (Lee, 1908) of northwestern Arizona. His map only topographically differentiated the Plomosa (his Palomas) mountains from the surrounding desert plains, using only information supplied by railroad engineers.Documents in the AZGS Document Repository collection are made available by the Arizona Geological Survey (AZGS) and the University Libraries at the University of Arizona. For more information about items in this collection, please contact azgs-info@email.arizona.edu