Sacramento, CA: California Division of Mines and Geology, 1975. First edition. Softcover. Item #40579
Important resources of clay, silica sand, and lignite are found in a 200-square-mile area in the vicinity of the town of Ione in western Amador county and adjoining parts of Sacramento and Calaveras Couties, California. 27 pages with photographs, sections, and references, plus the required folded map plate in the rear pocket. Bound in original stiff card covers printed in black. Two very light dulled spots to the front cover, else a fine and bright copy.