San Francisco: California Division of Mines and Geology , 1966. Softcover. Item #46465
This report is concerned mostly with high-purity quartzite containing 95 to 100 percent pure SiO2. 58 pages with photomicrographs, maps, photographs, list of quartzite deposits in California, and index, plus four folded map plates in the rear pocket. Bound in brown stiff card covers printed in black. Three long thin rubbed trails on the front cover. A near fine copy.