STEWART, L. A.; 1955 ; CHRYSOTILE ASBESTOS DEPOSITS OF ARIZONA: USBM INFORMATION CIRCULAR 7706 , P. 45 .HARPER, C. M.; 1964 ; RECONNAISSANE OF IRON RESOURCES IN ARIZONA: USBM INFORMATION CIRCULAR 8236 , P. 56 .WILSON, E. D.; 1928 ; ASBESTOS DEPOSITS OF ARIZONA: ABM BULLETIN 126 , P. 63 .