| Reference | {Deposit:: U.S. BUREAU OF MINES, 1995, SPATIAL DATA EXTRACTED FROM THE MINERALS AVAILABILITY SYSTEM/MINERAL INDUSTRY LOCATION SYSTEM (MAS/MILS): U.S. BUREAU OF MINES SPECIAL PUBLICATION 12-95.}{Deposit:: SAMPSON, I.E., AND MASTERS, J.M., 1990, DIRECTORY OF ILLINOIS MINERAL PRODUCERS, 1988-1989, ILLINOIS STATE GEOLOGICAL SURVEY ILLINOIS MINERAL NOTES 103, P. 44.} |