| Reference | {Deposit:: PATTERSON, S.H., AND MURRAY, H.H., 1975, CLAYS, IN LEFOND, S.J., ED., INDUSTRIAL MINERALS AND ROCKS (NONMETALLICS OTHER THAN FUELS): NEW YORK, AMERICAN INSTITUTE OF MINING, METALLURGICAL, AND PETROLEUM ENGINEERS, INC., P. 560}{Production:: PATTERSON AND MURRAY, 1975.} |