Reference | {Deposit:: SINGEWALD, JR, J T, 1928, MD.G.S. VOL 12, PART 2, PP 106-107}{Deposit:: # FOR LOC. SEE MAP ATTACHED TO MCVEY QUARRY, CECIL CO.-LIST.}{Deposit:: PEARRE, N C & HEYL, A V, 1960, USGS BULL 1082-K, P. 799.}{Deposit:: DEPOSITS IN SERPENTINE ROCKS OF THE PIEDMONT UPLAND,MD.PA,AN}{Deposit:: U.S.GEOL.SURVEY BULL.1082-K,PG.799AND PLATE 41.} |