Reference | {Deposit:: GAULT, H. R., MINERAL RESOURCES (IN) GEOLOGY AND MINERAL RES}{Deposit:: OF BUCKS CO. PA., PG. 214, BULL. C9, PA. GEOLOGICAL SURVEY 1959}{Deposit:: BAYLEY, W. S., PRECAMBRIAN GEOLOGY AND MINERAL RESOURCES OF}{Deposit:: AWARE WATER GAP AND EASTON QUADRANGLES, N. J. AND PA., USGS}{Deposit:: 20, PG. 87, 1941} |