| Reference | {Deposit:: WERNER, H.J., 1966, GEOLOGY OF THE VESIVIUS QUADRANGLE, VIRGINIA, VDMR, R.I. 7, 53P.}{Deposit:: WATSON, T.L., 1907, MINERAL RESOURCES OF VIRGINIA, J.F. BELL COMPANY, LYNCHBURG, 618P.}{Deposit:: BARWOOD, H.L. AND ZELAZNY, L.W., 1982, PHOSPHATE MINERALS IN THE VESIVIUS, VIRGINIA AREA, IN ROCKS AND MINERALS, VOL.57, NO.1, P.20-22.} |