| Reference | {Deposit:: PEARRE & CALKINS, 1957, MIRM RM}{Deposit:: Pearre, N.C. And Calkins, J.A., 1957, Mineral Deposits And Occurrences In Vermont, Exclusive Of Clay, Sand And Gravel, And Peat: U.S. Geological Survey Mineral Investigations Resource Map Mr-5, Scale 1:500,000.Pearre, N.C. And Calkins, J.A., 1957, Mineral Deposits And Occurrences In Vermont, Exclusive Of Clay, Sand And Gravel, And Peat: U.S. Geological Survey Mineral Investigations Resource Map Mr-5, Scale 1:500,000.} |