Mineral assessment tracts in Columbia county, New York

EC04: Mississippi Valley, Appalachian Zn (32b) (Late Paleozoic) , covers 0.2 % of this area: The number of undiscovered deposits in this tract was not estimated.
NA17: Sediment-hosted Au (26a) (Ordovician) , covers 39 % of this area: The number of undiscovered deposits in this tract was not estimated.
NA18: Sandstone-hosted Pb-Zn (30a) (Cambrian - Ordovician) , covers 1 % of this area: The number of undiscovered deposits in this tract was not estimated.