IRON OXIDE-APATITE WASTE PILES AS UNCONVENTIONAL RARE EARTH ELEMENT RESOURCES IN THE EASTERN ADIRONDACK HIGHLANDS, NEW YORK

The iron oxide-apatite (IOA) deposits of the eastern Adirondack Highlands of New York represent high-grade magnetite ore that contains variable quantities of rare earth element (REE)-bearing apatite. These IOA deposits and their associated waste and/or tailings piles are renewed focus areas for potential domestic REE resources. Most of the deposits are hosted within Na-altered Lyon Mountain Granite Gneiss (LMG); however, some Fe deposits occur...