The collapse of American rare earth mining — and lessons .
May 23, 2019 · Ucore Rare Metals Inc. – 0.16 Diversified Metals and Mining. Ucore Rare Metals is headquartered in Halifax, Canada and explores for rare earth elements in Canada and the U.S. The Company holds of the land in the Bokan Mountain/ Dotson Ridge property located on Prince of Wales Island, Alaska.Rare earth elements have unique physicochemical properties that make them essential elements in many high-tech components. Bastnesite (La, Ce)FCO 3, monazite, (Ce, La, Y, Th)PO 4, and xenotime, YPO 4, are the main commercial sources of rare earths.Rare earth minerals are usually beneficiated by flotation or gravity or magnetic processes to produce concentrates that are subsequently leached .