The first of the rare earth minerals was discovered in 1794 by J. Gadolin and was named gadolinite from its discoverer.
The rare earth metals are found in the minerals gadolinite, samarskite, fergusonite, euxenite and cerite.
But Joanna Magnusson was one of the rare earth women who had come out with her husband, twenty years ago.
These crude earths, yttria and ceria, have supplied most if not all of the “rare earth” metals.
rare earth n.