Xenotime

Xenotime is a rare-earths phosphate mineral named after the Greek words κενός vain and τιμή honor, akin to “vainglory” for the mistaken discovery of a new element with this mineral that turned out to just be Yttrium. First described in 1824 in Norway, Xenotime can be found all over the world near pegmatites and igneous rocks. Other than heavy monazite sands, this is the primary ore for Erbium and many other REEs