Allanite-(Ce) - Natural minerals and crystals

Allanite (also called orthite) is a group of sorosilicate minerals within the larger group of epidotes that contains a significant amount of rare earth elements. The mineral is mainly found in metamorphosed sediments rich in clay and felsic igneous raw rocks and minerals">rocks. The International Mineralogical Association lists four minerals in the allanite group, each recognized as a single mineral: allanite- (Ce), allanite- (La), allanite- (Nd), and allanite- (Y), depending on the dominant rare earth. . present: cerium, lanthanum, neodymium or yttrium.