Allanite-(Ce) — Eagle Nest Occurrence, Bancroft, Ontario, Canada

Allanite-(Ce). Eagle Nest Occurrence, Bancroft area, Hastings County, Ontario, Canada. Grenville Province. Allanite-(Ce) from the Eagle Nest Occurrence, a named radioactive mineral locality within the Bancroft collector district of the Central Metasedimentary Belt, Grenville Province. The Eagle Nest occurrence is characteristic of the numerous small, mineral-rich pegmatitic and metamorphic localities distributed through this extraordinary terrain — sites that have yielded generations of collectible material to hobbyists and scientific researchers alike. This specimen shows allanite-(Ce) in its typical guise: a dense, black, submetallic to resinous mass of the epidote-group sorosilicate, carrying cerium and other light rare earth elements in significant concentration alongside calcium, iron, and aluminium in a complex silicate framework. The Bancroft specimens of allanite are particularly prized among REE mineral collectors for their strong provenance documentation — many localities in this district have been mapped, sampled, and described in the scientific literature going back to the late 19th century, giving specimens genuine geological context that enhances their value both scientifically and as collectibles.