Euxenite (Y) - Beryl Pit, Quadeville, Ontario, Canada

(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)₂O₆

Euxenite from the Beryl Pit, located in Quadeville, Ontario, is a notable example of this rare and complex oxide mineral. Euxenite, a member of the euxenite-polycrase group, is characterized by its unique chemical formula, typically containing a mix of niobium, tantalum, titanium, and rare earth elements such as yttrium, erbium, and cerium. The mineral usually forms in pegmatites, where it occurs as dark brown to black, submetallic crystals or massive forms. At the Beryl Pit, euxenite is found in association with other rare minerals such as beryl, feldspar, quartz, and biotite, often embedded within the granitic host rock. The crystals are typically elongated and exhibit a resinous to metallic luster, reflecting their unique composition.

The euxenite from this locality is of particular interest to mineral collectors and geologists due to its composition and aesthetic appeal. Its high content of rare earth elements makes it a useful mineral for understanding the geochemical evolution of the pegmatitic environment at the Beryl Pit. Furthermore, the historical significance of the Beryl Pit, once a site of beryllium mining, adds an extra layer of intrigue to specimens collected from this area. Euxenite specimens are also radioactive due to their thorium and uranium content, requiring careful handling and storage. This characteristic, combined with their rarity and geological significance, makes euxenite from the Beryl Pit a fascinating subject of study and a prized addition to any mineral collection.

This specimen comes in at approx 700 cpm on a SE International Ranger EXP.

Approx. size: 90mm x 70mm x 60mm