udanej
Udanej is a rare and unique mineral discovered in the late 20th century. It is named after the Udachnaya mine in Siberia, Russia, where it was first found. Udanej is a complex oxide mineral with the chemical formula (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6. It is typically found in granitic pegmatites and is associated with other rare minerals such as fersmite and samarskite.
Udanej is characterized by its distinctive yellow to brown color and its high density, which is around
Due to its rarity and unique composition, udanej is of significant interest to mineralogists and collectors.
In summary, udanej is a rare and distinctive mineral with a complex composition and radioactive properties.