Due to the rarity of the mineral and difficulties with the definition of the crystal structure, no progress was made. The mineral was subsequently found at Bayan Obo in 1980 and described.
Color is usually pale yellow.
Luster is greasy to vitreous. Crystal Habits include sharp hemimorphic crystals displaying trigonal pyramids and complex twinned aggregates. Fracture is conchoidal. Streak is white. Associated Minerals include albite, anatase, ancylite, chlorite group and pyrite.