Eosphorite forms prismatic, slender crystals and rosettes. Childrenite forms tabular or bladed individuals or lamellar aggregates. It has been said that the two different habits belie their solid solution relationship. Colors include dark yellow, yellow-brown and brown. Luster is vitreous.
Specimens are transparent to translucent.
Crystal Habits include equidimensional tabular, bladed or platy crystals. Aggregates include lamellar, parallel growth and fibrous habits. Cleavage is good in two directions at right angles. Fracture is conchoidal. Hardness is 4.5 - 5.