Dollaseite-(Ce) is a sorosilicate end-member epidote rare-earth mineral which was discovered by Per Geijer (1927) in the Ostanmossa mine (Östanmossa gruva), Norberg district, Sweden.

The mineral provisionally named "magnesium orthite" by Geijer himself[6] was renamed after structural refinement by Peacor and Dunn in 1988 led to its proper classification.

The name dollaseite-(Ce) was chosen in honor of Wayne Dollase, who performed broad research on epidote minerals.

[10] The atomic structure of dollaseite-(Ce) can be somewhat complex at times due to the charge-coupled substitution involving both cations and anions: (Fe,Al)3+ + O2− = Mg2+ + F−.

[9] Like the rest of the members of the epidote group, the aluminium octahedra in dollaseite-(Ce) share edges, forming endless chains.