Citation: Gabe, E. J.; Portheine, J. C.; Whitlow, S. H. (1973). A reinvestigation of the epidote structure: Confirmation of the iron location sample HEP. American Mineralogist, 58, pp. 218-223.
Formula: Al2.16 Ca2 Fe0.84 H O13 Si3
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al6 Fe2 H2 O26 Si6 (Al3 Fe H O13 Si3)
Multiplicity: 1