AM_Franklinfurnaceite Formula: Ca2 Mn3.05 Mg.65 Zn2.3 (Fe.75 Al.25) Si2 O18 H8 Name: Franklinfurnaceite Unit cell: 5.483 9.39 14.51 90.0 97.04 90.0 , V=741.42 Space group: C121 (5)

Peacor D R , Rouse R C , Bailey S W , American Mineralogist , 73 (1988) p.876-887, Crystal structure of franklinfurnaceite: A tri-dioctahedral zincosilicate, intermediate between chlorite and mica