AM_Yoderite_1 Formula: Si2 Al2.84 Mg Fe.16 O10 Name: Yoderite Unit cell: 8.027 5.805 7.252 90.0 104.9 90.0 , V=326.56 Space group: P121/M1 (11)

Higgins J B , Ribbe P H , Nakajima Y , American Mineralogist , 67 (1982) p.76-84, An ordering model for the commensurate antiphase structure of yoderite, Disordered after heating to 800 C, at T = 20 C, Note: the sample is from Mautia Hill, Tanzania