AM_Ilvaite_12 Formula: Ca.98 Mn.74 Fe2.28 Si2 O9 H Name: Ilvaite Unit cell: 13.014 8.867 5.838 90.0 90.0 90.0 , V=673.68 Space group: PNAM (62)

Bonazzi P , Bindi L , American Mineralogist , 87 (2002) p.845-852, Structural properties and heat-induced oxidation-dehydrogenation of, manganoan ilvaite from Perda Niedda mine, Sardinia, Italy, Sample: PN6-RT, Crystal at room temperature