AM_Chayesite Formula: K.9 Na.2 (Mg4.15 Fe.85) Si12 O30 Name: Chayesite Unit cell: 10.118 10.118 14.3 90.0 90.0 120.0 , V=1267.82 Space group: P6/MCC (192)

Alietti E , Brigatti M F , Capedri S , Poppi L , Mineralogical Magazine , 58 (1994) p.655-662, The roedderite-chayesite series from Spanish lamproites:, crystal chemical characterization, Locality: Cancarix, Albacete province, Spain