AM_Coesite_20 Formula: Si O2 Name: Coesite Unit cell: 7.148 12.334 7.112 90.0 120.3 90.0 , V=541.36 Space group: P121/A1 (14)

Kirfe A , Will G , Arndt J , Zeitschrift fur Kristallographie , 149 (1979) p.315-326, A new phase of coesite SiO2, Note: this is a synthetic, twinned crystal of a typical coesite,, it is not really a new phase