Berlinite_1 Formula: Al P O4 Name: Berlinite Unit cell: 4.949 4.949 10.955 90.0 90.0 120.0 , V=232.37 Space group: P3221 (154)
Muraoka Y , Kihara K , Physics and Chemistry of Minerals , 24 (1997) p.243-253, The temperature dependence of the crystal structure of berlinite,, a quartz-type form of AlPO4, Sample: T = 92 C