AM_Quartz_6 Formula: Si O2 Name: Quartz Unit cell: 4.923 4.923 5.409 90.0 90.0 120.0 , V=113.53 Space group: P3221 (154)

Ikuta D , Kawame N , Banno S , Hirajima T , Ito K , Rakovan J F , Downs R T , Tamada O , American Mineralogist , 92 (2007) p.57-63, First in situ X-ray diffraction identification of coesite and retrograde quartz on a glass, thin section of an ultrahigh-pressure metamorphic rock and their crystal structure details, Locality: Yangkou meta-igneous complex in the middle part of the Sulu UHP terrain, eastern China, Note: Sample is on a thin section