Citation: Ikuta, D.; Kawame, N.; Banno, S.; Hirajima, T.; Ito, K.; Rakovan, J. F.; Downs, R. T.; Tamada, O. (2007). 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: Oomine granite, Tenkawa-mura, Nara, Southwest Japan Sample: in air. American Mineralogist, 92, pp. 57-63.