Home SINGLE-CRYSTAL X-RAY-DIFFRACTION STUDY OF MGSIO3 PEROVSKITE FROM 77-K TO 400-K SINGLE-CRYSTAL X-RAY-DIFFRACTION STUDY OF MGSIO3 PEROVSKITE FROM 77-K TO 400-K ROSS, NL; HAZEN, RM 1989 PHYSICS AND CHEMISTRY OF MINERALS