Fayalite Hazen R M American Mineralogist 62 (1977) 286-295 Effects of temperature and pressure on the crystal structure of ferromagnesian olivine T = 23 deg C, P = 31 kb Locality: synthetic _database_code_amcsd 0000568 4.802 10.260 6.070 90 90 90 Pbnm atom x y z Biso Fe1 0 0 0 .30 Fe2 .987 .284 .25 .50 Si .428 .092 .25 .00 O1 .771 .107 .25 -.8 O2 .237 .479 .25 -.8 O3 .314 .159 .040 -.3