COMPRESSION STUDIES OF FORSTERITE (Mg2SiO4) AND ENSTATITE(MgSiO3)

From hydrostatic, high-pressure, X-ray diffraction studies of forsterite, Mg2SiO4, and enstatite, MgSiO3, the following zero pressure isothermal bulk moduli and their pressure derivatives were determined. ρo Kto K′to forsterite 3.234 g/cm3 1.20 Mbar 5.6 enstatite 3.227 g/cm3 1.25 Mbar 5 (assumed) Full-size table Table options View in workspace Download as CSV The cell edge (linear) and volume compressions are compared with those calculated from elastic constants [Graham and Barsch, 1969; Frisillo and Barsh, 1972] and with shock compression data [Ahrens et al., 1971; Ahrens and Gaffney, 1971].