Ultralow compressibility silicate without highly coordinated silicon.

The bulk modulus of scheelite-structured ZrSiO(4) is 301.4+/-12.5 GPa, as derived from static compression experiments to 52.

Earth's Core-Mantle Boundary: Results of Experiments at High Pressures and Temperatures.

Laboratory experiments document that liquid iron reacts chemically with silicates at high pressures (>/=2.4 x 10(10) Pascals) and temperatures. In particular, (Mg,Fe)SiO(3) perovskite, the most abundant mineral of Earth's lower mantle, is expected to react with liquid iron to produce metallic alloys (FeO and FeSi) and nonmetallic silicates (SiO(2) stishovite and MgSiO(3) perovskite) at the pressures of the core-mantle boundary, 14 x 10(10) Pascals.

Synthesis and Equation of State of (Mg,Fe) SiO3 Perovskite to Over 100 Gigapascals.

Silicate perovskite of composition (Mg(0.88)Fe(0.12)) SiO(3) has been synthesized in a laser-heated diamond-anvil cell to a pressure of 127 gigapascals at temperatures exceeding 2000 K.