Elasticity of ilmenites |
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Authors: | Robert C. Liebermann |
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Affiliation: | Research School of Earth Science, Australian National University, Canberra, A.C.T. Australia |
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Abstract: | Ultrasonic data for the velocities of the ilmenites MgTiO3 and CoTiO3 have been determined as a function of pressure to 7.5 kbar at room temperature for polycrystalline specimens hot-pressed in a piston-cylinder apparatus at pressures up to 30 kbar. Titanate and germanate ilmenites define divergent isostructural trends on a Birch diagram of bulk sound velocity (υφ) vs. density (ρ). On a υφ vs. mean atomic weight () diagram, however, all of the ilmenite consistent with a single . Elasticity systematics for isostructural sequences are used to e the bulk modulus (2.09 Mbar) and bulk sound velocity (7.4 km/sec) of MgSiO3-elmenite. |
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