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Elasticity of six polycrystalline silicate garnets at pressure up to 3.0 GPa
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Zichao Wang
Veröffentlicht/Copyright:
26. März 2015
Abstract
The elasticities of six polycrystalline silicate garnets (almandine, grossular, pyrope, uvarovite, andradite, and Prp25Alm56Spe19) have been experimentally studied at pressures up to 3.0 GPa using a phase comparison method with an ultrasonic interferometer in a liquid cell piston-cylinder apparatus. Complete elasticity data sets (P- and S-wave velocities, bulk moduli Ks, shear moduli G, and their first pressure derivatives KS′ and G′) have been obtained for all six garnets, and are used together with an up-to-date compilation of garnet elasticity data to examine composition-elasticity systematics of garnets. Our results suggest that pyralspite and ugrandite have different relationships between bulk sound velocity (Vφ) and mean atomic weight (M̅0), between Poisson’s ratio (σ) and density (ρ), and between G/Ks and KS/ρ ratios. A large error may occur when the systematics are applied across different garnet groups.
Received: 2000-4-17
Accepted: 2001-6-7
Published Online: 2015-3-26
Published in Print: 2001-10-1
© 2015 by Walter de Gruyter Berlin/Boston
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Artikel in diesem Heft
- Recalibration of the GASP geobarometer in light of recent garnet and plagioclase activity models and versions of the garnet-biotite geothermometer
- Compositional zoning and element partitioning in nickeloan tourmaline from a metamorphosed karstbauxite from Samos, Greece
- Occurrence of apatite associated with magnetite in an ophiolite complex (Othrys), Greece
- Overpressures induced by coesite-quartz transition in zircon
- Geochemical modeling of bacterially induced mineralization of schwertmannite and jarosite in sulfuric acid spring water
- H2O-D2O exchange in lawsonite
- Composition and temperature dependence of cation ordering in Ni-Mg olivine solid solutions: a time-of-flight neutron powder diffraction and EXAFS study
- Thermal conductivity of spinels and olivines from vibrational spectroscopy: Ambient conditions
- Elasticity of six polycrystalline silicate garnets at pressure up to 3.0 GPa
- The crystal chemistry of birefringent natural uvarovites: Part I. Optical investigations and UV-VIS-IR absorption spectroscopy
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- Ferroanthophyllite in Rockport grunerite: A transmission electron microscopy study
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- Raman spectroscopic studies of phase E to 19 GPa
- The crystal structures of the low-temperature phases of leonite-type compounds, K2Me(SO4)2·4H2O (Me2+ = Mg, Mn, Fe)
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